cmd/compile: For some sizes, zeroing memory through OpZero could be faster (AMD64) #56997
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gopherbot
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compiler/runtime
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Change https://go.dev/cl/454255 mentions this issue: |
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The problem I see here is that sometimes Maybe though this problem only applies to |
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I think it’s best solved by improving the DUFFZERO implementation. If you look at the benchmark it seems the problem areas are all under the DUFFZERO range. We know the size of the clear, thus we can skip the initial branching in memclrNoHeapPointers. The trick is to teach DUFFZERO checking for AVX support and figuring out whether the increased code size (would it increase?) pays off. We could also elide the check on higher arch levels. |
toothrot
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NeedsDecision
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On ppc64le, we have an instruction to clear blocks of 128 which is used in the memclr function and is more efficient than doing it this way. It sounds like these cases were recognized because it is mentioned in this issue as well as the commit message of the CL, but not addressed? |
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@laboger is it possible to use that instruction in ppc64’s Zero implementation? Perhaps we can skip inlining for ppc64 if it’s a problem. Maybe you could checkout this change and try running memory clearing benchmarks to see how it impacts performance. Thanks. |
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@jake-volvo Not really because there are different conditions to verify before you can use that instruction, such as alignment of the target, which makes the code more complicated. It is better to do that within the memclr assembler function. Why don't you do this the same way as the runtime.memmove generic rules, which use the function isInlinableMemmove to determine when it should be done and returns the condition depending on the target? You could define a similar function isInlinableMemclr. Here is the comparison with your change: |
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Thanks, I'll gate the inlining so it only happens for AMD64 and ARM64 for now. |
gopherbot
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Jan 31, 2023
This patch rewrites known-size calls to memclrNoHeapPointers with an OpZero.
This significantly improves performance and lets some clears get DSE'd.
One of the cases where this applies is zeroing a known-size array, example:
var x [256]int8
...
for a := range x {
x[a] = 0
}
Other cases can be found in the runtime itself where memclrNoHeapPointers is sometimes directly invoked with a constant.
It seems that for some sized-clears on some architectures (AMD64, maybe others) the memcrlNoHeapPointers is more performant than OpZero.
See the issue #56997 for more details.
Benches ARM (M1 Pro):
name old time/op new time/op delta
MemclrKnownSize1-10 2.03ns ± 0% 0.31ns ± 0% -84.69% (p=0.000 n=18+19)
MemclrKnownSize2-10 1.97ns ± 0% 0.31ns ± 0% -84.19% (p=0.000 n=12+19)
MemclrKnownSize4-10 2.02ns ± 0% 0.31ns ± 0% -84.56% (p=0.000 n=12+20)
MemclrKnownSize8-10 2.02ns ± 0% 0.31ns ± 0% -84.59% (p=0.000 n=14+19)
MemclrKnownSize16-10 2.15ns ± 0% 0.31ns ± 0% -85.50% (p=0.000 n=18+19)
MemclrKnownSize32-10 2.48ns ± 0% 0.31ns ± 0% -87.48% (p=0.000 n=20+19)
MemclrKnownSize64-10 1.93ns ± 0% 0.62ns ± 0% -67.88% (p=0.000 n=20+19)
MemclrKnownSize112-10 2.48ns ± 0% 1.80ns ± 0% -27.74% (p=0.000 n=19+20)
MemclrKnownSize128-10 10.0ns ±112% 2.0ns ± 0% -79.76% (p=0.000 n=18+17)
MemclrKnownSize192-10 27.4ns ±103% 2.6ns ± 0% -90.38% (p=0.000 n=16+19)
MemclrKnownSize248-10 9.67ns ±43% 3.26ns ± 0% -66.29% (p=0.000 n=19+19)
MemclrKnownSize256-10 85.4ns ±148% 3.3ns ± 0% -96.18% (p=0.000 n=20+20)
MemclrKnownSize512-10 223ns ±54% 6ns ± 0% -97.42% (p=0.000 n=18+20)
MemclrKnownSize1024-10 216ns ±26% 11ns ± 0% -95.00% (p=0.000 n=18+15)
MemclrKnownSize4096-10 265ns ± 2% 88ns ± 0% -66.84% (p=0.000 n=19+17)
MemclrKnownSize512KiB-10 9.91µs ± 1% 10.23µs ± 2% +3.14% (p=0.000 n=19+19)
[Geo mean] 15.6ns 2.5ns -83.62%
name old speed new speed delta
MemclrKnownSize1-10 493MB/s ± 0% 3216MB/s ± 0% +553.04% (p=0.000 n=18+19)
MemclrKnownSize2-10 1.02GB/s ± 0% 6.43GB/s ± 0% +532.33% (p=0.000 n=16+19)
MemclrKnownSize4-10 1.99GB/s ± 0% 12.86GB/s ± 0% +547.67% (p=0.000 n=18+20)
MemclrKnownSize8-10 3.96GB/s ± 0% 25.72GB/s ± 0% +548.81% (p=0.000 n=19+19)
MemclrKnownSize16-10 7.46GB/s ± 0% 51.43GB/s ± 0% +589.72% (p=0.000 n=20+19)
MemclrKnownSize32-10 12.9GB/s ± 0% 102.9GB/s ± 0% +698.60% (p=0.000 n=20+18)
MemclrKnownSize64-10 33.1GB/s ± 0% 103.0GB/s ± 0% +211.34% (p=0.000 n=19+19)
MemclrKnownSize112-10 45.1GB/s ± 0% 62.4GB/s ± 0% +38.38% (p=0.000 n=19+20)
MemclrKnownSize128-10 13.3GB/s ±107% 63.5GB/s ± 0% +378.03% (p=0.000 n=19+18)
MemclrKnownSize192-10 6.97GB/s ±139% 72.72GB/s ± 0% +943.44% (p=0.000 n=19+19)
MemclrKnownSize248-10 25.9GB/s ±46% 76.1GB/s ± 0% +194.16% (p=0.000 n=20+17)
MemclrKnownSize256-10 8.64GB/s ±196% 78.51GB/s ± 0% +808.19% (p=0.000 n=20+20)
MemclrKnownSize512-10 2.33GB/s ±86% 89.13GB/s ± 0% +3719.50% (p=0.000 n=17+20)
MemclrKnownSize1024-10 4.85GB/s ±32% 94.93GB/s ± 0% +1856.74% (p=0.000 n=18+19)
MemclrKnownSize4096-10 15.4GB/s ± 2% 46.6GB/s ± 0% +201.55% (p=0.000 n=19+18)
MemclrKnownSize512KiB-10 52.9GB/s ± 1% 51.3GB/s ± 2% -3.04% (p=0.000 n=19+19)
[Geo mean] 7.54GB/s 42.86GB/s +468.76%
Intel Alder Lake 12600k:
name old time/op new time/op delta
MemclrKnownSize1-16 0.59ns ± 3% 0.38ns ± 6% -36.00% (p=0.000 n=19+18)
MemclrKnownSize2-16 0.57ns ± 1% 0.19ns ± 5% -66.27% (p=0.000 n=19+19)
MemclrKnownSize4-16 0.66ns ± 2% 0.36ns ±21% -45.12% (p=0.000 n=19+20)
MemclrKnownSize8-16 0.74ns ± 1% 0.30ns ±26% -59.81% (p=0.000 n=18+20)
MemclrKnownSize16-16 1.00ns ± 7% 0.21ns ± 8% -79.51% (p=0.000 n=20+19)
MemclrKnownSize32-16 0.95ns ± 1% 0.40ns ± 1% -57.61% (p=0.000 n=20+18)
MemclrKnownSize64-16 1.20ns ± 2% 0.41ns ± 0% -65.82% (p=0.000 n=20+18)
MemclrKnownSize112-16 1.27ns ± 2% 1.03ns ± 0% -19.35% (p=0.000 n=20+18)
MemclrKnownSize128-16 1.34ns ± 2% 1.03ns ± 0% -23.02% (p=0.000 n=20+20)
MemclrKnownSize192-16 1.92ns ± 2% 1.44ns ± 0% -24.89% (p=0.000 n=20+16)
MemclrKnownSize248-16 2.77ns ± 1% 3.29ns ± 0% +18.81% (p=0.000 n=20+16)
MemclrKnownSize256-16 1.92ns ± 1% 1.86ns ± 0% -3.49% (p=0.000 n=19+15)
MemclrKnownSize512-16 2.81ns ± 2% 3.49ns ± 0% +24.15% (p=0.000 n=20+17)
MemclrKnownSize1024-16 4.02ns ± 1% 6.78ns ± 0% +68.44% (p=0.000 n=20+18)
MemclrKnownSize4096-16 17.2ns ± 2% 14.4ns ± 0% -16.73% (p=0.000 n=20+17)
MemclrKnownSize512KiB-16 6.71µs ± 1% 6.52µs ± 0% -2.85% (p=0.000 n=20+18)
[Geo mean] 2.60ns 1.71ns -34.06%
name old speed new speed delta
MemclrKnownSize1-16 1.71GB/s ± 3% 2.67GB/s ± 6% +56.39% (p=0.000 n=19+18)
MemclrKnownSize2-16 3.52GB/s ± 2% 10.43GB/s ± 6% +196.04% (p=0.000 n=20+20)
MemclrKnownSize4-16 6.06GB/s ± 1% 10.83GB/s ±11% +78.63% (p=0.000 n=19+18)
MemclrKnownSize8-16 10.7GB/s ± 1% 27.0GB/s ±21% +151.49% (p=0.000 n=18+20)
MemclrKnownSize16-16 16.0GB/s ± 8% 78.1GB/s ± 7% +387.24% (p=0.000 n=20+19)
MemclrKnownSize32-16 33.6GB/s ± 1% 79.4GB/s ± 1% +135.89% (p=0.000 n=20+18)
MemclrKnownSize64-16 53.3GB/s ± 2% 155.9GB/s ± 0% +192.58% (p=0.000 n=20+18)
MemclrKnownSize112-16 88.0GB/s ± 2% 109.1GB/s ± 0% +23.97% (p=0.000 n=20+18)
MemclrKnownSize128-16 95.3GB/s ± 2% 123.8GB/s ± 0% +29.88% (p=0.000 n=20+20)
MemclrKnownSize192-16 100GB/s ± 2% 133GB/s ± 0% +33.12% (p=0.000 n=20+17)
MemclrKnownSize248-16 89.7GB/s ± 1% 75.5GB/s ± 0% -15.84% (p=0.000 n=20+19)
MemclrKnownSize256-16 133GB/s ± 1% 138GB/s ± 0% +3.61% (p=0.000 n=19+14)
MemclrKnownSize512-16 182GB/s ± 2% 147GB/s ± 0% -19.46% (p=0.000 n=20+17)
MemclrKnownSize1024-16 254GB/s ± 1% 151GB/s ± 0% -40.64% (p=0.000 n=20+18)
MemclrKnownSize4096-16 237GB/s ± 2% 285GB/s ± 0% +20.09% (p=0.000 n=20+17)
MemclrKnownSize512KiB-16 78.2GB/s ± 1% 80.4GB/s ± 0% +2.93% (p=0.000 n=20+18)
[Geo mean] 42.1GB/s 63.8GB/s +51.53%
compilecmp linux/amd64:
runtime
runtime.(*pallocData).allocAll 85 -> 45 (-47.06%)
runtime.(*pageAlloc).allocRange 942 -> 923 (-2.02%)
runtime.(*pageAlloc).free 798 -> 774 (-3.01%)
runtime.(*pageBits).clearAll 66 -> 20 (-69.70%)
runtime.startCheckmarks 255 -> 246 (-3.53%)
runtime.(*pallocData).freeAll 86 -> 46 (-46.51%)
runtime.(*pallocBits).freeAll 66 -> 20 (-69.70%)
runtime.(*consistentHeapStats).unsafeClear 66 -> 19 (-71.21%)
runtime.newproc1 965 -> 933 (-3.32%)
crypto/rc4
crypto/rc4.(*Cipher).Reset 78 -> 69 (-11.54%)
compress/bzip2
compress/bzip2.(*reader).readBlock 2973 -> 2941 (-1.08%)
image/jpeg
image/jpeg.(*decoder).processDHT 1179 -> 1166 (-1.10%)
index/suffixarray
index/suffixarray.bucketMax_8_32 394 -> 241 (-38.83%)
index/suffixarray.freq_8_32 317 -> 185 (-41.64%)
index/suffixarray.freq_8_64 317 -> 178 (-43.85%)
index/suffixarray.bucketMin_8_32 394 -> 243 (-38.32%)
index/suffixarray.bucketMin_8_64 398 -> 234 (-41.21%)
index/suffixarray.bucketMax_8_64 398 -> 234 (-41.21%)
compress/flate
compress/flate.(*huffmanBitWriter).generateCodegen 965 -> 838 (-13.16%)
compress/flate.(*compressor).reset 429 -> 409 (-4.66%)
cmd/vendor/golang.org/x/sys/unix
cmd/vendor/golang.org/x/sys/unix.(*FdSet).Zero 66 -> 60 (-9.09%)
cmd/vendor/golang.org/x/sys/unix.(*Ifreq).SetInet4Addr 211 -> 129 (-38.86%)
cmd/vendor/golang.org/x/sys/unix.(*Ifreq).SetUint32 98 -> 14 (-85.71%)
cmd/vendor/golang.org/x/sys/unix.(*Ifreq).clear 66 -> 11 (-83.33%)
cmd/vendor/golang.org/x/sys/unix.(*Ifreq).SetUint16 101 -> 15 (-85.15%)
cmd/vendor/golang.org/x/sys/unix.(*CPUSet).Zero 66 -> 60 (-9.09%)
internal/coverage/decodemeta
internal/coverage/decodemeta.(*CoverageMetaFileReader).rdUint64 325 -> 293 (-9.85%)
crypto/tls
crypto/tls.(*halfConn).setTrafficSecret 253 -> 247 (-2.37%)
crypto/tls.(*Conn).readRecordOrCCS 10315 -> 10283 (-0.31%)
crypto/tls.(*halfConn).changeCipherSpec 271 -> 261 (-3.69%)
crypto/tls.(*Conn).writeRecordLocked 1765 -> 1748 (-0.96%)
file before after Δ %
runtime.s 512467 512164 -303 -0.059%
crypto/rc4.s 955 946 -9 -0.942%
compress/bzip2.s 9586 9554 -32 -0.334%
image/jpeg.s 32122 32109 -13 -0.040%
index/suffixarray.s 38547 37644 -903 -2.343%
compress/flate.s 46668 46521 -147 -0.315%
cmd/vendor/golang.org/x/sys/unix.s 118620 118301 -319 -0.269%
internal/coverage/decodemeta.s 7224 7192 -32 -0.443%
crypto/tls.s 288762 288697 -65 -0.023%
cmd/compile/internal/ssa.s 3639799 3640727 +928 +0.025%
total 20790248 20789353 -895 -0.004%
src/runtime benchmarks (Linux Alder Lake 12600k):
name old time/op new time/op delta
MakeChan/Byte-16 26.2ns ± 2% 25.6ns ± 3% -2.05% (p=0.003 n=9+10)
MakeChan/Int-16 33.9ns ± 2% 33.3ns ± 4% -1.99% (p=0.015 n=10+10)
MakeChan/Ptr-16 54.2ns ± 2% 53.7ns ± 1% -0.90% (p=0.016 n=10+9)
MakeChan/Struct/0-16 23.8ns ± 3% 23.4ns ± 1% -1.72% (p=0.009 n=10+8)
MakeChan/Struct/32-16 55.9ns ± 2% 53.9ns ± 1% -3.48% (p=0.000 n=10+10)
MakeChan/Struct/40-16 63.5ns ± 1% 61.1ns ± 2% -3.79% (p=0.000 n=10+9)
ChanNonblocking-16 0.22ns ± 0% 0.22ns ± 0% +0.40% (p=0.011 n=9+8)
SelectUncontended-16 4.63ns ± 1% 4.62ns ± 0% -0.35% (p=0.001 n=10+8)
SelectSyncContended-16 1.58µs ± 2% 1.59µs ± 1% ~ (p=0.540 n=10+10)
SelectAsyncContended-16 290ns ± 0% 291ns ± 0% +0.14% (p=0.012 n=8+9)
SelectNonblock-16 0.95ns ± 1% 0.95ns ± 1% ~ (p=0.546 n=9+9)
ChanUncontended-16 239ns ± 3% 242ns ± 6% ~ (p=0.886 n=9+10)
ChanContended-16 17.7µs ± 1% 18.2µs ± 1% +2.87% (p=0.000 n=10+9)
ChanSync-16 109ns ± 2% 109ns ± 1% ~ (p=0.342 n=10+10)
ChanSyncWork-16 6.55µs ± 1% 6.53µs ± 1% ~ (p=0.101 n=10+10)
ChanProdCons0-16 502ns ± 1% 499ns ± 0% -0.55% (p=0.001 n=10+9)
ChanProdCons10-16 373ns ± 2% 377ns ± 1% ~ (p=0.095 n=10+9)
ChanProdCons100-16 224ns ± 2% 223ns ± 3% ~ (p=0.150 n=9+10)
ChanProdConsWork0-16 491ns ± 1% 484ns ± 0% -1.26% (p=0.000 n=10+9)
ChanProdConsWork10-16 451ns ± 2% 448ns ± 2% ~ (p=0.210 n=8+10)
ChanProdConsWork100-16 406ns ± 0% 407ns ± 1% ~ (p=0.138 n=8+8)
SelectProdCons-16 509ns ± 0% 509ns ± 0% ~ (p=0.917 n=9+9)
ReceiveDataFromClosedChan-16 12.1ns ± 0% 12.1ns ± 0% ~ (p=0.780 n=10+10)
ChanCreation-16 22.6ns ± 1% 22.4ns ± 0% -0.72% (p=0.001 n=10+8)
ChanSem-16 165ns ± 1% 166ns ± 1% +0.72% (p=0.002 n=10+10)
ChanPopular-16 500µs ± 2% 498µs ± 1% ~ (p=0.218 n=10+10)
ChanClosed-16 0.29ns ± 0% 0.29ns ± 0% +0.09% (p=0.019 n=9+8)
CallClosure-16 1.28ns ± 0% 1.27ns ± 0% -0.51% (p=0.000 n=9+9)
CallClosure1-16 1.50ns ± 0% 1.50ns ± 0% ~ (p=0.123 n=9+9)
CallClosure2-16 8.86ns ± 1% 8.86ns ± 3% ~ (p=0.590 n=9+10)
CallClosure3-16 8.75ns ± 2% 8.69ns ± 2% ~ (p=0.247 n=10+10)
CallClosure4-16 8.65ns ± 2% 8.56ns ± 2% ~ (p=0.105 n=10+10)
Complex128DivNormal-16 2.47ns ± 0% 2.47ns ± 0% ~ (p=0.790 n=10+9)
Complex128DivNisNaN-16 4.44ns ± 0% 4.43ns ± 0% ~ (p=0.564 n=10+10)
Complex128DivDisNaN-16 4.48ns ± 0% 4.48ns ± 0% ~ (p=0.101 n=10+10)
Complex128DivNisInf-16 2.58ns ± 0% 2.58ns ± 0% ~ (p=0.808 n=10+10)
Complex128DivDisInf-16 6.30ns ± 0% 6.31ns ± 0% ~ (p=0.305 n=10+10)
SetTypePtr-16 0.73ns ± 1% 0.73ns ± 3% ~ (p=0.644 n=10+10)
SetTypePtr8-16 4.12ns ± 0% 4.12ns ± 0% ~ (p=0.127 n=10+10)
SetTypePtr16-16 4.13ns ± 1% 4.12ns ± 0% ~ (p=0.109 n=10+10)
SetTypePtr32-16 4.12ns ± 0% 4.12ns ± 0% ~ (p=0.203 n=9+10)
SetTypePtr64-16 4.12ns ± 0% 4.12ns ± 0% ~ (p=0.696 n=10+10)
SetTypePtr126-16 6.91ns ± 0% 6.91ns ± 0% ~ (p=0.469 n=10+10)
SetTypePtr128-16 6.66ns ± 0% 6.67ns ± 0% ~ (p=0.246 n=9+10)
SetTypePtrSlice-16 54.1ns ± 1% 54.1ns ± 1% ~ (p=0.509 n=9+10)
SetTypeNode1-16 4.13ns ± 1% 4.12ns ± 0% ~ (p=0.342 n=10+10)
SetTypeNode1Slice-16 10.1ns ± 1% 10.0ns ± 1% -1.18% (p=0.000 n=10+10)
SetTypeNode8-16 4.12ns ± 0% 4.12ns ± 0% ~ (p=0.137 n=8+8)
SetTypeNode8Slice-16 22.6ns ± 0% 22.6ns ± 0% ~ (p=0.423 n=10+10)
SetTypeNode64-16 6.90ns ± 0% 6.91ns ± 0% ~ (p=0.275 n=10+10)
SetTypeNode64Slice-16 173ns ± 0% 173ns ± 0% ~ (p=0.610 n=9+10)
SetTypeNode64Dead-16 5.53ns ± 0% 5.52ns ± 0% ~ (p=0.123 n=10+6)
SetTypeNode64DeadSlice-16 150ns ± 0% 150ns ± 0% ~ (p=0.398 n=10+10)
SetTypeNode124-16 6.90ns ± 0% 6.90ns ± 0% ~ (p=0.779 n=10+10)
SetTypeNode124Slice-16 222ns ± 5% 217ns ± 0% ~ (p=0.302 n=10+10)
SetTypeNode126-16 6.66ns ± 0% 6.66ns ± 0% ~ (p=0.324 n=10+9)
SetTypeNode126Slice-16 218ns ± 0% 218ns ± 0% ~ (p=0.119 n=9+10)
SetTypeNode128-16 9.76ns ± 0% 9.73ns ± 0% -0.31% (p=0.003 n=9+10)
SetTypeNode128Slice-16 279ns ± 0% 278ns ± 0% ~ (p=0.112 n=10+9)
SetTypeNode130-16 9.77ns ± 0% 9.73ns ± 0% -0.33% (p=0.002 n=10+10)
SetTypeNode130Slice-16 284ns ± 0% 284ns ± 0% ~ (p=0.668 n=10+10)
SetTypeNode1024-16 51.2ns ± 0% 51.6ns ± 1% ~ (p=0.080 n=9+9)
SetTypeNode1024Slice-16 1.83µs ± 0% 1.82µs ± 0% ~ (p=0.115 n=10+10)
Allocation-16 4.64µs ± 1% 4.37µs ± 1% -5.69% (p=0.000 n=9+9)
ReadMemStats-16 5.62µs ± 2% 5.55µs ± 5% -1.36% (p=0.050 n=10+10)
WriteBarrier-16 4.95ns ± 3% 4.99ns ± 3% ~ (p=0.255 n=10+10)
BulkWriteBarrier-16 1.69ns ± 2% 1.63ns ± 4% -3.77% (p=0.001 n=10+10)
ScanStackNoLocals-16 12.8ms ± 2% 12.9ms ± 1% +0.72% (p=0.019 n=10+10)
MSpanCountAlloc/bits=64-16 1.65ns ± 0% 1.65ns ± 0% ~ (p=0.124 n=10+10)
MSpanCountAlloc/bits=128-16 2.08ns ± 1% 2.06ns ± 1% -0.87% (p=0.000 n=10+10)
MSpanCountAlloc/bits=256-16 2.71ns ± 1% 2.69ns ± 1% -0.74% (p=0.001 n=10+9)
MSpanCountAlloc/bits=512-16 4.15ns ± 0% 4.23ns ± 2% +2.15% (p=0.000 n=10+10)
MSpanCountAlloc/bits=1024-16 7.89ns ± 1% 7.89ns ± 1% ~ (p=0.867 n=10+10)
Hash5-16 1.93ns ± 1% 2.01ns ± 0% +3.99% (p=0.000 n=10+8)
Hash16-16 2.04ns ± 1% 2.21ns ± 1% +8.61% (p=0.000 n=10+10)
Hash64-16 2.67ns ± 0% 2.67ns ± 0% ~ (p=0.154 n=9+9)
Hash1024-16 16.4ns ± 0% 16.4ns ± 0% +0.17% (p=0.020 n=9+10)
Hash65536-16 886ns ± 0% 885ns ± 0% ~ (p=0.725 n=10+10)
AlignedLoad-16 0.96ns ± 2% 0.95ns ± 3% ~ (p=0.123 n=10+10)
UnalignedLoad-16 0.95ns ± 2% 1.01ns ± 2% +6.31% (p=0.000 n=10+10)
EqEfaceConcrete-16 0.31ns ± 3% 0.33ns ± 5% +8.10% (p=0.000 n=10+10)
EqIfaceConcrete-16 0.31ns ±13% 0.28ns ± 2% -9.23% (p=0.001 n=10+10)
NeEfaceConcrete-16 0.29ns ± 1% 0.31ns ± 7% +5.59% (p=0.010 n=8+8)
NeIfaceConcrete-16 0.28ns ± 2% 0.29ns ± 1% +4.49% (p=0.000 n=9+8)
ConvT2EByteSized/bool-16 0.53ns ± 1% 0.52ns ± 1% -2.18% (p=0.000 n=10+10)
ConvT2EByteSized/uint8-16 0.53ns ± 1% 0.53ns ± 0% +1.22% (p=0.000 n=10+10)
ConvT2ESmall-16 1.13ns ± 0% 1.13ns ± 0% ~ (p=0.774 n=9+9)
ConvT2EUintptr-16 1.03ns ± 0% 1.04ns ± 0% +0.50% (p=0.000 n=10+8)
ConvT2ELarge-16 14.4ns ± 2% 14.4ns ± 1% ~ (p=0.726 n=10+10)
ConvT2ISmall-16 1.13ns ± 0% 1.13ns ± 0% ~ (p=0.693 n=9+10)
ConvT2IUintptr-16 1.03ns ± 0% 1.03ns ± 0% +0.44% (p=0.000 n=10+10)
ConvT2ILarge-16 14.2ns ± 1% 14.4ns ± 1% +0.85% (p=0.007 n=9+10)
ConvI2E-16 0.54ns ± 1% 0.54ns ± 0% -0.39% (p=0.037 n=10+8)
ConvI2I-16 2.68ns ± 0% 2.70ns ± 1% +0.73% (p=0.000 n=9+10)
AssertE2T-16 0.28ns ± 1% 0.39ns ± 5% +37.38% (p=0.000 n=10+10)
AssertE2TLarge-16 0.42ns ± 2% 0.48ns ± 1% +14.92% (p=0.000 n=9+10)
AssertE2I-16 2.67ns ± 0% 2.67ns ± 0% ~ (p=0.352 n=9+9)
AssertI2T-16 0.37ns ± 3% 0.34ns ± 1% -6.16% (p=0.000 n=10+10)
AssertI2I-16 2.67ns ± 0% 2.67ns ± 0% ~ (p=0.286 n=10+10)
AssertI2E-16 0.54ns ± 1% 0.54ns ± 0% -0.94% (p=0.000 n=10+10)
AssertE2E-16 0.41ns ± 0% 0.41ns ± 1% ~ (p=0.880 n=9+9)
AssertE2T2-16 0.41ns ± 1% 0.41ns ± 1% ~ (p=0.725 n=10+10)
AssertE2T2Blank-16 0.24ns ± 5% 0.21ns ± 1% -14.79% (p=0.000 n=10+9)
AssertI2E2-16 0.69ns ± 0% 0.69ns ± 1% ~ (p=0.541 n=10+10)
AssertI2E2Blank-16 0.26ns ± 9% 0.21ns ± 1% -18.86% (p=0.000 n=10+9)
AssertE2E2-16 0.53ns ± 1% 0.53ns ± 1% +0.72% (p=0.004 n=10+10)
AssertE2E2Blank-16 0.23ns ± 4% 0.21ns ± 1% -8.42% (p=0.000 n=10+10)
ConvT2Ezero/zero/16-16 1.13ns ± 0% 1.14ns ± 1% ~ (p=0.583 n=9+10)
ConvT2Ezero/zero/32-16 1.13ns ± 0% 1.13ns ± 0% ~ (p=0.417 n=10+10)
ConvT2Ezero/zero/64-16 1.03ns ± 1% 1.03ns ± 0% ~ (p=0.051 n=10+10)
ConvT2Ezero/zero/str-16 1.03ns ± 0% 1.03ns ± 0% ~ (p=0.132 n=10+10)
ConvT2Ezero/zero/slice-16 1.14ns ± 0% 1.15ns ± 0% +0.49% (p=0.001 n=10+10)
ConvT2Ezero/zero/big-16 123ns ± 1% 123ns ± 1% ~ (p=0.171 n=10+10)
ConvT2Ezero/nonzero/str-16 19.4ns ± 1% 19.3ns ± 3% ~ (p=0.548 n=9+10)
ConvT2Ezero/nonzero/slice-16 22.2ns ± 2% 22.0ns ± 2% ~ (p=0.109 n=10+10)
ConvT2Ezero/nonzero/big-16 123ns ± 1% 123ns ± 1% ~ (p=0.446 n=10+8)
ConvT2Ezero/smallint/16-16 1.13ns ± 0% 1.14ns ± 1% ~ (p=0.362 n=10+10)
ConvT2Ezero/smallint/32-16 1.13ns ± 0% 1.13ns ± 0% ~ (p=0.907 n=10+9)
ConvT2Ezero/smallint/64-16 1.04ns ± 0% 1.03ns ± 0% -0.38% (p=0.002 n=10+10)
ConvT2Ezero/largeint/16-16 6.65ns ± 1% 6.65ns ± 2% ~ (p=0.618 n=10+9)
ConvT2Ezero/largeint/32-16 6.75ns ± 3% 6.63ns ± 2% -1.77% (p=0.015 n=10+10)
ConvT2Ezero/largeint/64-16 9.19ns ± 1% 9.26ns ± 2% ~ (p=0.123 n=10+10)
Malloc8-16 8.66ns ± 1% 8.89ns ± 2% +2.74% (p=0.000 n=10+10)
Malloc16-16 13.7ns ± 1% 13.8ns ± 1% +0.71% (p=0.022 n=10+8)
MallocTypeInfo8-16 11.7ns ± 3% 11.6ns ± 2% ~ (p=0.469 n=10+10)
MallocTypeInfo16-16 18.3ns ± 1% 18.2ns ± 2% ~ (p=0.251 n=9+10)
MallocLargeStruct-16 195ns ± 1% 198ns ± 1% +1.65% (p=0.000 n=9+10)
GoroutineSelect-16 1.10ms ± 1% 1.12ms ± 1% +1.36% (p=0.000 n=10+8)
GoroutineBlocking-16 986µs ± 1% 998µs ± 1% +1.23% (p=0.002 n=10+10)
GoroutineForRange-16 985µs ± 1% 1001µs ± 1% +1.68% (p=0.000 n=10+10)
GoroutineIdle-16 679µs ± 1% 691µs ± 0% +1.74% (p=0.000 n=10+9)
HashStringSpeed-16 5.33ns ± 5% 5.19ns ± 4% ~ (p=0.113 n=9+9)
HashBytesSpeed-16 8.20ns ± 3% 8.24ns ± 1% ~ (p=0.497 n=10+9)
HashInt32Speed-16 4.01ns ± 2% 3.90ns ± 4% -2.63% (p=0.011 n=9+10)
HashInt64Speed-16 3.94ns ± 4% 3.79ns ± 1% -3.74% (p=0.003 n=10+9)
HashStringArraySpeed-16 12.5ns ± 4% 12.3ns ± 1% ~ (p=0.055 n=10+10)
MegMap-16 3.72ns ± 1% 3.73ns ± 1% ~ (p=0.484 n=9+10)
MegOneMap-16 2.28ns ± 1% 2.27ns ± 1% ~ (p=0.287 n=10+10)
MegEqMap-16 22.0µs ± 3% 22.3µs ± 2% +1.48% (p=0.028 n=10+9)
MegEmptyMap-16 0.93ns ± 1% 0.92ns ± 1% -0.52% (p=0.030 n=10+10)
SmallStrMap-16 3.77ns ± 0% 3.77ns ± 0% ~ (p=0.324 n=10+10)
MapStringKeysEight_16-16 3.91ns ± 0% 3.91ns ± 0% ~ (p=0.088 n=9+9)
MapStringKeysEight_32-16 3.58ns ± 1% 3.50ns ± 0% -2.11% (p=0.000 n=10+10)
MapStringKeysEight_64-16 3.58ns ± 1% 3.50ns ± 0% -2.23% (p=0.000 n=10+10)
MapStringKeysEight_1M-16 3.57ns ± 1% 3.50ns ± 0% -1.92% (p=0.000 n=10+10)
IntMap-16 2.89ns ± 1% 2.89ns ± 0% ~ (p=0.381 n=10+10)
MapFirst/1-16 1.60ns ± 1% 1.59ns ± 2% -0.49% (p=0.020 n=10+9)
MapFirst/2-16 1.61ns ± 0% 1.59ns ± 1% -1.17% (p=0.001 n=10+10)
MapFirst/3-16 1.61ns ± 1% 1.59ns ± 1% -1.45% (p=0.000 n=10+10)
MapFirst/4-16 1.60ns ± 1% 1.59ns ± 1% -1.16% (p=0.000 n=10+10)
MapFirst/5-16 1.60ns ± 1% 1.58ns ± 1% -0.98% (p=0.000 n=10+10)
MapFirst/6-16 1.60ns ± 1% 1.59ns ± 1% -0.87% (p=0.001 n=10+10)
MapFirst/7-16 1.60ns ± 1% 1.59ns ± 1% -0.79% (p=0.002 n=10+10)
MapFirst/8-16 1.60ns ± 1% 1.59ns ± 1% -0.67% (p=0.017 n=9+10)
MapFirst/9-16 2.83ns ± 0% 2.83ns ± 0% ~ (p=0.492 n=10+10)
MapFirst/10-16 2.83ns ± 0% 2.84ns ± 0% +0.24% (p=0.017 n=10+10)
MapFirst/11-16 2.83ns ± 0% 2.83ns ± 0% ~ (p=0.445 n=10+10)
MapFirst/12-16 2.83ns ± 0% 2.83ns ± 0% ~ (p=0.564 n=10+10)
MapFirst/13-16 2.83ns ± 0% 2.84ns ± 0% ~ (p=0.175 n=9+10)
MapFirst/14-16 2.83ns ± 0% 2.83ns ± 0% ~ (p=0.322 n=10+9)
MapFirst/15-16 2.83ns ± 0% 2.84ns ± 1% ~ (p=0.209 n=10+10)
MapFirst/16-16 2.83ns ± 1% 2.84ns ± 0% ~ (p=0.238 n=10+10)
MapMid/1-16 1.64ns ± 0% 1.64ns ± 0% ~ (p=0.453 n=10+9)
MapMid/2-16 1.86ns ± 1% 1.86ns ± 0% ~ (p=0.764 n=10+9)
MapMid/3-16 1.86ns ± 0% 1.86ns ± 1% ~ (p=1.000 n=10+10)
MapMid/4-16 2.06ns ± 0% 2.06ns ± 0% -0.27% (p=0.014 n=10+9)
MapMid/5-16 2.06ns ± 0% 2.06ns ± 0% ~ (p=0.075 n=9+10)
MapMid/6-16 2.27ns ± 0% 2.27ns ± 1% ~ (p=0.898 n=10+10)
MapMid/7-16 2.27ns ± 1% 2.26ns ± 0% -0.23% (p=0.049 n=10+10)
MapMid/8-16 2.47ns ± 0% 2.47ns ± 1% ~ (p=0.840 n=10+10)
MapMid/9-16 4.21ns ± 7% 4.13ns ±19% ~ (p=0.315 n=10+10)
MapMid/10-16 4.17ns ± 7% 4.31ns ± 5% +3.37% (p=0.021 n=10+9)
MapMid/11-16 4.18ns ± 7% 4.32ns ± 6% +3.50% (p=0.015 n=10+10)
MapMid/12-16 4.34ns ± 7% 4.30ns ± 5% ~ (p=0.858 n=9+10)
MapMid/13-16 4.25ns ± 6% 4.28ns ± 6% ~ (p=0.489 n=9+9)
MapMid/14-16 3.75ns ±23% 3.90ns ±16% ~ (p=0.353 n=10+10)
MapMid/15-16 3.87ns ±25% 3.95ns ±26% ~ (p=0.315 n=10+10)
MapMid/16-16 4.06ns ±19% 3.94ns ±16% ~ (p=0.796 n=10+10)
MapLast/1-16 1.65ns ± 0% 1.65ns ± 0% ~ (p=0.607 n=10+10)
MapLast/2-16 1.86ns ± 0% 1.86ns ± 0% +0.26% (p=0.029 n=10+10)
MapLast/3-16 2.06ns ± 1% 2.06ns ± 0% ~ (p=0.689 n=8+9)
MapLast/4-16 2.27ns ± 1% 2.26ns ± 0% ~ (p=0.148 n=10+9)
MapLast/5-16 2.47ns ± 0% 2.47ns ± 0% ~ (p=0.385 n=9+10)
MapLast/6-16 2.67ns ± 0% 2.68ns ± 0% ~ (p=0.202 n=9+10)
MapLast/7-16 2.88ns ± 0% 2.88ns ± 0% ~ (p=0.751 n=10+10)
MapLast/8-16 3.08ns ± 0% 3.08ns ± 0% ~ (p=0.826 n=10+9)
MapLast/9-16 4.31ns ± 6% 4.54ns ± 5% ~ (p=0.070 n=9+8)
MapLast/10-16 4.25ns ± 5% 4.42ns ± 6% ~ (p=0.321 n=9+8)
MapLast/11-16 4.59ns ±16% 5.42ns ±44% +17.99% (p=0.019 n=10+10)
MapLast/12-16 5.04ns ±19% 6.11ns ±28% +21.35% (p=0.005 n=9+10)
MapLast/13-16 6.00ns ±35% 5.76ns ± 3% ~ (p=0.173 n=10+8)
MapLast/14-16 4.27ns ± 5% 4.53ns ± 6% +6.14% (p=0.007 n=10+10)
MapLast/15-16 4.41ns ± 1% 4.44ns ± 7% ~ (p=0.515 n=8+10)
MapLast/16-16 4.18ns ± 6% 4.99ns ±18% +19.48% (p=0.000 n=10+10)
MapCycle-16 7.48ns ± 2% 7.46ns ± 1% ~ (p=0.699 n=10+10)
RepeatedLookupStrMapKey32-16 6.98ns ± 3% 6.73ns ± 2% -3.63% (p=0.000 n=10+10)
RepeatedLookupStrMapKey1M-16 14.7µs ± 5% 14.7µs ± 4% ~ (p=0.604 n=9+10)
MakeMap/[Byte]Byte-16 58.5ns ± 1% 58.5ns ± 1% ~ (p=0.780 n=10+9)
MakeMap/[Int]Int-16 113ns ± 0% 113ns ± 1% ~ (p=0.100 n=8+10)
NewEmptyMap-16 2.47ns ± 0% 2.47ns ± 0% ~ (p=0.638 n=10+10)
NewSmallMap-16 11.5ns ± 1% 11.6ns ± 0% +1.18% (p=0.000 n=10+10)
MapIter-16 42.2ns ± 0% 42.8ns ± 1% +1.50% (p=0.000 n=10+10)
MapIterEmpty-16 1.85ns ± 0% 1.85ns ± 0% ~ (p=0.651 n=10+10)
SameLengthMap-16 1.85ns ± 1% 1.85ns ± 0% ~ (p=0.247 n=10+10)
BigKeyMap-16 7.18ns ± 1% 7.42ns ± 4% +3.33% (p=0.004 n=10+10)
BigValMap-16 7.03ns ± 2% 7.19ns ± 1% +2.33% (p=0.000 n=10+9)
SmallKeyMap-16 5.32ns ± 1% 5.24ns ± 1% -1.41% (p=0.000 n=10+10)
MapPopulate/1-16 6.30ns ± 0% 6.41ns ± 1% +1.81% (p=0.000 n=8+10)
MapPopulate/10-16 239ns ± 2% 234ns ± 2% -2.05% (p=0.001 n=9+10)
MapPopulate/100-16 4.19µs ± 2% 4.22µs ± 2% ~ (p=0.171 n=10+10)
MapPopulate/1000-16 52.3µs ± 1% 52.5µs ± 1% ~ (p=0.133 n=9+10)
MapPopulate/10000-16 459µs ± 1% 466µs ± 2% +1.45% (p=0.005 n=10+10)
MapPopulate/100000-16 4.22ms ± 2% 4.25ms ± 2% ~ (p=0.393 n=10+10)
ComplexAlgMap-16 12.5ns ± 1% 12.4ns ± 1% -0.95% (p=0.022 n=10+10)
GoMapClear/Reflexive/1-16 9.61ns ± 1% 9.58ns ± 0% -0.27% (p=0.027 n=10+10)
GoMapClear/Reflexive/10-16 10.0ns ± 1% 10.0ns ± 1% ~ (p=0.648 n=9+9)
GoMapClear/Reflexive/100-16 31.4ns ± 0% 31.4ns ± 1% ~ (p=0.305 n=9+10)
GoMapClear/Reflexive/1000-16 147ns ± 0% 149ns ± 2% +1.21% (p=0.000 n=10+10)
GoMapClear/Reflexive/10000-16 3.99µs ± 0% 4.00µs ± 0% +0.21% (p=0.018 n=9+10)
GoMapClear/NonReflexive/1-16 41.4ns ± 2% 41.7ns ± 1% +0.55% (p=0.043 n=9+10)
GoMapClear/NonReflexive/10-16 50.3ns ± 1% 50.9ns ± 1% +1.16% (p=0.000 n=10+10)
GoMapClear/NonReflexive/100-16 125ns ± 0% 126ns ± 0% +0.96% (p=0.000 n=8+10)
GoMapClear/NonReflexive/1000-16 1.08µs ± 0% 1.08µs ± 1% ~ (p=0.097 n=10+10)
GoMapClear/NonReflexive/10000-16 8.18µs ± 2% 8.10µs ± 0% -0.91% (p=0.019 n=10+8)
MapStringConversion/32/simple-16 4.66ns ± 1% 4.69ns ± 3% ~ (p=0.905 n=9+10)
MapStringConversion/32/struct-16 4.65ns ± 3% 4.94ns ± 2% +6.23% (p=0.000 n=10+10)
MapStringConversion/32/array-16 4.69ns ± 3% 4.72ns ± 3% ~ (p=0.631 n=10+10)
MapStringConversion/64/simple-16 4.14ns ± 0% 4.14ns ± 1% ~ (p=0.342 n=10+10)
MapStringConversion/64/struct-16 4.13ns ± 0% 4.13ns ± 0% ~ (p=0.809 n=10+10)
MapStringConversion/64/array-16 4.13ns ± 1% 4.13ns ± 1% ~ (p=0.752 n=10+10)
MapInterfaceString-16 7.90ns ±23% 8.51ns ±33% ~ (p=0.604 n=9+10)
MapInterfacePtr-16 7.68ns ±29% 7.10ns ±36% ~ (p=0.353 n=10+10)
NewEmptyMapHintLessThan8-16 3.70ns ± 0% 3.70ns ± 0% ~ (p=0.209 n=10+10)
NewEmptyMapHintGreaterThan8-16 270ns ± 1% 272ns ± 1% +0.71% (p=0.005 n=10+9)
MapPop100-16 6.45µs ± 0% 6.50µs ± 1% +0.77% (p=0.000 n=10+10)
MapPop1000-16 114µs ± 1% 114µs ± 1% ~ (p=0.190 n=10+10)
MapPop10000-16 2.28ms ± 2% 2.28ms ± 2% ~ (p=0.912 n=10+10)
MapAssign/Int32/256-16 4.75ns ± 2% 4.82ns ± 4% ~ (p=0.101 n=10+10)
MapAssign/Int32/65536-16 16.4ns ± 1% 16.7ns ± 0% +1.44% (p=0.000 n=10+9)
MapAssign/Int64/256-16 4.79ns ± 5% 4.79ns ± 1% ~ (p=0.616 n=10+8)
MapAssign/Int64/65536-16 17.1ns ± 1% 16.8ns ± 0% -1.28% (p=0.000 n=10+8)
MapAssign/Str/256-16 6.07ns ± 6% 6.24ns ± 2% +2.84% (p=0.035 n=10+9)
MapAssign/Str/65536-16 21.4ns ± 0% 21.4ns ± 3% ~ (p=0.300 n=7+10)
MapOperatorAssign/Int32/256-16 4.82ns ± 3% 4.81ns ± 3% ~ (p=0.684 n=10+10)
MapOperatorAssign/Int32/65536-16 16.8ns ± 1% 16.5ns ± 1% -1.68% (p=0.000 n=9+10)
MapOperatorAssign/Int64/256-16 4.74ns ± 1% 4.77ns ± 3% ~ (p=0.563 n=10+9)
MapOperatorAssign/Int64/65536-16 16.9ns ± 1% 17.2ns ± 1% +1.88% (p=0.000 n=10+10)
MapOperatorAssign/Str/256-16 1.09µs ± 1% 1.10µs ± 2% ~ (p=0.210 n=10+10)
MapOperatorAssign/Str/65536-16 184ns ± 9% 184ns ± 8% ~ (p=0.922 n=10+9)
MapAppendAssign/Int32/256-16 13.8ns ±10% 14.4ns ±11% ~ (p=0.190 n=10+10)
MapAppendAssign/Int32/65536-16 28.9ns ± 5% 30.7ns ± 6% +6.13% (p=0.001 n=9+10)
MapAppendAssign/Int64/256-16 14.5ns ±12% 13.8ns ± 8% -5.02% (p=0.037 n=10+10)
MapAppendAssign/Int64/65536-16 30.9ns ± 1% 30.4ns ± 2% -1.56% (p=0.001 n=10+10)
MapAppendAssign/Str/256-16 30.2ns ± 6% 30.0ns ±10% ~ (p=0.645 n=10+10)
MapAppendAssign/Str/65536-16 44.5ns ± 4% 46.8ns ± 3% +5.17% (p=0.001 n=8+9)
MapDelete/Int32/100-16 18.7ns ± 0% 18.7ns ± 0% -0.27% (p=0.017 n=10+10)
MapDelete/Int32/1000-16 17.6ns ± 1% 17.5ns ± 1% -0.85% (p=0.000 n=9+10)
MapDelete/Int32/10000-16 18.7ns ± 0% 18.3ns ± 1% -1.92% (p=0.000 n=10+10)
MapDelete/Int64/100-16 19.1ns ± 0% 19.2ns ± 0% +0.68% (p=0.000 n=10+9)
MapDelete/Int64/1000-16 17.7ns ± 2% 18.3ns ± 1% +3.00% (p=0.000 n=10+10)
MapDelete/Int64/10000-16 18.8ns ± 1% 19.2ns ± 0% +2.01% (p=0.000 n=10+9)
MapDelete/Str/100-16 26.5ns ± 0% 26.4ns ± 1% -0.73% (p=0.000 n=10+10)
MapDelete/Str/1000-16 23.5ns ± 2% 23.4ns ± 1% ~ (p=0.425 n=10+10)
MapDelete/Str/10000-16 25.1ns ± 0% 25.1ns ± 1% +0.28% (p=0.037 n=10+10)
MapDelete/Pointer/100-16 20.6ns ± 1% 20.6ns ± 0% ~ (p=0.117 n=10+10)
MapDelete/Pointer/1000-16 19.2ns ± 1% 19.4ns ± 1% +0.97% (p=0.004 n=10+10)
MapDelete/Pointer/10000-16 20.0ns ± 0% 20.1ns ± 1% +0.52% (p=0.022 n=10+10)
Memmove/0-16 0.21ns ± 2% 0.21ns ± 1% ~ (p=0.671 n=10+10)
Memmove/1-16 0.93ns ± 0% 0.93ns ± 0% +0.21% (p=0.034 n=10+10)
Memmove/2-16 0.93ns ± 0% 0.93ns ± 0% ~ (p=0.101 n=10+10)
Memmove/3-16 0.93ns ± 1% 0.93ns ± 1% +0.49% (p=0.004 n=10+10)
Memmove/4-16 1.03ns ± 0% 1.03ns ± 0% ~ (p=0.260 n=10+10)
Memmove/5-16 1.13ns ± 0% 1.13ns ± 0% +0.20% (p=0.034 n=10+10)
Memmove/6-16 1.13ns ± 0% 1.13ns ± 1% ~ (p=0.126 n=10+10)
Memmove/7-16 1.13ns ± 0% 1.13ns ± 1% +0.22% (p=0.028 n=10+10)
Memmove/8-16 1.13ns ± 0% 1.13ns ± 0% ~ (p=0.545 n=9+10)
Memmove/9-16 1.25ns ± 0% 1.35ns ± 0% +7.98% (p=0.000 n=10+10)
Memmove/10-16 1.25ns ± 0% 1.35ns ± 0% +7.96% (p=0.000 n=9+9)
Memmove/11-16 1.25ns ± 0% 1.35ns ± 0% +8.53% (p=0.000 n=10+9)
Memmove/12-16 1.25ns ± 0% 1.35ns ± 1% +8.24% (p=0.000 n=10+10)
Memmove/13-16 1.25ns ± 0% 1.34ns ± 0% +7.75% (p=0.000 n=10+10)
Memmove/14-16 1.25ns ± 0% 1.35ns ± 1% +8.28% (p=0.000 n=10+9)
Memmove/15-16 1.25ns ± 0% 1.35ns ± 0% +8.07% (p=0.000 n=10+9)
Memmove/16-16 1.25ns ± 0% 1.35ns ± 1% +8.35% (p=0.000 n=9+10)
Memmove/32-16 1.34ns ± 0% 1.36ns ± 1% +1.22% (p=0.000 n=10+10)
Memmove/64-16 1.45ns ± 0% 1.64ns ± 0% +13.07% (p=0.000 n=10+9)
Memmove/128-16 1.86ns ± 0% 2.02ns ± 0% +8.64% (p=0.000 n=10+10)
Memmove/256-16 2.47ns ± 0% 2.49ns ± 1% +1.14% (p=0.000 n=10+10)
Memmove/512-16 3.96ns ± 1% 3.96ns ± 0% ~ (p=0.182 n=10+10)
Memmove/1024-16 5.90ns ± 1% 5.87ns ± 1% ~ (p=0.258 n=9+9)
Memmove/2048-16 9.62ns ± 1% 9.62ns ± 2% ~ (p=0.963 n=8+9)
Memmove/4096-16 16.4ns ± 0% 17.1ns ± 4% +4.19% (p=0.003 n=8+9)
MemmoveOverlap/32-16 1.62ns ± 1% 1.68ns ± 1% +3.53% (p=0.000 n=10+10)
MemmoveOverlap/64-16 1.64ns ± 0% 1.65ns ± 0% +0.29% (p=0.002 n=9+9)
MemmoveOverlap/128-16 2.06ns ± 0% 2.06ns ± 0% ~ (p=0.070 n=10+10)
MemmoveOverlap/256-16 2.67ns ± 0% 2.67ns ± 0% +0.26% (p=0.012 n=10+10)
MemmoveOverlap/512-16 6.20ns ±18% 5.74ns ± 0% ~ (p=0.645 n=10+8)
MemmoveOverlap/1024-16 7.28ns ± 0% 7.30ns ± 0% +0.28% (p=0.006 n=8+10)
MemmoveOverlap/2048-16 11.9ns ± 0% 12.0ns ± 1% +0.37% (p=0.014 n=9+9)
MemmoveOverlap/4096-16 23.3ns ± 1% 23.1ns ± 1% -0.84% (p=0.000 n=8+10)
MemmoveUnalignedDst/0-16 1.03ns ± 0% 1.03ns ± 0% +0.19% (p=0.007 n=10+10)
MemmoveUnalignedDst/1-16 1.24ns ± 0% 1.25ns ± 1% +0.52% (p=0.022 n=10+10)
MemmoveUnalignedDst/2-16 1.23ns ± 0% 1.23ns ± 0% ~ (p=0.051 n=10+10)
MemmoveUnalignedDst/3-16 1.23ns ± 0% 1.23ns ± 0% +0.14% (p=0.006 n=9+9)
MemmoveUnalignedDst/4-16 1.23ns ± 0% 1.24ns ± 1% +0.37% (p=0.004 n=10+10)
MemmoveUnalignedDst/5-16 1.35ns ± 0% 1.35ns ± 0% ~ (p=0.075 n=10+10)
MemmoveUnalignedDst/6-16 1.34ns ± 0% 1.34ns ± 0% ~ (p=0.779 n=10+10)
MemmoveUnalignedDst/7-16 1.34ns ± 0% 1.34ns ± 0% ~ (p=1.000 n=10+10)
MemmoveUnalignedDst/8-16 1.34ns ± 0% 1.35ns ± 1% +0.39% (p=0.024 n=10+10)
MemmoveUnalignedDst/9-16 1.44ns ± 0% 1.44ns ± 0% ~ (p=0.849 n=10+10)
MemmoveUnalignedDst/10-16 1.44ns ± 0% 1.44ns ± 0% ~ (p=0.255 n=10+10)
MemmoveUnalignedDst/11-16 1.44ns ± 0% 1.44ns ± 0% ~ (p=0.304 n=10+10)
MemmoveUnalignedDst/12-16 1.44ns ± 0% 1.44ns ± 0% ~ (p=0.672 n=10+10)
MemmoveUnalignedDst/13-16 1.44ns ± 0% 1.44ns ± 0% ~ (p=0.435 n=10+10)
MemmoveUnalignedDst/14-16 1.44ns ± 0% 1.44ns ± 0% ~ (p=0.340 n=10+10)
MemmoveUnalignedDst/15-16 1.44ns ± 0% 1.44ns ± 0% ~ (p=0.911 n=10+9)
MemmoveUnalignedDst/16-16 1.44ns ± 0% 1.44ns ± 0% ~ (p=0.074 n=10+10)
MemmoveUnalignedDst/32-16 1.62ns ± 0% 1.63ns ± 0% ~ (p=0.059 n=10+10)
MemmoveUnalignedDst/64-16 1.65ns ± 0% 1.65ns ± 0% ~ (p=0.234 n=10+10)
MemmoveUnalignedDst/128-16 2.06ns ± 0% 2.06ns ± 0% ~ (p=0.709 n=10+9)
MemmoveUnalignedDst/256-16 3.69ns ± 0% 3.70ns ± 0% ~ (p=0.144 n=10+10)
MemmoveUnalignedDst/512-16 4.15ns ± 1% 4.14ns ± 0% ~ (p=0.778 n=10+8)
MemmoveUnalignedDst/1024-16 7.52ns ± 0% 7.53ns ± 1% ~ (p=0.650 n=9+9)
MemmoveUnalignedDst/2048-16 12.9ns ± 0% 12.9ns ± 1% ~ (p=0.548 n=8+8)
MemmoveUnalignedDst/4096-16 25.4ns ± 0% 25.4ns ± 0% ~ (p=0.947 n=9+9)
MemmoveUnalignedDstOverlap/32-16 4.08ns ± 0% 4.09ns ± 0% ~ (p=0.360 n=10+10)
MemmoveUnalignedDstOverlap/64-16 4.56ns ± 0% 4.56ns ± 0% ~ (p=0.705 n=10+9)
MemmoveUnalignedDstOverlap/128-16 4.67ns ± 0% 4.67ns ± 0% ~ (p=0.397 n=10+10)
MemmoveUnalignedDstOverlap/256-16 5.08ns ± 0% 5.08ns ± 0% ~ (p=0.159 n=10+9)
MemmoveUnalignedDstOverlap/512-16 8.45ns ± 5% 8.19ns ± 0% -3.10% (p=0.021 n=10+9)
MemmoveUnalignedDstOverlap/1024-16 9.55ns ± 0% 9.56ns ± 0% ~ (p=0.221 n=8+8)
MemmoveUnalignedDstOverlap/2048-16 14.0ns ± 0% 14.0ns ± 1% ~ (p=0.200 n=10+9)
MemmoveUnalignedDstOverlap/4096-16 26.5ns ± 0% 26.5ns ± 0% ~ (p=0.458 n=10+9)
MemmoveUnalignedSrc/0-16 1.02ns ± 1% 0.99ns ± 1% -2.67% (p=0.000 n=10+9)
MemmoveUnalignedSrc/1-16 1.13ns ± 0% 1.13ns ± 1% -0.25% (p=0.027 n=10+9)
MemmoveUnalignedSrc/2-16 1.13ns ± 1% 1.13ns ± 0% -0.28% (p=0.012 n=10+9)
MemmoveUnalignedSrc/3-16 1.24ns ± 1% 1.23ns ± 0% -0.25% (p=0.022 n=9+10)
MemmoveUnalignedSrc/4-16 1.24ns ± 0% 1.23ns ± 1% ~ (p=0.118 n=9+10)
MemmoveUnalignedSrc/5-16 1.34ns ± 0% 1.34ns ± 1% ~ (p=0.564 n=8+10)
MemmoveUnalignedSrc/6-16 1.34ns ± 0% 1.34ns ± 0% -0.39% (p=0.000 n=10+10)
MemmoveUnalignedSrc/7-16 1.34ns ± 0% 1.34ns ± 0% ~ (p=0.235 n=10+10)
MemmoveUnalignedSrc/8-16 1.34ns ± 0% 1.34ns ± 0% -0.37% (p=0.002 n=10+9)
MemmoveUnalignedSrc/9-16 1.44ns ± 0% 1.44ns ± 0% ~ (p=0.579 n=10+9)
MemmoveUnalignedSrc/10-16 1.44ns ± 0% 1.44ns ± 0% ~ (p=0.534 n=10+9)
MemmoveUnalignedSrc/11-16 1.44ns ± 0% 1.44ns ± 1% ~ (p=0.415 n=10+10)
MemmoveUnalignedSrc/12-16 1.44ns ± 0% 1.44ns ± 0% ~ (p=0.218 n=10+10)
MemmoveUnalignedSrc/13-16 1.44ns ± 0% 1.44ns ± 1% ~ (p=0.693 n=10+10)
MemmoveUnalignedSrc/14-16 1.44ns ± 0% 1.44ns ± 0% ~ (p=0.901 n=10+10)
MemmoveUnalignedSrc/15-16 1.44ns ± 0% 1.44ns ± 0% ~ (p=0.379 n=10+10)
MemmoveUnalignedSrc/16-16 1.44ns ± 1% 1.44ns ± 0% ~ (p=0.538 n=10+10)
MemmoveUnalignedSrc/32-16 1.60ns ± 1% 1.60ns ± 0% ~ (p=0.491 n=10+10)
MemmoveUnalignedSrc/64-16 1.65ns ± 0% 1.65ns ± 0% ~ (p=0.564 n=10+10)
MemmoveUnalignedSrc/128-16 2.09ns ± 0% 2.09ns ± 0% ~ (p=0.497 n=10+9)
MemmoveUnalignedSrc/256-16 2.70ns ± 0% 2.78ns ± 1% +2.81% (p=0.000 n=10+10)
MemmoveUnalignedSrc/512-16 4.31ns ± 0% 4.30ns ± 0% -0.26% (p=0.031 n=8+9)
MemmoveUnalignedSrc/1024-16 7.28ns ± 0% 7.21ns ± 1% -1.05% (p=0.000 n=8+10)
MemmoveUnalignedSrc/2048-16 13.0ns ± 0% 13.0ns ± 0% ~ (p=0.180 n=9+8)
MemmoveUnalignedSrc/4096-16 25.4ns ± 0% 25.3ns ± 1% ~ (p=0.054 n=10+10)
MemmoveUnalignedSrcOverlap/32-16 4.04ns ± 0% 4.06ns ± 0% +0.62% (p=0.000 n=9+10)
MemmoveUnalignedSrcOverlap/64-16 4.12ns ± 0% 4.12ns ± 0% ~ (p=0.421 n=10+10)
MemmoveUnalignedSrcOverlap/128-16 4.53ns ± 0% 4.52ns ± 0% ~ (p=0.251 n=10+10)
MemmoveUnalignedSrcOverlap/256-16 6.17ns ± 0% 6.15ns ± 0% -0.35% (p=0.000 n=10+9)
MemmoveUnalignedSrcOverlap/512-16 7.43ns ± 0% 7.44ns ± 0% ~ (p=0.524 n=9+8)
MemmoveUnalignedSrcOverlap/1024-16 8.94ns ± 0% 8.94ns ± 0% ~ (p=0.419 n=8+8)
MemmoveUnalignedSrcOverlap/2048-16 13.2ns ± 0% 14.5ns ±21% ~ (p=0.107 n=8+10)
MemmoveUnalignedSrcOverlap/4096-16 25.6ns ± 0% 25.6ns ± 1% ~ (p=0.650 n=9+9)
Memclr/5-16 0.86ns ± 1% 0.86ns ± 2% ~ (p=0.531 n=9+9)
Memclr/16-16 1.04ns ± 0% 1.04ns ± 0% +0.32% (p=0.013 n=9+10)
Memclr/64-16 1.23ns ± 0% 1.26ns ± 0% +2.28% (p=0.000 n=10+10)
Memclr/256-16 2.27ns ± 0% 2.27ns ± 0% ~ (p=0.127 n=10+10)
Memclr/4096-16 17.1ns ± 1% 17.3ns ± 0% +0.88% (p=0.000 n=10+10)
Memclr/65536-16 821ns ± 0% 822ns ± 0% ~ (p=0.516 n=10+10)
Memclr/1M-16 14.1µs ± 1% 14.0µs ± 1% ~ (p=0.516 n=10+10)
Memclr/4M-16 86.1µs ± 1% 85.9µs ± 0% ~ (p=0.123 n=10+10)
Memclr/8M-16 174µs ± 2% 173µs ± 0% ~ (p=0.408 n=10+8)
Memclr/16M-16 385µs ± 4% 387µs ± 0% ~ (p=0.173 n=10+8)
Memclr/64M-16 2.18ms ± 0% 2.19ms ± 0% ~ (p=0.113 n=10+9)
GoMemclr/5-16 0.82ns ± 0% 0.82ns ± 0% ~ (p=0.346 n=9+10)
GoMemclr/16-16 1.02ns ± 0% 1.02ns ± 0% +0.22% (p=0.003 n=10+8)
GoMemclr/64-16 1.14ns ± 0% 1.14ns ± 0% ~ (p=0.948 n=10+9)
GoMemclr/256-16 2.06ns ± 0% 2.06ns ± 0% ~ (p=0.868 n=10+10)
MemclrRange/1K_2K-16 457ns ± 0% 428ns ± 1% -6.38% (p=0.000 n=10+10)
MemclrRange/2K_8K-16 1.46µs ± 0% 1.46µs ± 0% ~ (p=0.700 n=10+10)
MemclrRange/4K_16K-16 1.16µs ± 0% 1.16µs ± 0% ~ (p=0.567 n=9+10)
MemclrRange/160K_228K-16 20.7µs ± 0% 20.7µs ± 0% ~ (p=0.160 n=10+10)
ClearFat7-16 0.38ns ± 5% 0.21ns ± 1% -45.79% (p=0.000 n=9+10)
ClearFat8-16 0.21ns ± 3% 0.12ns ± 2% -44.16% (p=0.000 n=8+9)
ClearFat11-16 0.35ns ± 3% 0.21ns ± 1% -40.46% (p=0.000 n=9+9)
ClearFat12-16 0.23ns ± 9% 0.21ns ± 1% -10.23% (p=0.000 n=10+9)
ClearFat13-16 0.22ns ± 6% 0.21ns ± 2% -6.53% (p=0.000 n=10+10)
ClearFat14-16 0.22ns ± 4% 0.21ns ± 1% -5.97% (p=0.000 n=10+10)
ClearFat15-16 0.22ns ± 4% 0.21ns ± 1% -6.96% (p=0.000 n=10+9)
ClearFat16-16 0.19ns ± 9% 0.12ns ± 6% -34.89% (p=0.000 n=9+10)
ClearFat24-16 0.23ns ± 6% 0.21ns ± 1% -10.26% (p=0.000 n=10+9)
ClearFat32-16 0.22ns ± 5% 0.21ns ± 2% -5.31% (p=0.000 n=10+10)
ClearFat40-16 0.34ns ± 4% 0.62ns ± 1% +83.00% (p=0.000 n=10+10)
ClearFat48-16 0.33ns ± 2% 0.41ns ± 0% +26.71% (p=0.000 n=10+10)
ClearFat56-16 0.41ns ± 1% 0.41ns ± 0% ~ (p=0.838 n=10+10)
ClearFat64-16 0.41ns ± 0% 0.41ns ± 0% ~ (p=0.178 n=10+8)
ClearFat72-16 0.82ns ± 0% 0.82ns ± 0% ~ (p=0.669 n=10+10)
ClearFat128-16 1.04ns ± 0% 1.04ns ± 0% ~ (p=0.679 n=10+10)
ClearFat256-16 1.86ns ± 0% 1.86ns ± 0% ~ (p=0.066 n=9+10)
ClearFat512-16 3.50ns ± 0% 3.50ns ± 0% ~ (p=0.626 n=10+10)
ClearFat1024-16 6.79ns ± 0% 6.79ns ± 0% ~ (p=0.986 n=10+10)
ClearFat1032-16 13.6ns ± 0% 13.6ns ± 0% +0.13% (p=0.044 n=10+10)
ClearFat1040-16 10.3ns ± 0% 10.3ns ± 0% ~ (p=0.175 n=10+9)
CopyFat7-16 0.37ns ±13% 0.25ns ± 1% -31.74% (p=0.000 n=10+9)
CopyFat8-16 0.17ns ± 1% 0.17ns ± 2% +1.35% (p=0.004 n=9+9)
CopyFat11-16 0.26ns ± 1% 0.30ns ± 3% +12.58% (p=0.000 n=9+10)
CopyFat12-16 0.28ns ± 2% 0.26ns ± 1% -5.66% (p=0.000 n=9+9)
CopyFat13-16 0.26ns ± 0% 0.28ns ± 4% +7.35% (p=0.000 n=8+10)
CopyFat14-16 0.29ns ± 6% 0.26ns ± 2% -10.46% (p=0.000 n=10+9)
CopyFat15-16 0.26ns ± 1% 0.30ns ± 6% +14.12% (p=0.000 n=8+10)
CopyFat16-16 0.21ns ± 1% 0.21ns ± 0% ~ (p=0.426 n=8+8)
CopyFat24-16 0.29ns ± 3% 0.25ns ± 1% -12.27% (p=0.000 n=9+10)
CopyFat32-16 0.26ns ± 4% 0.29ns ± 4% +11.71% (p=0.000 n=10+10)
CopyFat64-16 0.46ns ± 8% 0.42ns ± 1% -8.37% (p=0.002 n=10+10)
CopyFat72-16 0.82ns ± 0% 0.82ns ± 0% ~ (p=0.563 n=10+10)
CopyFat128-16 1.53ns ± 0% 1.54ns ± 0% +0.62% (p=0.000 n=10+10)
CopyFat256-16 2.68ns ± 0% 2.65ns ± 1% -1.23% (p=0.000 n=10+10)
CopyFat512-16 4.93ns ± 1% 5.19ns ± 3% +5.16% (p=0.000 n=9+9)
CopyFat520-16 6.99ns ± 0% 6.99ns ± 0% ~ (p=0.539 n=10+10)
CopyFat1024-16 11.5ns ± 1% 9.8ns ± 1% -14.98% (p=0.000 n=9+10)
CopyFat1032-16 13.6ns ± 0% 13.6ns ± 0% ~ (p=0.728 n=10+10)
CopyFat1040-16 11.0ns ± 0% 11.1ns ± 0% +0.53% (p=0.000 n=10+10)
Issue18740/2byte-16 10.1µs ± 0% 10.1µs ± 0% ~ (p=0.342 n=10+10)
Issue18740/4byte-16 2.34µs ± 0% 2.35µs ± 0% +0.30% (p=0.002 n=10+8)
Issue18740/8byte-16 1.28µs ± 0% 1.28µs ± 0% +0.32% (p=0.000 n=9+10)
Finalizer-16 345µs ± 1% 336µs ± 0% -2.55% (p=0.000 n=10+9)
FinalizerRun-16 450ns ± 3% 420ns ± 1% -6.65% (p=0.000 n=10+10)
PallocBitsSummarize/Unpacked00-16 2.88ns ± 0% 2.88ns ± 0% ~ (p=0.358 n=10+10)
PallocBitsSummarize/UnpackedFFFFFFFFFFFFFFFF-16 15.2ns ± 0% 15.2ns ± 0% ~ (p=0.925 n=10+10)
PallocBitsSummarize/UnpackedAA-16 16.4ns ± 0% 16.3ns ± 0% ~ (p=0.113 n=9+9)
PallocBitsSummarize/UnpackedAAAAAAAAAAAAAAAA-16 16.5ns ± 0% 16.6ns ± 0% ~ (p=0.238 n=10+10)
PallocBitsSummarize/Unpacked80000000AAAAAAAA-16 37.8ns ± 1% 36.4ns ± 0% -3.70% (p=0.000 n=10+9)
PallocBitsSummarize/UnpackedAAAAAAAA00000001-16 41.8ns ± 1% 39.9ns ± 0% -4.68% (p=0.000 n=9+10)
PallocBitsSummarize/UnpackedBBBBBBBBBBBBBBBB-16 18.3ns ± 0% 18.3ns ± 0% ~ (p=0.781 n=10+10)
PallocBitsSummarize/Unpacked80000000BBBBBBBB-16 38.8ns ± 1% 38.1ns ± 0% -1.78% (p=0.000 n=9+10)
PallocBitsSummarize/UnpackedBBBBBBBB00000001-16 37.5ns ± 0% 36.1ns ± 1% -3.88% (p=0.000 n=8+10)
PallocBitsSummarize/UnpackedCCCCCCCCCCCCCCCC-16 21.8ns ± 0% 21.9ns ± 0% +0.20% (p=0.018 n=10+9)
PallocBitsSummarize/Unpacked4444444444444444-16 21.8ns ± 0% 21.9ns ± 0% +0.20% (p=0.029 n=10+9)
PallocBitsSummarize/Unpacked4040404040404040-16 26.5ns ± 0% 26.5ns ± 0% -0.24% (p=0.001 n=9+10)
PallocBitsSummarize/Unpacked4000400040004000-16 33.4ns ± 1% 31.3ns ± 0% -6.20% (p=0.000 n=9+10)
PallocBitsSummarize/Unpacked1000404044CCAAFF-16 36.4ns ± 1% 35.9ns ± 0% -1.50% (p=0.000 n=10+10)
FindBitRange64/Pattern00Size2-16 0.34ns ± 1% 0.35ns ± 1% +3.80% (p=0.000 n=10+9)
FindBitRange64/Pattern00Size8-16 0.70ns ± 1% 0.70ns ± 0% -0.68% (p=0.000 n=10+10)
FindBitRange64/Pattern00Size32-16 0.70ns ± 1% 0.69ns ± 0% -0.86% (p=0.001 n=10+8)
FindBitRange64/PatternFFFFFFFFFFFFFFFFSize2-16 0.34ns ± 1% 0.35ns ± 1% +4.45% (p=0.000 n=9+8)
FindBitRange64/PatternFFFFFFFFFFFFFFFFSize8-16 1.54ns ± 0% 1.54ns ± 1% ~ (p=0.914 n=9+9)
FindBitRange64/PatternFFFFFFFFFFFFFFFFSize32-16 2.78ns ± 0% 2.78ns ± 0% ~ (p=0.295 n=9+10)
FindBitRange64/PatternAASize2-16 0.34ns ± 2% 0.35ns ± 2% +4.61% (p=0.000 n=10+10)
FindBitRange64/PatternAASize8-16 0.70ns ± 1% 0.70ns ± 1% -0.82% (p=0.005 n=10+10)
FindBitRange64/PatternAASize32-16 0.70ns ± 1% 0.70ns ± 0% -0.73% (p=0.003 n=10+9)
FindBitRange64/PatternAAAAAAAAAAAAAAAASize2-16 0.34ns ± 2% 0.35ns ± 2% +3.94% (p=0.000 n=10+10)
FindBitRange64/PatternAAAAAAAAAAAAAAAASize8-16 0.70ns ± 1% 0.70ns ± 1% -0.67% (p=0.025 n=10+10)
FindBitRange64/PatternAAAAAAAAAAAAAAAASize32-16 0.70ns ± 1% 0.70ns ± 1% ~ (p=0.118 n=9+10)
FindBitRange64/Pattern80000000AAAAAAAASize2-16 0.34ns ± 1% 0.35ns ± 2% +3.72% (p=0.000 n=10+9)
FindBitRange64/Pattern80000000AAAAAAAASize8-16 0.70ns ± 1% 0.70ns ± 0% ~ (p=0.102 n=10+10)
FindBitRange64/Pattern80000000AAAAAAAASize32-16 0.70ns ± 1% 0.70ns ± 1% -0.55% (p=0.011 n=10+10)
FindBitRange64/PatternAAAAAAAA00000001Size2-16 0.34ns ± 2% 0.35ns ± 1% +3.83% (p=0.000 n=10+9)
FindBitRange64/PatternAAAAAAAA00000001Size8-16 0.70ns ± 1% 0.70ns ± 1% ~ (p=0.065 n=10+10)
FindBitRange64/PatternAAAAAAAA00000001Size32-16 0.70ns ± 1% 0.70ns ± 1% -0.95% (p=0.002 n=10+10)
FindBitRange64/PatternBBBBBBBBBBBBBBBBSize2-16 0.34ns ± 0% 0.35ns ± 1% +4.12% (p=0.000 n=8+10)
FindBitRange64/PatternBBBBBBBBBBBBBBBBSize8-16 1.24ns ± 0% 1.23ns ± 0% -0.30% (p=0.002 n=10+9)
FindBitRange64/PatternBBBBBBBBBBBBBBBBSize32-16 1.24ns ± 0% 1.24ns ± 0% -0.17% (p=0.023 n=9+10)
FindBitRange64/Pattern80000000BBBBBBBBSize2-16 0.34ns ± 1% 0.35ns ± 2% +4.82% (p=0.000 n=9+10)
FindBitRange64/Pattern80000000BBBBBBBBSize8-16 1.24ns ± 1% 1.24ns ± 0% ~ (p=0.063 n=10+10)
FindBitRange64/Pattern80000000BBBBBBBBSize32-16 1.24ns ± 0% 1.24ns ± 0% ~ (p=0.164 n=9+10)
FindBitRange64/PatternBBBBBBBB00000001Size2-16 0.34ns ± 1% 0.35ns ± 1% +4.38% (p=0.000 n=8+10)
FindBitRange64/PatternBBBBBBBB00000001Size8-16 1.24ns ± 1% 1.24ns ± 0% ~ (p=0.052 n=10+10)
FindBitRange64/PatternBBBBBBBB00000001Size32-16 1.24ns ± 0% 1.23ns ± 0% -0.40% (p=0.000 n=10+10)
FindBitRange64/PatternCCCCCCCCCCCCCCCCSize2-16 0.34ns ± 0% 0.35ns ± 2% +3.96% (p=0.000 n=9+10)
FindBitRange64/PatternCCCCCCCCCCCCCCCCSize8-16 1.24ns ± 0% 1.23ns ± 0% -0.30% (p=0.000 n=10+9)
FindBitRange64/PatternCCCCCCCCCCCCCCCCSize32-16 1.24ns ± 0% 1.24ns ± 1% ~ (p=0.284 n=10+10)
FindBitRange64/Pattern4444444444444444Size2-16 0.34ns ± 1% 0.35ns ± 1% +3.91% (p=0.000 n=9+9)
FindBitRange64/Pattern4444444444444444Size8-16 0.70ns ± 1% 0.70ns ± 1% ~ (p=0.617 n=10+10)
FindBitRange64/Pattern4444444444444444Size32-16 0.70ns ± 1% 0.70ns ± 1% -0.60% (p=0.006 n=10+10)
FindBitRange64/Pattern4040404040404040Size2-16 0.34ns ± 2% 0.35ns ± 2% +3.67% (p=0.000 n=10+10)
FindBitRange64/Pattern4040404040404040Size8-16 0.70ns ± 2% 0.70ns ± 1% -0.87% (p=0.014 n=10+10)
FindBitRange64/Pattern4040404040404040Size32-16 0.70ns ± 1% 0.70ns ± 1% ~ (p=0.256 n=10+10)
FindBitRange64/Pattern4000400040004000Size2-16 0.34ns ± 2% 0.35ns ± 3% +4.71% (p=0.000 n=10+10)
FindBitRange64/Pattern4000400040004000Size8-16 0.70ns ± 1% 0.70ns ± 1% ~ (p=0.393 n=10+10)
FindBitRange64/Pattern4000400040004000Size32-16 0.70ns ± 1% 0.70ns ± 1% -0.86% (p=0.014 n=10+10)
NetpollBreak-16 1.49µs ± 1% 1.50µs ± 3% ~ (p=0.181 n=8+10)
Syscall-16 3.68ns ± 1% 3.66ns ± 2% ~ (p=0.148 n=10+10)
SyscallWork-16 5.15ns ± 1% 5.13ns ± 0% ~ (p=0.188 n=10+9)
SyscallExcess-16 3.89ns ± 2% 3.83ns ± 1% -1.52% (p=0.001 n=10+10)
SyscallExcessWork-16 5.34ns ± 1% 5.31ns ± 0% -0.64% (p=0.000 n=10+9)
PingPongHog-16 397ns ± 7% 394ns ±11% ~ (p=0.912 n=10+10)
StackGrowth-16 67.9ns ± 0% 68.8ns ± 0% +1.28% (p=0.000 n=10+8)
StackGrowthDeep-16 7.70µs ± 1% 8.48µs ± 2% +10.06% (p=0.000 n=9+10)
CreateGoroutines-16 124ns ± 1% 124ns ± 1% ~ (p=0.254 n=10+10)
CreateGoroutinesParallel-16 25.7ns ± 1% 27.6ns ± 2% +7.51% (p=0.000 n=10+10)
CreateGoroutinesCapture-16 823ns ± 1% 821ns ± 2% ~ (p=0.699 n=10+10)
CreateGoroutinesSingle-16 175ns ± 3% 172ns ± 3% -1.90% (p=0.011 n=10+10)
ClosureCall-16 0.11ns ± 7% 0.12ns ± 3% ~ (p=0.842 n=9+10)
WakeupParallelSpinning/0s-16 11.4µs ± 0% 11.4µs ± 0% ~ (p=0.325 n=9+10)
WakeupParallelSpinning/1µs-16 15.4µs ± 0% 15.4µs ± 1% ~ (p=0.955 n=10+10)
WakeupParallelSpinning/2µs-16 18.7µs ± 2% 18.9µs ± 2% ~ (p=0.052 n=10+10)
WakeupParallelSpinning/5µs-16 30.7µs ± 0% 30.7µs ± 0% -0.03% (p=0.003 n=10+10)
WakeupParallelSpinning/10µs-16 48.8µs ± 0% 48.8µs ± 0% ~ (p=0.670 n=10+10)
WakeupParallelSpinning/20µs-16 90.8µs ± 0% 90.8µs ± 0% -0.02% (p=0.004 n=10+10)
WakeupParallelSpinning/50µs-16 211µs ± 0% 211µs ± 0% ~ (p=0.194 n=10+10)
WakeupParallelSpinning/100µs-16 323µs ± 0% 323µs ± 0% ~ (p=1.000 n=10+9)
WakeupParallelSyscall/0s-16 118µs ± 0% 118µs ± 0% ~ (p=0.447 n=10+9)
WakeupParallelSyscall/1µs-16 119µs ± 2% 119µs ± 1% ~ (p=0.604 n=10+9)
WakeupParallelSyscall/2µs-16 120µs ± 1% 121µs ± 3% ~ (p=0.263 n=8+10)
WakeupParallelSyscall/5µs-16 126µs ± 2% 126µs ± 2% ~ (p=0.510 n=10+9)
WakeupParallelSyscall/10µs-16 136µs ± 1% 137µs ± 1% ~ (p=0.095 n=9+10)
WakeupParallelSyscall/20µs-16 156µs ± 2% 157µs ± 3% ~ (p=0.604 n=10+9)
WakeupParallelSyscall/50µs-16 221µs ± 1% 220µs ± 1% ~ (p=0.063 n=10+10)
WakeupParallelSyscall/100µs-16 326µs ± 0% 325µs ± 0% -0.26% (p=0.003 n=9+10)
Matmult-16 0.67ns ± 2% 0.66ns ± 2% ~ (p=0.256 n=10+10)
Fastrand-16 0.08ns ±11% 0.08ns ±13% ~ (p=0.661 n=9+10)
Fastrand64-16 0.08ns ±11% 0.08ns ± 6% ~ (p=0.631 n=10+10)
FastrandHashiter-16 1.76ns ± 1% 1.76ns ± 1% ~ (p=0.854 n=8+8)
Fastrandn/2-16 0.86ns ± 1% 0.86ns ± 1% +1.09% (p=0.000 n=10+9)
Fastrandn/3-16 0.85ns ± 1% 0.86ns ± 1% +1.23% (p=0.001 n=10+10)
Fastrandn/4-16 0.85ns ± 1% 0.87ns ± 2% +1.60% (p=0.000 n=10+10)
Fastrandn/5-16 0.85ns ± 1% 0.86ns ± 1% +1.05% (p=0.000 n=10+10)
IfaceCmp100-16 46.6ns ± 0% 46.1ns ± 0% -1.18% (p=0.000 n=10+10)
IfaceCmpNil100-16 26.8ns ± 0% 26.8ns ± 0% ~ (p=0.777 n=10+8)
EfaceCmpDiff-16 132ns ± 0% 130ns ± 0% -0.95% (p=0.000 n=10+9)
EfaceCmpDiffIndirect-16 209ns ± 0% 211ns ± 0% +1.14% (p=0.000 n=10+9)
Defer-16 3.40ns ± 1% 3.04ns ± 0% -10.67% (p=0.000 n=10+10)
Defer10-16 29.4ns ± 2% 27.2ns ± 3% -7.26% (p=0.000 n=10+10)
DeferMany-16 110ns ± 6% 113ns ± 2% +3.45% (p=0.017 n=9+9)
PanicRecover-16 67.6ns ± 0% 67.7ns ± 2% ~ (p=0.436 n=9+9)
GoroutineProfile/small-nil/idle-16 3.90µs ± 4% 3.86µs ± 2% ~ (p=0.305 n=10+9)
GoroutineProfile/small-nil/loaded-16 4.82µs ± 6% 4.82µs ± 4% ~…
johanbrandhorst
pushed a commit
to Pryz/go
that referenced
this issue
Feb 12, 2023
This patch rewrites known-size calls to memclrNoHeapPointers with an OpZero.
This significantly improves performance and lets some clears get DSE'd.
One of the cases where this applies is zeroing a known-size array, example:
var x [256]int8
...
for a := range x {
x[a] = 0
}
Other cases can be found in the runtime itself where memclrNoHeapPointers is sometimes directly invoked with a constant.
It seems that for some sized-clears on some architectures (AMD64, maybe others) the memcrlNoHeapPointers is more performant than OpZero.
See the issue #56997 for more details.
Benches ARM (M1 Pro):
name old time/op new time/op delta
MemclrKnownSize1-10 2.03ns ± 0% 0.31ns ± 0% -84.69% (p=0.000 n=18+19)
MemclrKnownSize2-10 1.97ns ± 0% 0.31ns ± 0% -84.19% (p=0.000 n=12+19)
MemclrKnownSize4-10 2.02ns ± 0% 0.31ns ± 0% -84.56% (p=0.000 n=12+20)
MemclrKnownSize8-10 2.02ns ± 0% 0.31ns ± 0% -84.59% (p=0.000 n=14+19)
MemclrKnownSize16-10 2.15ns ± 0% 0.31ns ± 0% -85.50% (p=0.000 n=18+19)
MemclrKnownSize32-10 2.48ns ± 0% 0.31ns ± 0% -87.48% (p=0.000 n=20+19)
MemclrKnownSize64-10 1.93ns ± 0% 0.62ns ± 0% -67.88% (p=0.000 n=20+19)
MemclrKnownSize112-10 2.48ns ± 0% 1.80ns ± 0% -27.74% (p=0.000 n=19+20)
MemclrKnownSize128-10 10.0ns ±112% 2.0ns ± 0% -79.76% (p=0.000 n=18+17)
MemclrKnownSize192-10 27.4ns ±103% 2.6ns ± 0% -90.38% (p=0.000 n=16+19)
MemclrKnownSize248-10 9.67ns ±43% 3.26ns ± 0% -66.29% (p=0.000 n=19+19)
MemclrKnownSize256-10 85.4ns ±148% 3.3ns ± 0% -96.18% (p=0.000 n=20+20)
MemclrKnownSize512-10 223ns ±54% 6ns ± 0% -97.42% (p=0.000 n=18+20)
MemclrKnownSize1024-10 216ns ±26% 11ns ± 0% -95.00% (p=0.000 n=18+15)
MemclrKnownSize4096-10 265ns ± 2% 88ns ± 0% -66.84% (p=0.000 n=19+17)
MemclrKnownSize512KiB-10 9.91µs ± 1% 10.23µs ± 2% +3.14% (p=0.000 n=19+19)
[Geo mean] 15.6ns 2.5ns -83.62%
name old speed new speed delta
MemclrKnownSize1-10 493MB/s ± 0% 3216MB/s ± 0% +553.04% (p=0.000 n=18+19)
MemclrKnownSize2-10 1.02GB/s ± 0% 6.43GB/s ± 0% +532.33% (p=0.000 n=16+19)
MemclrKnownSize4-10 1.99GB/s ± 0% 12.86GB/s ± 0% +547.67% (p=0.000 n=18+20)
MemclrKnownSize8-10 3.96GB/s ± 0% 25.72GB/s ± 0% +548.81% (p=0.000 n=19+19)
MemclrKnownSize16-10 7.46GB/s ± 0% 51.43GB/s ± 0% +589.72% (p=0.000 n=20+19)
MemclrKnownSize32-10 12.9GB/s ± 0% 102.9GB/s ± 0% +698.60% (p=0.000 n=20+18)
MemclrKnownSize64-10 33.1GB/s ± 0% 103.0GB/s ± 0% +211.34% (p=0.000 n=19+19)
MemclrKnownSize112-10 45.1GB/s ± 0% 62.4GB/s ± 0% +38.38% (p=0.000 n=19+20)
MemclrKnownSize128-10 13.3GB/s ±107% 63.5GB/s ± 0% +378.03% (p=0.000 n=19+18)
MemclrKnownSize192-10 6.97GB/s ±139% 72.72GB/s ± 0% +943.44% (p=0.000 n=19+19)
MemclrKnownSize248-10 25.9GB/s ±46% 76.1GB/s ± 0% +194.16% (p=0.000 n=20+17)
MemclrKnownSize256-10 8.64GB/s ±196% 78.51GB/s ± 0% +808.19% (p=0.000 n=20+20)
MemclrKnownSize512-10 2.33GB/s ±86% 89.13GB/s ± 0% +3719.50% (p=0.000 n=17+20)
MemclrKnownSize1024-10 4.85GB/s ±32% 94.93GB/s ± 0% +1856.74% (p=0.000 n=18+19)
MemclrKnownSize4096-10 15.4GB/s ± 2% 46.6GB/s ± 0% +201.55% (p=0.000 n=19+18)
MemclrKnownSize512KiB-10 52.9GB/s ± 1% 51.3GB/s ± 2% -3.04% (p=0.000 n=19+19)
[Geo mean] 7.54GB/s 42.86GB/s +468.76%
Intel Alder Lake 12600k:
name old time/op new time/op delta
MemclrKnownSize1-16 0.59ns ± 3% 0.38ns ± 6% -36.00% (p=0.000 n=19+18)
MemclrKnownSize2-16 0.57ns ± 1% 0.19ns ± 5% -66.27% (p=0.000 n=19+19)
MemclrKnownSize4-16 0.66ns ± 2% 0.36ns ±21% -45.12% (p=0.000 n=19+20)
MemclrKnownSize8-16 0.74ns ± 1% 0.30ns ±26% -59.81% (p=0.000 n=18+20)
MemclrKnownSize16-16 1.00ns ± 7% 0.21ns ± 8% -79.51% (p=0.000 n=20+19)
MemclrKnownSize32-16 0.95ns ± 1% 0.40ns ± 1% -57.61% (p=0.000 n=20+18)
MemclrKnownSize64-16 1.20ns ± 2% 0.41ns ± 0% -65.82% (p=0.000 n=20+18)
MemclrKnownSize112-16 1.27ns ± 2% 1.03ns ± 0% -19.35% (p=0.000 n=20+18)
MemclrKnownSize128-16 1.34ns ± 2% 1.03ns ± 0% -23.02% (p=0.000 n=20+20)
MemclrKnownSize192-16 1.92ns ± 2% 1.44ns ± 0% -24.89% (p=0.000 n=20+16)
MemclrKnownSize248-16 2.77ns ± 1% 3.29ns ± 0% +18.81% (p=0.000 n=20+16)
MemclrKnownSize256-16 1.92ns ± 1% 1.86ns ± 0% -3.49% (p=0.000 n=19+15)
MemclrKnownSize512-16 2.81ns ± 2% 3.49ns ± 0% +24.15% (p=0.000 n=20+17)
MemclrKnownSize1024-16 4.02ns ± 1% 6.78ns ± 0% +68.44% (p=0.000 n=20+18)
MemclrKnownSize4096-16 17.2ns ± 2% 14.4ns ± 0% -16.73% (p=0.000 n=20+17)
MemclrKnownSize512KiB-16 6.71µs ± 1% 6.52µs ± 0% -2.85% (p=0.000 n=20+18)
[Geo mean] 2.60ns 1.71ns -34.06%
name old speed new speed delta
MemclrKnownSize1-16 1.71GB/s ± 3% 2.67GB/s ± 6% +56.39% (p=0.000 n=19+18)
MemclrKnownSize2-16 3.52GB/s ± 2% 10.43GB/s ± 6% +196.04% (p=0.000 n=20+20)
MemclrKnownSize4-16 6.06GB/s ± 1% 10.83GB/s ±11% +78.63% (p=0.000 n=19+18)
MemclrKnownSize8-16 10.7GB/s ± 1% 27.0GB/s ±21% +151.49% (p=0.000 n=18+20)
MemclrKnownSize16-16 16.0GB/s ± 8% 78.1GB/s ± 7% +387.24% (p=0.000 n=20+19)
MemclrKnownSize32-16 33.6GB/s ± 1% 79.4GB/s ± 1% +135.89% (p=0.000 n=20+18)
MemclrKnownSize64-16 53.3GB/s ± 2% 155.9GB/s ± 0% +192.58% (p=0.000 n=20+18)
MemclrKnownSize112-16 88.0GB/s ± 2% 109.1GB/s ± 0% +23.97% (p=0.000 n=20+18)
MemclrKnownSize128-16 95.3GB/s ± 2% 123.8GB/s ± 0% +29.88% (p=0.000 n=20+20)
MemclrKnownSize192-16 100GB/s ± 2% 133GB/s ± 0% +33.12% (p=0.000 n=20+17)
MemclrKnownSize248-16 89.7GB/s ± 1% 75.5GB/s ± 0% -15.84% (p=0.000 n=20+19)
MemclrKnownSize256-16 133GB/s ± 1% 138GB/s ± 0% +3.61% (p=0.000 n=19+14)
MemclrKnownSize512-16 182GB/s ± 2% 147GB/s ± 0% -19.46% (p=0.000 n=20+17)
MemclrKnownSize1024-16 254GB/s ± 1% 151GB/s ± 0% -40.64% (p=0.000 n=20+18)
MemclrKnownSize4096-16 237GB/s ± 2% 285GB/s ± 0% +20.09% (p=0.000 n=20+17)
MemclrKnownSize512KiB-16 78.2GB/s ± 1% 80.4GB/s ± 0% +2.93% (p=0.000 n=20+18)
[Geo mean] 42.1GB/s 63.8GB/s +51.53%
compilecmp linux/amd64:
runtime
runtime.(*pallocData).allocAll 85 -> 45 (-47.06%)
runtime.(*pageAlloc).allocRange 942 -> 923 (-2.02%)
runtime.(*pageAlloc).free 798 -> 774 (-3.01%)
runtime.(*pageBits).clearAll 66 -> 20 (-69.70%)
runtime.startCheckmarks 255 -> 246 (-3.53%)
runtime.(*pallocData).freeAll 86 -> 46 (-46.51%)
runtime.(*pallocBits).freeAll 66 -> 20 (-69.70%)
runtime.(*consistentHeapStats).unsafeClear 66 -> 19 (-71.21%)
runtime.newproc1 965 -> 933 (-3.32%)
crypto/rc4
crypto/rc4.(*Cipher).Reset 78 -> 69 (-11.54%)
compress/bzip2
compress/bzip2.(*reader).readBlock 2973 -> 2941 (-1.08%)
image/jpeg
image/jpeg.(*decoder).processDHT 1179 -> 1166 (-1.10%)
index/suffixarray
index/suffixarray.bucketMax_8_32 394 -> 241 (-38.83%)
index/suffixarray.freq_8_32 317 -> 185 (-41.64%)
index/suffixarray.freq_8_64 317 -> 178 (-43.85%)
index/suffixarray.bucketMin_8_32 394 -> 243 (-38.32%)
index/suffixarray.bucketMin_8_64 398 -> 234 (-41.21%)
index/suffixarray.bucketMax_8_64 398 -> 234 (-41.21%)
compress/flate
compress/flate.(*huffmanBitWriter).generateCodegen 965 -> 838 (-13.16%)
compress/flate.(*compressor).reset 429 -> 409 (-4.66%)
cmd/vendor/golang.org/x/sys/unix
cmd/vendor/golang.org/x/sys/unix.(*FdSet).Zero 66 -> 60 (-9.09%)
cmd/vendor/golang.org/x/sys/unix.(*Ifreq).SetInet4Addr 211 -> 129 (-38.86%)
cmd/vendor/golang.org/x/sys/unix.(*Ifreq).SetUint32 98 -> 14 (-85.71%)
cmd/vendor/golang.org/x/sys/unix.(*Ifreq).clear 66 -> 11 (-83.33%)
cmd/vendor/golang.org/x/sys/unix.(*Ifreq).SetUint16 101 -> 15 (-85.15%)
cmd/vendor/golang.org/x/sys/unix.(*CPUSet).Zero 66 -> 60 (-9.09%)
internal/coverage/decodemeta
internal/coverage/decodemeta.(*CoverageMetaFileReader).rdUint64 325 -> 293 (-9.85%)
crypto/tls
crypto/tls.(*halfConn).setTrafficSecret 253 -> 247 (-2.37%)
crypto/tls.(*Conn).readRecordOrCCS 10315 -> 10283 (-0.31%)
crypto/tls.(*halfConn).changeCipherSpec 271 -> 261 (-3.69%)
crypto/tls.(*Conn).writeRecordLocked 1765 -> 1748 (-0.96%)
file before after Δ %
runtime.s 512467 512164 -303 -0.059%
crypto/rc4.s 955 946 -9 -0.942%
compress/bzip2.s 9586 9554 -32 -0.334%
image/jpeg.s 32122 32109 -13 -0.040%
index/suffixarray.s 38547 37644 -903 -2.343%
compress/flate.s 46668 46521 -147 -0.315%
cmd/vendor/golang.org/x/sys/unix.s 118620 118301 -319 -0.269%
internal/coverage/decodemeta.s 7224 7192 -32 -0.443%
crypto/tls.s 288762 288697 -65 -0.023%
cmd/compile/internal/ssa.s 3639799 3640727 +928 +0.025%
total 20790248 20789353 -895 -0.004%
src/runtime benchmarks (Linux Alder Lake 12600k):
name old time/op new time/op delta
MakeChan/Byte-16 26.2ns ± 2% 25.6ns ± 3% -2.05% (p=0.003 n=9+10)
MakeChan/Int-16 33.9ns ± 2% 33.3ns ± 4% -1.99% (p=0.015 n=10+10)
MakeChan/Ptr-16 54.2ns ± 2% 53.7ns ± 1% -0.90% (p=0.016 n=10+9)
MakeChan/Struct/0-16 23.8ns ± 3% 23.4ns ± 1% -1.72% (p=0.009 n=10+8)
MakeChan/Struct/32-16 55.9ns ± 2% 53.9ns ± 1% -3.48% (p=0.000 n=10+10)
MakeChan/Struct/40-16 63.5ns ± 1% 61.1ns ± 2% -3.79% (p=0.000 n=10+9)
ChanNonblocking-16 0.22ns ± 0% 0.22ns ± 0% +0.40% (p=0.011 n=9+8)
SelectUncontended-16 4.63ns ± 1% 4.62ns ± 0% -0.35% (p=0.001 n=10+8)
SelectSyncContended-16 1.58µs ± 2% 1.59µs ± 1% ~ (p=0.540 n=10+10)
SelectAsyncContended-16 290ns ± 0% 291ns ± 0% +0.14% (p=0.012 n=8+9)
SelectNonblock-16 0.95ns ± 1% 0.95ns ± 1% ~ (p=0.546 n=9+9)
ChanUncontended-16 239ns ± 3% 242ns ± 6% ~ (p=0.886 n=9+10)
ChanContended-16 17.7µs ± 1% 18.2µs ± 1% +2.87% (p=0.000 n=10+9)
ChanSync-16 109ns ± 2% 109ns ± 1% ~ (p=0.342 n=10+10)
ChanSyncWork-16 6.55µs ± 1% 6.53µs ± 1% ~ (p=0.101 n=10+10)
ChanProdCons0-16 502ns ± 1% 499ns ± 0% -0.55% (p=0.001 n=10+9)
ChanProdCons10-16 373ns ± 2% 377ns ± 1% ~ (p=0.095 n=10+9)
ChanProdCons100-16 224ns ± 2% 223ns ± 3% ~ (p=0.150 n=9+10)
ChanProdConsWork0-16 491ns ± 1% 484ns ± 0% -1.26% (p=0.000 n=10+9)
ChanProdConsWork10-16 451ns ± 2% 448ns ± 2% ~ (p=0.210 n=8+10)
ChanProdConsWork100-16 406ns ± 0% 407ns ± 1% ~ (p=0.138 n=8+8)
SelectProdCons-16 509ns ± 0% 509ns ± 0% ~ (p=0.917 n=9+9)
ReceiveDataFromClosedChan-16 12.1ns ± 0% 12.1ns ± 0% ~ (p=0.780 n=10+10)
ChanCreation-16 22.6ns ± 1% 22.4ns ± 0% -0.72% (p=0.001 n=10+8)
ChanSem-16 165ns ± 1% 166ns ± 1% +0.72% (p=0.002 n=10+10)
ChanPopular-16 500µs ± 2% 498µs ± 1% ~ (p=0.218 n=10+10)
ChanClosed-16 0.29ns ± 0% 0.29ns ± 0% +0.09% (p=0.019 n=9+8)
CallClosure-16 1.28ns ± 0% 1.27ns ± 0% -0.51% (p=0.000 n=9+9)
CallClosure1-16 1.50ns ± 0% 1.50ns ± 0% ~ (p=0.123 n=9+9)
CallClosure2-16 8.86ns ± 1% 8.86ns ± 3% ~ (p=0.590 n=9+10)
CallClosure3-16 8.75ns ± 2% 8.69ns ± 2% ~ (p=0.247 n=10+10)
CallClosure4-16 8.65ns ± 2% 8.56ns ± 2% ~ (p=0.105 n=10+10)
Complex128DivNormal-16 2.47ns ± 0% 2.47ns ± 0% ~ (p=0.790 n=10+9)
Complex128DivNisNaN-16 4.44ns ± 0% 4.43ns ± 0% ~ (p=0.564 n=10+10)
Complex128DivDisNaN-16 4.48ns ± 0% 4.48ns ± 0% ~ (p=0.101 n=10+10)
Complex128DivNisInf-16 2.58ns ± 0% 2.58ns ± 0% ~ (p=0.808 n=10+10)
Complex128DivDisInf-16 6.30ns ± 0% 6.31ns ± 0% ~ (p=0.305 n=10+10)
SetTypePtr-16 0.73ns ± 1% 0.73ns ± 3% ~ (p=0.644 n=10+10)
SetTypePtr8-16 4.12ns ± 0% 4.12ns ± 0% ~ (p=0.127 n=10+10)
SetTypePtr16-16 4.13ns ± 1% 4.12ns ± 0% ~ (p=0.109 n=10+10)
SetTypePtr32-16 4.12ns ± 0% 4.12ns ± 0% ~ (p=0.203 n=9+10)
SetTypePtr64-16 4.12ns ± 0% 4.12ns ± 0% ~ (p=0.696 n=10+10)
SetTypePtr126-16 6.91ns ± 0% 6.91ns ± 0% ~ (p=0.469 n=10+10)
SetTypePtr128-16 6.66ns ± 0% 6.67ns ± 0% ~ (p=0.246 n=9+10)
SetTypePtrSlice-16 54.1ns ± 1% 54.1ns ± 1% ~ (p=0.509 n=9+10)
SetTypeNode1-16 4.13ns ± 1% 4.12ns ± 0% ~ (p=0.342 n=10+10)
SetTypeNode1Slice-16 10.1ns ± 1% 10.0ns ± 1% -1.18% (p=0.000 n=10+10)
SetTypeNode8-16 4.12ns ± 0% 4.12ns ± 0% ~ (p=0.137 n=8+8)
SetTypeNode8Slice-16 22.6ns ± 0% 22.6ns ± 0% ~ (p=0.423 n=10+10)
SetTypeNode64-16 6.90ns ± 0% 6.91ns ± 0% ~ (p=0.275 n=10+10)
SetTypeNode64Slice-16 173ns ± 0% 173ns ± 0% ~ (p=0.610 n=9+10)
SetTypeNode64Dead-16 5.53ns ± 0% 5.52ns ± 0% ~ (p=0.123 n=10+6)
SetTypeNode64DeadSlice-16 150ns ± 0% 150ns ± 0% ~ (p=0.398 n=10+10)
SetTypeNode124-16 6.90ns ± 0% 6.90ns ± 0% ~ (p=0.779 n=10+10)
SetTypeNode124Slice-16 222ns ± 5% 217ns ± 0% ~ (p=0.302 n=10+10)
SetTypeNode126-16 6.66ns ± 0% 6.66ns ± 0% ~ (p=0.324 n=10+9)
SetTypeNode126Slice-16 218ns ± 0% 218ns ± 0% ~ (p=0.119 n=9+10)
SetTypeNode128-16 9.76ns ± 0% 9.73ns ± 0% -0.31% (p=0.003 n=9+10)
SetTypeNode128Slice-16 279ns ± 0% 278ns ± 0% ~ (p=0.112 n=10+9)
SetTypeNode130-16 9.77ns ± 0% 9.73ns ± 0% -0.33% (p=0.002 n=10+10)
SetTypeNode130Slice-16 284ns ± 0% 284ns ± 0% ~ (p=0.668 n=10+10)
SetTypeNode1024-16 51.2ns ± 0% 51.6ns ± 1% ~ (p=0.080 n=9+9)
SetTypeNode1024Slice-16 1.83µs ± 0% 1.82µs ± 0% ~ (p=0.115 n=10+10)
Allocation-16 4.64µs ± 1% 4.37µs ± 1% -5.69% (p=0.000 n=9+9)
ReadMemStats-16 5.62µs ± 2% 5.55µs ± 5% -1.36% (p=0.050 n=10+10)
WriteBarrier-16 4.95ns ± 3% 4.99ns ± 3% ~ (p=0.255 n=10+10)
BulkWriteBarrier-16 1.69ns ± 2% 1.63ns ± 4% -3.77% (p=0.001 n=10+10)
ScanStackNoLocals-16 12.8ms ± 2% 12.9ms ± 1% +0.72% (p=0.019 n=10+10)
MSpanCountAlloc/bits=64-16 1.65ns ± 0% 1.65ns ± 0% ~ (p=0.124 n=10+10)
MSpanCountAlloc/bits=128-16 2.08ns ± 1% 2.06ns ± 1% -0.87% (p=0.000 n=10+10)
MSpanCountAlloc/bits=256-16 2.71ns ± 1% 2.69ns ± 1% -0.74% (p=0.001 n=10+9)
MSpanCountAlloc/bits=512-16 4.15ns ± 0% 4.23ns ± 2% +2.15% (p=0.000 n=10+10)
MSpanCountAlloc/bits=1024-16 7.89ns ± 1% 7.89ns ± 1% ~ (p=0.867 n=10+10)
Hash5-16 1.93ns ± 1% 2.01ns ± 0% +3.99% (p=0.000 n=10+8)
Hash16-16 2.04ns ± 1% 2.21ns ± 1% +8.61% (p=0.000 n=10+10)
Hash64-16 2.67ns ± 0% 2.67ns ± 0% ~ (p=0.154 n=9+9)
Hash1024-16 16.4ns ± 0% 16.4ns ± 0% +0.17% (p=0.020 n=9+10)
Hash65536-16 886ns ± 0% 885ns ± 0% ~ (p=0.725 n=10+10)
AlignedLoad-16 0.96ns ± 2% 0.95ns ± 3% ~ (p=0.123 n=10+10)
UnalignedLoad-16 0.95ns ± 2% 1.01ns ± 2% +6.31% (p=0.000 n=10+10)
EqEfaceConcrete-16 0.31ns ± 3% 0.33ns ± 5% +8.10% (p=0.000 n=10+10)
EqIfaceConcrete-16 0.31ns ±13% 0.28ns ± 2% -9.23% (p=0.001 n=10+10)
NeEfaceConcrete-16 0.29ns ± 1% 0.31ns ± 7% +5.59% (p=0.010 n=8+8)
NeIfaceConcrete-16 0.28ns ± 2% 0.29ns ± 1% +4.49% (p=0.000 n=9+8)
ConvT2EByteSized/bool-16 0.53ns ± 1% 0.52ns ± 1% -2.18% (p=0.000 n=10+10)
ConvT2EByteSized/uint8-16 0.53ns ± 1% 0.53ns ± 0% +1.22% (p=0.000 n=10+10)
ConvT2ESmall-16 1.13ns ± 0% 1.13ns ± 0% ~ (p=0.774 n=9+9)
ConvT2EUintptr-16 1.03ns ± 0% 1.04ns ± 0% +0.50% (p=0.000 n=10+8)
ConvT2ELarge-16 14.4ns ± 2% 14.4ns ± 1% ~ (p=0.726 n=10+10)
ConvT2ISmall-16 1.13ns ± 0% 1.13ns ± 0% ~ (p=0.693 n=9+10)
ConvT2IUintptr-16 1.03ns ± 0% 1.03ns ± 0% +0.44% (p=0.000 n=10+10)
ConvT2ILarge-16 14.2ns ± 1% 14.4ns ± 1% +0.85% (p=0.007 n=9+10)
ConvI2E-16 0.54ns ± 1% 0.54ns ± 0% -0.39% (p=0.037 n=10+8)
ConvI2I-16 2.68ns ± 0% 2.70ns ± 1% +0.73% (p=0.000 n=9+10)
AssertE2T-16 0.28ns ± 1% 0.39ns ± 5% +37.38% (p=0.000 n=10+10)
AssertE2TLarge-16 0.42ns ± 2% 0.48ns ± 1% +14.92% (p=0.000 n=9+10)
AssertE2I-16 2.67ns ± 0% 2.67ns ± 0% ~ (p=0.352 n=9+9)
AssertI2T-16 0.37ns ± 3% 0.34ns ± 1% -6.16% (p=0.000 n=10+10)
AssertI2I-16 2.67ns ± 0% 2.67ns ± 0% ~ (p=0.286 n=10+10)
AssertI2E-16 0.54ns ± 1% 0.54ns ± 0% -0.94% (p=0.000 n=10+10)
AssertE2E-16 0.41ns ± 0% 0.41ns ± 1% ~ (p=0.880 n=9+9)
AssertE2T2-16 0.41ns ± 1% 0.41ns ± 1% ~ (p=0.725 n=10+10)
AssertE2T2Blank-16 0.24ns ± 5% 0.21ns ± 1% -14.79% (p=0.000 n=10+9)
AssertI2E2-16 0.69ns ± 0% 0.69ns ± 1% ~ (p=0.541 n=10+10)
AssertI2E2Blank-16 0.26ns ± 9% 0.21ns ± 1% -18.86% (p=0.000 n=10+9)
AssertE2E2-16 0.53ns ± 1% 0.53ns ± 1% +0.72% (p=0.004 n=10+10)
AssertE2E2Blank-16 0.23ns ± 4% 0.21ns ± 1% -8.42% (p=0.000 n=10+10)
ConvT2Ezero/zero/16-16 1.13ns ± 0% 1.14ns ± 1% ~ (p=0.583 n=9+10)
ConvT2Ezero/zero/32-16 1.13ns ± 0% 1.13ns ± 0% ~ (p=0.417 n=10+10)
ConvT2Ezero/zero/64-16 1.03ns ± 1% 1.03ns ± 0% ~ (p=0.051 n=10+10)
ConvT2Ezero/zero/str-16 1.03ns ± 0% 1.03ns ± 0% ~ (p=0.132 n=10+10)
ConvT2Ezero/zero/slice-16 1.14ns ± 0% 1.15ns ± 0% +0.49% (p=0.001 n=10+10)
ConvT2Ezero/zero/big-16 123ns ± 1% 123ns ± 1% ~ (p=0.171 n=10+10)
ConvT2Ezero/nonzero/str-16 19.4ns ± 1% 19.3ns ± 3% ~ (p=0.548 n=9+10)
ConvT2Ezero/nonzero/slice-16 22.2ns ± 2% 22.0ns ± 2% ~ (p=0.109 n=10+10)
ConvT2Ezero/nonzero/big-16 123ns ± 1% 123ns ± 1% ~ (p=0.446 n=10+8)
ConvT2Ezero/smallint/16-16 1.13ns ± 0% 1.14ns ± 1% ~ (p=0.362 n=10+10)
ConvT2Ezero/smallint/32-16 1.13ns ± 0% 1.13ns ± 0% ~ (p=0.907 n=10+9)
ConvT2Ezero/smallint/64-16 1.04ns ± 0% 1.03ns ± 0% -0.38% (p=0.002 n=10+10)
ConvT2Ezero/largeint/16-16 6.65ns ± 1% 6.65ns ± 2% ~ (p=0.618 n=10+9)
ConvT2Ezero/largeint/32-16 6.75ns ± 3% 6.63ns ± 2% -1.77% (p=0.015 n=10+10)
ConvT2Ezero/largeint/64-16 9.19ns ± 1% 9.26ns ± 2% ~ (p=0.123 n=10+10)
Malloc8-16 8.66ns ± 1% 8.89ns ± 2% +2.74% (p=0.000 n=10+10)
Malloc16-16 13.7ns ± 1% 13.8ns ± 1% +0.71% (p=0.022 n=10+8)
MallocTypeInfo8-16 11.7ns ± 3% 11.6ns ± 2% ~ (p=0.469 n=10+10)
MallocTypeInfo16-16 18.3ns ± 1% 18.2ns ± 2% ~ (p=0.251 n=9+10)
MallocLargeStruct-16 195ns ± 1% 198ns ± 1% +1.65% (p=0.000 n=9+10)
GoroutineSelect-16 1.10ms ± 1% 1.12ms ± 1% +1.36% (p=0.000 n=10+8)
GoroutineBlocking-16 986µs ± 1% 998µs ± 1% +1.23% (p=0.002 n=10+10)
GoroutineForRange-16 985µs ± 1% 1001µs ± 1% +1.68% (p=0.000 n=10+10)
GoroutineIdle-16 679µs ± 1% 691µs ± 0% +1.74% (p=0.000 n=10+9)
HashStringSpeed-16 5.33ns ± 5% 5.19ns ± 4% ~ (p=0.113 n=9+9)
HashBytesSpeed-16 8.20ns ± 3% 8.24ns ± 1% ~ (p=0.497 n=10+9)
HashInt32Speed-16 4.01ns ± 2% 3.90ns ± 4% -2.63% (p=0.011 n=9+10)
HashInt64Speed-16 3.94ns ± 4% 3.79ns ± 1% -3.74% (p=0.003 n=10+9)
HashStringArraySpeed-16 12.5ns ± 4% 12.3ns ± 1% ~ (p=0.055 n=10+10)
MegMap-16 3.72ns ± 1% 3.73ns ± 1% ~ (p=0.484 n=9+10)
MegOneMap-16 2.28ns ± 1% 2.27ns ± 1% ~ (p=0.287 n=10+10)
MegEqMap-16 22.0µs ± 3% 22.3µs ± 2% +1.48% (p=0.028 n=10+9)
MegEmptyMap-16 0.93ns ± 1% 0.92ns ± 1% -0.52% (p=0.030 n=10+10)
SmallStrMap-16 3.77ns ± 0% 3.77ns ± 0% ~ (p=0.324 n=10+10)
MapStringKeysEight_16-16 3.91ns ± 0% 3.91ns ± 0% ~ (p=0.088 n=9+9)
MapStringKeysEight_32-16 3.58ns ± 1% 3.50ns ± 0% -2.11% (p=0.000 n=10+10)
MapStringKeysEight_64-16 3.58ns ± 1% 3.50ns ± 0% -2.23% (p=0.000 n=10+10)
MapStringKeysEight_1M-16 3.57ns ± 1% 3.50ns ± 0% -1.92% (p=0.000 n=10+10)
IntMap-16 2.89ns ± 1% 2.89ns ± 0% ~ (p=0.381 n=10+10)
MapFirst/1-16 1.60ns ± 1% 1.59ns ± 2% -0.49% (p=0.020 n=10+9)
MapFirst/2-16 1.61ns ± 0% 1.59ns ± 1% -1.17% (p=0.001 n=10+10)
MapFirst/3-16 1.61ns ± 1% 1.59ns ± 1% -1.45% (p=0.000 n=10+10)
MapFirst/4-16 1.60ns ± 1% 1.59ns ± 1% -1.16% (p=0.000 n=10+10)
MapFirst/5-16 1.60ns ± 1% 1.58ns ± 1% -0.98% (p=0.000 n=10+10)
MapFirst/6-16 1.60ns ± 1% 1.59ns ± 1% -0.87% (p=0.001 n=10+10)
MapFirst/7-16 1.60ns ± 1% 1.59ns ± 1% -0.79% (p=0.002 n=10+10)
MapFirst/8-16 1.60ns ± 1% 1.59ns ± 1% -0.67% (p=0.017 n=9+10)
MapFirst/9-16 2.83ns ± 0% 2.83ns ± 0% ~ (p=0.492 n=10+10)
MapFirst/10-16 2.83ns ± 0% 2.84ns ± 0% +0.24% (p=0.017 n=10+10)
MapFirst/11-16 2.83ns ± 0% 2.83ns ± 0% ~ (p=0.445 n=10+10)
MapFirst/12-16 2.83ns ± 0% 2.83ns ± 0% ~ (p=0.564 n=10+10)
MapFirst/13-16 2.83ns ± 0% 2.84ns ± 0% ~ (p=0.175 n=9+10)
MapFirst/14-16 2.83ns ± 0% 2.83ns ± 0% ~ (p=0.322 n=10+9)
MapFirst/15-16 2.83ns ± 0% 2.84ns ± 1% ~ (p=0.209 n=10+10)
MapFirst/16-16 2.83ns ± 1% 2.84ns ± 0% ~ (p=0.238 n=10+10)
MapMid/1-16 1.64ns ± 0% 1.64ns ± 0% ~ (p=0.453 n=10+9)
MapMid/2-16 1.86ns ± 1% 1.86ns ± 0% ~ (p=0.764 n=10+9)
MapMid/3-16 1.86ns ± 0% 1.86ns ± 1% ~ (p=1.000 n=10+10)
MapMid/4-16 2.06ns ± 0% 2.06ns ± 0% -0.27% (p=0.014 n=10+9)
MapMid/5-16 2.06ns ± 0% 2.06ns ± 0% ~ (p=0.075 n=9+10)
MapMid/6-16 2.27ns ± 0% 2.27ns ± 1% ~ (p=0.898 n=10+10)
MapMid/7-16 2.27ns ± 1% 2.26ns ± 0% -0.23% (p=0.049 n=10+10)
MapMid/8-16 2.47ns ± 0% 2.47ns ± 1% ~ (p=0.840 n=10+10)
MapMid/9-16 4.21ns ± 7% 4.13ns ±19% ~ (p=0.315 n=10+10)
MapMid/10-16 4.17ns ± 7% 4.31ns ± 5% +3.37% (p=0.021 n=10+9)
MapMid/11-16 4.18ns ± 7% 4.32ns ± 6% +3.50% (p=0.015 n=10+10)
MapMid/12-16 4.34ns ± 7% 4.30ns ± 5% ~ (p=0.858 n=9+10)
MapMid/13-16 4.25ns ± 6% 4.28ns ± 6% ~ (p=0.489 n=9+9)
MapMid/14-16 3.75ns ±23% 3.90ns ±16% ~ (p=0.353 n=10+10)
MapMid/15-16 3.87ns ±25% 3.95ns ±26% ~ (p=0.315 n=10+10)
MapMid/16-16 4.06ns ±19% 3.94ns ±16% ~ (p=0.796 n=10+10)
MapLast/1-16 1.65ns ± 0% 1.65ns ± 0% ~ (p=0.607 n=10+10)
MapLast/2-16 1.86ns ± 0% 1.86ns ± 0% +0.26% (p=0.029 n=10+10)
MapLast/3-16 2.06ns ± 1% 2.06ns ± 0% ~ (p=0.689 n=8+9)
MapLast/4-16 2.27ns ± 1% 2.26ns ± 0% ~ (p=0.148 n=10+9)
MapLast/5-16 2.47ns ± 0% 2.47ns ± 0% ~ (p=0.385 n=9+10)
MapLast/6-16 2.67ns ± 0% 2.68ns ± 0% ~ (p=0.202 n=9+10)
MapLast/7-16 2.88ns ± 0% 2.88ns ± 0% ~ (p=0.751 n=10+10)
MapLast/8-16 3.08ns ± 0% 3.08ns ± 0% ~ (p=0.826 n=10+9)
MapLast/9-16 4.31ns ± 6% 4.54ns ± 5% ~ (p=0.070 n=9+8)
MapLast/10-16 4.25ns ± 5% 4.42ns ± 6% ~ (p=0.321 n=9+8)
MapLast/11-16 4.59ns ±16% 5.42ns ±44% +17.99% (p=0.019 n=10+10)
MapLast/12-16 5.04ns ±19% 6.11ns ±28% +21.35% (p=0.005 n=9+10)
MapLast/13-16 6.00ns ±35% 5.76ns ± 3% ~ (p=0.173 n=10+8)
MapLast/14-16 4.27ns ± 5% 4.53ns ± 6% +6.14% (p=0.007 n=10+10)
MapLast/15-16 4.41ns ± 1% 4.44ns ± 7% ~ (p=0.515 n=8+10)
MapLast/16-16 4.18ns ± 6% 4.99ns ±18% +19.48% (p=0.000 n=10+10)
MapCycle-16 7.48ns ± 2% 7.46ns ± 1% ~ (p=0.699 n=10+10)
RepeatedLookupStrMapKey32-16 6.98ns ± 3% 6.73ns ± 2% -3.63% (p=0.000 n=10+10)
RepeatedLookupStrMapKey1M-16 14.7µs ± 5% 14.7µs ± 4% ~ (p=0.604 n=9+10)
MakeMap/[Byte]Byte-16 58.5ns ± 1% 58.5ns ± 1% ~ (p=0.780 n=10+9)
MakeMap/[Int]Int-16 113ns ± 0% 113ns ± 1% ~ (p=0.100 n=8+10)
NewEmptyMap-16 2.47ns ± 0% 2.47ns ± 0% ~ (p=0.638 n=10+10)
NewSmallMap-16 11.5ns ± 1% 11.6ns ± 0% +1.18% (p=0.000 n=10+10)
MapIter-16 42.2ns ± 0% 42.8ns ± 1% +1.50% (p=0.000 n=10+10)
MapIterEmpty-16 1.85ns ± 0% 1.85ns ± 0% ~ (p=0.651 n=10+10)
SameLengthMap-16 1.85ns ± 1% 1.85ns ± 0% ~ (p=0.247 n=10+10)
BigKeyMap-16 7.18ns ± 1% 7.42ns ± 4% +3.33% (p=0.004 n=10+10)
BigValMap-16 7.03ns ± 2% 7.19ns ± 1% +2.33% (p=0.000 n=10+9)
SmallKeyMap-16 5.32ns ± 1% 5.24ns ± 1% -1.41% (p=0.000 n=10+10)
MapPopulate/1-16 6.30ns ± 0% 6.41ns ± 1% +1.81% (p=0.000 n=8+10)
MapPopulate/10-16 239ns ± 2% 234ns ± 2% -2.05% (p=0.001 n=9+10)
MapPopulate/100-16 4.19µs ± 2% 4.22µs ± 2% ~ (p=0.171 n=10+10)
MapPopulate/1000-16 52.3µs ± 1% 52.5µs ± 1% ~ (p=0.133 n=9+10)
MapPopulate/10000-16 459µs ± 1% 466µs ± 2% +1.45% (p=0.005 n=10+10)
MapPopulate/100000-16 4.22ms ± 2% 4.25ms ± 2% ~ (p=0.393 n=10+10)
ComplexAlgMap-16 12.5ns ± 1% 12.4ns ± 1% -0.95% (p=0.022 n=10+10)
GoMapClear/Reflexive/1-16 9.61ns ± 1% 9.58ns ± 0% -0.27% (p=0.027 n=10+10)
GoMapClear/Reflexive/10-16 10.0ns ± 1% 10.0ns ± 1% ~ (p=0.648 n=9+9)
GoMapClear/Reflexive/100-16 31.4ns ± 0% 31.4ns ± 1% ~ (p=0.305 n=9+10)
GoMapClear/Reflexive/1000-16 147ns ± 0% 149ns ± 2% +1.21% (p=0.000 n=10+10)
GoMapClear/Reflexive/10000-16 3.99µs ± 0% 4.00µs ± 0% +0.21% (p=0.018 n=9+10)
GoMapClear/NonReflexive/1-16 41.4ns ± 2% 41.7ns ± 1% +0.55% (p=0.043 n=9+10)
GoMapClear/NonReflexive/10-16 50.3ns ± 1% 50.9ns ± 1% +1.16% (p=0.000 n=10+10)
GoMapClear/NonReflexive/100-16 125ns ± 0% 126ns ± 0% +0.96% (p=0.000 n=8+10)
GoMapClear/NonReflexive/1000-16 1.08µs ± 0% 1.08µs ± 1% ~ (p=0.097 n=10+10)
GoMapClear/NonReflexive/10000-16 8.18µs ± 2% 8.10µs ± 0% -0.91% (p=0.019 n=10+8)
MapStringConversion/32/simple-16 4.66ns ± 1% 4.69ns ± 3% ~ (p=0.905 n=9+10)
MapStringConversion/32/struct-16 4.65ns ± 3% 4.94ns ± 2% +6.23% (p=0.000 n=10+10)
MapStringConversion/32/array-16 4.69ns ± 3% 4.72ns ± 3% ~ (p=0.631 n=10+10)
MapStringConversion/64/simple-16 4.14ns ± 0% 4.14ns ± 1% ~ (p=0.342 n=10+10)
MapStringConversion/64/struct-16 4.13ns ± 0% 4.13ns ± 0% ~ (p=0.809 n=10+10)
MapStringConversion/64/array-16 4.13ns ± 1% 4.13ns ± 1% ~ (p=0.752 n=10+10)
MapInterfaceString-16 7.90ns ±23% 8.51ns ±33% ~ (p=0.604 n=9+10)
MapInterfacePtr-16 7.68ns ±29% 7.10ns ±36% ~ (p=0.353 n=10+10)
NewEmptyMapHintLessThan8-16 3.70ns ± 0% 3.70ns ± 0% ~ (p=0.209 n=10+10)
NewEmptyMapHintGreaterThan8-16 270ns ± 1% 272ns ± 1% +0.71% (p=0.005 n=10+9)
MapPop100-16 6.45µs ± 0% 6.50µs ± 1% +0.77% (p=0.000 n=10+10)
MapPop1000-16 114µs ± 1% 114µs ± 1% ~ (p=0.190 n=10+10)
MapPop10000-16 2.28ms ± 2% 2.28ms ± 2% ~ (p=0.912 n=10+10)
MapAssign/Int32/256-16 4.75ns ± 2% 4.82ns ± 4% ~ (p=0.101 n=10+10)
MapAssign/Int32/65536-16 16.4ns ± 1% 16.7ns ± 0% +1.44% (p=0.000 n=10+9)
MapAssign/Int64/256-16 4.79ns ± 5% 4.79ns ± 1% ~ (p=0.616 n=10+8)
MapAssign/Int64/65536-16 17.1ns ± 1% 16.8ns ± 0% -1.28% (p=0.000 n=10+8)
MapAssign/Str/256-16 6.07ns ± 6% 6.24ns ± 2% +2.84% (p=0.035 n=10+9)
MapAssign/Str/65536-16 21.4ns ± 0% 21.4ns ± 3% ~ (p=0.300 n=7+10)
MapOperatorAssign/Int32/256-16 4.82ns ± 3% 4.81ns ± 3% ~ (p=0.684 n=10+10)
MapOperatorAssign/Int32/65536-16 16.8ns ± 1% 16.5ns ± 1% -1.68% (p=0.000 n=9+10)
MapOperatorAssign/Int64/256-16 4.74ns ± 1% 4.77ns ± 3% ~ (p=0.563 n=10+9)
MapOperatorAssign/Int64/65536-16 16.9ns ± 1% 17.2ns ± 1% +1.88% (p=0.000 n=10+10)
MapOperatorAssign/Str/256-16 1.09µs ± 1% 1.10µs ± 2% ~ (p=0.210 n=10+10)
MapOperatorAssign/Str/65536-16 184ns ± 9% 184ns ± 8% ~ (p=0.922 n=10+9)
MapAppendAssign/Int32/256-16 13.8ns ±10% 14.4ns ±11% ~ (p=0.190 n=10+10)
MapAppendAssign/Int32/65536-16 28.9ns ± 5% 30.7ns ± 6% +6.13% (p=0.001 n=9+10)
MapAppendAssign/Int64/256-16 14.5ns ±12% 13.8ns ± 8% -5.02% (p=0.037 n=10+10)
MapAppendAssign/Int64/65536-16 30.9ns ± 1% 30.4ns ± 2% -1.56% (p=0.001 n=10+10)
MapAppendAssign/Str/256-16 30.2ns ± 6% 30.0ns ±10% ~ (p=0.645 n=10+10)
MapAppendAssign/Str/65536-16 44.5ns ± 4% 46.8ns ± 3% +5.17% (p=0.001 n=8+9)
MapDelete/Int32/100-16 18.7ns ± 0% 18.7ns ± 0% -0.27% (p=0.017 n=10+10)
MapDelete/Int32/1000-16 17.6ns ± 1% 17.5ns ± 1% -0.85% (p=0.000 n=9+10)
MapDelete/Int32/10000-16 18.7ns ± 0% 18.3ns ± 1% -1.92% (p=0.000 n=10+10)
MapDelete/Int64/100-16 19.1ns ± 0% 19.2ns ± 0% +0.68% (p=0.000 n=10+9)
MapDelete/Int64/1000-16 17.7ns ± 2% 18.3ns ± 1% +3.00% (p=0.000 n=10+10)
MapDelete/Int64/10000-16 18.8ns ± 1% 19.2ns ± 0% +2.01% (p=0.000 n=10+9)
MapDelete/Str/100-16 26.5ns ± 0% 26.4ns ± 1% -0.73% (p=0.000 n=10+10)
MapDelete/Str/1000-16 23.5ns ± 2% 23.4ns ± 1% ~ (p=0.425 n=10+10)
MapDelete/Str/10000-16 25.1ns ± 0% 25.1ns ± 1% +0.28% (p=0.037 n=10+10)
MapDelete/Pointer/100-16 20.6ns ± 1% 20.6ns ± 0% ~ (p=0.117 n=10+10)
MapDelete/Pointer/1000-16 19.2ns ± 1% 19.4ns ± 1% +0.97% (p=0.004 n=10+10)
MapDelete/Pointer/10000-16 20.0ns ± 0% 20.1ns ± 1% +0.52% (p=0.022 n=10+10)
Memmove/0-16 0.21ns ± 2% 0.21ns ± 1% ~ (p=0.671 n=10+10)
Memmove/1-16 0.93ns ± 0% 0.93ns ± 0% +0.21% (p=0.034 n=10+10)
Memmove/2-16 0.93ns ± 0% 0.93ns ± 0% ~ (p=0.101 n=10+10)
Memmove/3-16 0.93ns ± 1% 0.93ns ± 1% +0.49% (p=0.004 n=10+10)
Memmove/4-16 1.03ns ± 0% 1.03ns ± 0% ~ (p=0.260 n=10+10)
Memmove/5-16 1.13ns ± 0% 1.13ns ± 0% +0.20% (p=0.034 n=10+10)
Memmove/6-16 1.13ns ± 0% 1.13ns ± 1% ~ (p=0.126 n=10+10)
Memmove/7-16 1.13ns ± 0% 1.13ns ± 1% +0.22% (p=0.028 n=10+10)
Memmove/8-16 1.13ns ± 0% 1.13ns ± 0% ~ (p=0.545 n=9+10)
Memmove/9-16 1.25ns ± 0% 1.35ns ± 0% +7.98% (p=0.000 n=10+10)
Memmove/10-16 1.25ns ± 0% 1.35ns ± 0% +7.96% (p=0.000 n=9+9)
Memmove/11-16 1.25ns ± 0% 1.35ns ± 0% +8.53% (p=0.000 n=10+9)
Memmove/12-16 1.25ns ± 0% 1.35ns ± 1% +8.24% (p=0.000 n=10+10)
Memmove/13-16 1.25ns ± 0% 1.34ns ± 0% +7.75% (p=0.000 n=10+10)
Memmove/14-16 1.25ns ± 0% 1.35ns ± 1% +8.28% (p=0.000 n=10+9)
Memmove/15-16 1.25ns ± 0% 1.35ns ± 0% +8.07% (p=0.000 n=10+9)
Memmove/16-16 1.25ns ± 0% 1.35ns ± 1% +8.35% (p=0.000 n=9+10)
Memmove/32-16 1.34ns ± 0% 1.36ns ± 1% +1.22% (p=0.000 n=10+10)
Memmove/64-16 1.45ns ± 0% 1.64ns ± 0% +13.07% (p=0.000 n=10+9)
Memmove/128-16 1.86ns ± 0% 2.02ns ± 0% +8.64% (p=0.000 n=10+10)
Memmove/256-16 2.47ns ± 0% 2.49ns ± 1% +1.14% (p=0.000 n=10+10)
Memmove/512-16 3.96ns ± 1% 3.96ns ± 0% ~ (p=0.182 n=10+10)
Memmove/1024-16 5.90ns ± 1% 5.87ns ± 1% ~ (p=0.258 n=9+9)
Memmove/2048-16 9.62ns ± 1% 9.62ns ± 2% ~ (p=0.963 n=8+9)
Memmove/4096-16 16.4ns ± 0% 17.1ns ± 4% +4.19% (p=0.003 n=8+9)
MemmoveOverlap/32-16 1.62ns ± 1% 1.68ns ± 1% +3.53% (p=0.000 n=10+10)
MemmoveOverlap/64-16 1.64ns ± 0% 1.65ns ± 0% +0.29% (p=0.002 n=9+9)
MemmoveOverlap/128-16 2.06ns ± 0% 2.06ns ± 0% ~ (p=0.070 n=10+10)
MemmoveOverlap/256-16 2.67ns ± 0% 2.67ns ± 0% +0.26% (p=0.012 n=10+10)
MemmoveOverlap/512-16 6.20ns ±18% 5.74ns ± 0% ~ (p=0.645 n=10+8)
MemmoveOverlap/1024-16 7.28ns ± 0% 7.30ns ± 0% +0.28% (p=0.006 n=8+10)
MemmoveOverlap/2048-16 11.9ns ± 0% 12.0ns ± 1% +0.37% (p=0.014 n=9+9)
MemmoveOverlap/4096-16 23.3ns ± 1% 23.1ns ± 1% -0.84% (p=0.000 n=8+10)
MemmoveUnalignedDst/0-16 1.03ns ± 0% 1.03ns ± 0% +0.19% (p=0.007 n=10+10)
MemmoveUnalignedDst/1-16 1.24ns ± 0% 1.25ns ± 1% +0.52% (p=0.022 n=10+10)
MemmoveUnalignedDst/2-16 1.23ns ± 0% 1.23ns ± 0% ~ (p=0.051 n=10+10)
MemmoveUnalignedDst/3-16 1.23ns ± 0% 1.23ns ± 0% +0.14% (p=0.006 n=9+9)
MemmoveUnalignedDst/4-16 1.23ns ± 0% 1.24ns ± 1% +0.37% (p=0.004 n=10+10)
MemmoveUnalignedDst/5-16 1.35ns ± 0% 1.35ns ± 0% ~ (p=0.075 n=10+10)
MemmoveUnalignedDst/6-16 1.34ns ± 0% 1.34ns ± 0% ~ (p=0.779 n=10+10)
MemmoveUnalignedDst/7-16 1.34ns ± 0% 1.34ns ± 0% ~ (p=1.000 n=10+10)
MemmoveUnalignedDst/8-16 1.34ns ± 0% 1.35ns ± 1% +0.39% (p=0.024 n=10+10)
MemmoveUnalignedDst/9-16 1.44ns ± 0% 1.44ns ± 0% ~ (p=0.849 n=10+10)
MemmoveUnalignedDst/10-16 1.44ns ± 0% 1.44ns ± 0% ~ (p=0.255 n=10+10)
MemmoveUnalignedDst/11-16 1.44ns ± 0% 1.44ns ± 0% ~ (p=0.304 n=10+10)
MemmoveUnalignedDst/12-16 1.44ns ± 0% 1.44ns ± 0% ~ (p=0.672 n=10+10)
MemmoveUnalignedDst/13-16 1.44ns ± 0% 1.44ns ± 0% ~ (p=0.435 n=10+10)
MemmoveUnalignedDst/14-16 1.44ns ± 0% 1.44ns ± 0% ~ (p=0.340 n=10+10)
MemmoveUnalignedDst/15-16 1.44ns ± 0% 1.44ns ± 0% ~ (p=0.911 n=10+9)
MemmoveUnalignedDst/16-16 1.44ns ± 0% 1.44ns ± 0% ~ (p=0.074 n=10+10)
MemmoveUnalignedDst/32-16 1.62ns ± 0% 1.63ns ± 0% ~ (p=0.059 n=10+10)
MemmoveUnalignedDst/64-16 1.65ns ± 0% 1.65ns ± 0% ~ (p=0.234 n=10+10)
MemmoveUnalignedDst/128-16 2.06ns ± 0% 2.06ns ± 0% ~ (p=0.709 n=10+9)
MemmoveUnalignedDst/256-16 3.69ns ± 0% 3.70ns ± 0% ~ (p=0.144 n=10+10)
MemmoveUnalignedDst/512-16 4.15ns ± 1% 4.14ns ± 0% ~ (p=0.778 n=10+8)
MemmoveUnalignedDst/1024-16 7.52ns ± 0% 7.53ns ± 1% ~ (p=0.650 n=9+9)
MemmoveUnalignedDst/2048-16 12.9ns ± 0% 12.9ns ± 1% ~ (p=0.548 n=8+8)
MemmoveUnalignedDst/4096-16 25.4ns ± 0% 25.4ns ± 0% ~ (p=0.947 n=9+9)
MemmoveUnalignedDstOverlap/32-16 4.08ns ± 0% 4.09ns ± 0% ~ (p=0.360 n=10+10)
MemmoveUnalignedDstOverlap/64-16 4.56ns ± 0% 4.56ns ± 0% ~ (p=0.705 n=10+9)
MemmoveUnalignedDstOverlap/128-16 4.67ns ± 0% 4.67ns ± 0% ~ (p=0.397 n=10+10)
MemmoveUnalignedDstOverlap/256-16 5.08ns ± 0% 5.08ns ± 0% ~ (p=0.159 n=10+9)
MemmoveUnalignedDstOverlap/512-16 8.45ns ± 5% 8.19ns ± 0% -3.10% (p=0.021 n=10+9)
MemmoveUnalignedDstOverlap/1024-16 9.55ns ± 0% 9.56ns ± 0% ~ (p=0.221 n=8+8)
MemmoveUnalignedDstOverlap/2048-16 14.0ns ± 0% 14.0ns ± 1% ~ (p=0.200 n=10+9)
MemmoveUnalignedDstOverlap/4096-16 26.5ns ± 0% 26.5ns ± 0% ~ (p=0.458 n=10+9)
MemmoveUnalignedSrc/0-16 1.02ns ± 1% 0.99ns ± 1% -2.67% (p=0.000 n=10+9)
MemmoveUnalignedSrc/1-16 1.13ns ± 0% 1.13ns ± 1% -0.25% (p=0.027 n=10+9)
MemmoveUnalignedSrc/2-16 1.13ns ± 1% 1.13ns ± 0% -0.28% (p=0.012 n=10+9)
MemmoveUnalignedSrc/3-16 1.24ns ± 1% 1.23ns ± 0% -0.25% (p=0.022 n=9+10)
MemmoveUnalignedSrc/4-16 1.24ns ± 0% 1.23ns ± 1% ~ (p=0.118 n=9+10)
MemmoveUnalignedSrc/5-16 1.34ns ± 0% 1.34ns ± 1% ~ (p=0.564 n=8+10)
MemmoveUnalignedSrc/6-16 1.34ns ± 0% 1.34ns ± 0% -0.39% (p=0.000 n=10+10)
MemmoveUnalignedSrc/7-16 1.34ns ± 0% 1.34ns ± 0% ~ (p=0.235 n=10+10)
MemmoveUnalignedSrc/8-16 1.34ns ± 0% 1.34ns ± 0% -0.37% (p=0.002 n=10+9)
MemmoveUnalignedSrc/9-16 1.44ns ± 0% 1.44ns ± 0% ~ (p=0.579 n=10+9)
MemmoveUnalignedSrc/10-16 1.44ns ± 0% 1.44ns ± 0% ~ (p=0.534 n=10+9)
MemmoveUnalignedSrc/11-16 1.44ns ± 0% 1.44ns ± 1% ~ (p=0.415 n=10+10)
MemmoveUnalignedSrc/12-16 1.44ns ± 0% 1.44ns ± 0% ~ (p=0.218 n=10+10)
MemmoveUnalignedSrc/13-16 1.44ns ± 0% 1.44ns ± 1% ~ (p=0.693 n=10+10)
MemmoveUnalignedSrc/14-16 1.44ns ± 0% 1.44ns ± 0% ~ (p=0.901 n=10+10)
MemmoveUnalignedSrc/15-16 1.44ns ± 0% 1.44ns ± 0% ~ (p=0.379 n=10+10)
MemmoveUnalignedSrc/16-16 1.44ns ± 1% 1.44ns ± 0% ~ (p=0.538 n=10+10)
MemmoveUnalignedSrc/32-16 1.60ns ± 1% 1.60ns ± 0% ~ (p=0.491 n=10+10)
MemmoveUnalignedSrc/64-16 1.65ns ± 0% 1.65ns ± 0% ~ (p=0.564 n=10+10)
MemmoveUnalignedSrc/128-16 2.09ns ± 0% 2.09ns ± 0% ~ (p=0.497 n=10+9)
MemmoveUnalignedSrc/256-16 2.70ns ± 0% 2.78ns ± 1% +2.81% (p=0.000 n=10+10)
MemmoveUnalignedSrc/512-16 4.31ns ± 0% 4.30ns ± 0% -0.26% (p=0.031 n=8+9)
MemmoveUnalignedSrc/1024-16 7.28ns ± 0% 7.21ns ± 1% -1.05% (p=0.000 n=8+10)
MemmoveUnalignedSrc/2048-16 13.0ns ± 0% 13.0ns ± 0% ~ (p=0.180 n=9+8)
MemmoveUnalignedSrc/4096-16 25.4ns ± 0% 25.3ns ± 1% ~ (p=0.054 n=10+10)
MemmoveUnalignedSrcOverlap/32-16 4.04ns ± 0% 4.06ns ± 0% +0.62% (p=0.000 n=9+10)
MemmoveUnalignedSrcOverlap/64-16 4.12ns ± 0% 4.12ns ± 0% ~ (p=0.421 n=10+10)
MemmoveUnalignedSrcOverlap/128-16 4.53ns ± 0% 4.52ns ± 0% ~ (p=0.251 n=10+10)
MemmoveUnalignedSrcOverlap/256-16 6.17ns ± 0% 6.15ns ± 0% -0.35% (p=0.000 n=10+9)
MemmoveUnalignedSrcOverlap/512-16 7.43ns ± 0% 7.44ns ± 0% ~ (p=0.524 n=9+8)
MemmoveUnalignedSrcOverlap/1024-16 8.94ns ± 0% 8.94ns ± 0% ~ (p=0.419 n=8+8)
MemmoveUnalignedSrcOverlap/2048-16 13.2ns ± 0% 14.5ns ±21% ~ (p=0.107 n=8+10)
MemmoveUnalignedSrcOverlap/4096-16 25.6ns ± 0% 25.6ns ± 1% ~ (p=0.650 n=9+9)
Memclr/5-16 0.86ns ± 1% 0.86ns ± 2% ~ (p=0.531 n=9+9)
Memclr/16-16 1.04ns ± 0% 1.04ns ± 0% +0.32% (p=0.013 n=9+10)
Memclr/64-16 1.23ns ± 0% 1.26ns ± 0% +2.28% (p=0.000 n=10+10)
Memclr/256-16 2.27ns ± 0% 2.27ns ± 0% ~ (p=0.127 n=10+10)
Memclr/4096-16 17.1ns ± 1% 17.3ns ± 0% +0.88% (p=0.000 n=10+10)
Memclr/65536-16 821ns ± 0% 822ns ± 0% ~ (p=0.516 n=10+10)
Memclr/1M-16 14.1µs ± 1% 14.0µs ± 1% ~ (p=0.516 n=10+10)
Memclr/4M-16 86.1µs ± 1% 85.9µs ± 0% ~ (p=0.123 n=10+10)
Memclr/8M-16 174µs ± 2% 173µs ± 0% ~ (p=0.408 n=10+8)
Memclr/16M-16 385µs ± 4% 387µs ± 0% ~ (p=0.173 n=10+8)
Memclr/64M-16 2.18ms ± 0% 2.19ms ± 0% ~ (p=0.113 n=10+9)
GoMemclr/5-16 0.82ns ± 0% 0.82ns ± 0% ~ (p=0.346 n=9+10)
GoMemclr/16-16 1.02ns ± 0% 1.02ns ± 0% +0.22% (p=0.003 n=10+8)
GoMemclr/64-16 1.14ns ± 0% 1.14ns ± 0% ~ (p=0.948 n=10+9)
GoMemclr/256-16 2.06ns ± 0% 2.06ns ± 0% ~ (p=0.868 n=10+10)
MemclrRange/1K_2K-16 457ns ± 0% 428ns ± 1% -6.38% (p=0.000 n=10+10)
MemclrRange/2K_8K-16 1.46µs ± 0% 1.46µs ± 0% ~ (p=0.700 n=10+10)
MemclrRange/4K_16K-16 1.16µs ± 0% 1.16µs ± 0% ~ (p=0.567 n=9+10)
MemclrRange/160K_228K-16 20.7µs ± 0% 20.7µs ± 0% ~ (p=0.160 n=10+10)
ClearFat7-16 0.38ns ± 5% 0.21ns ± 1% -45.79% (p=0.000 n=9+10)
ClearFat8-16 0.21ns ± 3% 0.12ns ± 2% -44.16% (p=0.000 n=8+9)
ClearFat11-16 0.35ns ± 3% 0.21ns ± 1% -40.46% (p=0.000 n=9+9)
ClearFat12-16 0.23ns ± 9% 0.21ns ± 1% -10.23% (p=0.000 n=10+9)
ClearFat13-16 0.22ns ± 6% 0.21ns ± 2% -6.53% (p=0.000 n=10+10)
ClearFat14-16 0.22ns ± 4% 0.21ns ± 1% -5.97% (p=0.000 n=10+10)
ClearFat15-16 0.22ns ± 4% 0.21ns ± 1% -6.96% (p=0.000 n=10+9)
ClearFat16-16 0.19ns ± 9% 0.12ns ± 6% -34.89% (p=0.000 n=9+10)
ClearFat24-16 0.23ns ± 6% 0.21ns ± 1% -10.26% (p=0.000 n=10+9)
ClearFat32-16 0.22ns ± 5% 0.21ns ± 2% -5.31% (p=0.000 n=10+10)
ClearFat40-16 0.34ns ± 4% 0.62ns ± 1% +83.00% (p=0.000 n=10+10)
ClearFat48-16 0.33ns ± 2% 0.41ns ± 0% +26.71% (p=0.000 n=10+10)
ClearFat56-16 0.41ns ± 1% 0.41ns ± 0% ~ (p=0.838 n=10+10)
ClearFat64-16 0.41ns ± 0% 0.41ns ± 0% ~ (p=0.178 n=10+8)
ClearFat72-16 0.82ns ± 0% 0.82ns ± 0% ~ (p=0.669 n=10+10)
ClearFat128-16 1.04ns ± 0% 1.04ns ± 0% ~ (p=0.679 n=10+10)
ClearFat256-16 1.86ns ± 0% 1.86ns ± 0% ~ (p=0.066 n=9+10)
ClearFat512-16 3.50ns ± 0% 3.50ns ± 0% ~ (p=0.626 n=10+10)
ClearFat1024-16 6.79ns ± 0% 6.79ns ± 0% ~ (p=0.986 n=10+10)
ClearFat1032-16 13.6ns ± 0% 13.6ns ± 0% +0.13% (p=0.044 n=10+10)
ClearFat1040-16 10.3ns ± 0% 10.3ns ± 0% ~ (p=0.175 n=10+9)
CopyFat7-16 0.37ns ±13% 0.25ns ± 1% -31.74% (p=0.000 n=10+9)
CopyFat8-16 0.17ns ± 1% 0.17ns ± 2% +1.35% (p=0.004 n=9+9)
CopyFat11-16 0.26ns ± 1% 0.30ns ± 3% +12.58% (p=0.000 n=9+10)
CopyFat12-16 0.28ns ± 2% 0.26ns ± 1% -5.66% (p=0.000 n=9+9)
CopyFat13-16 0.26ns ± 0% 0.28ns ± 4% +7.35% (p=0.000 n=8+10)
CopyFat14-16 0.29ns ± 6% 0.26ns ± 2% -10.46% (p=0.000 n=10+9)
CopyFat15-16 0.26ns ± 1% 0.30ns ± 6% +14.12% (p=0.000 n=8+10)
CopyFat16-16 0.21ns ± 1% 0.21ns ± 0% ~ (p=0.426 n=8+8)
CopyFat24-16 0.29ns ± 3% 0.25ns ± 1% -12.27% (p=0.000 n=9+10)
CopyFat32-16 0.26ns ± 4% 0.29ns ± 4% +11.71% (p=0.000 n=10+10)
CopyFat64-16 0.46ns ± 8% 0.42ns ± 1% -8.37% (p=0.002 n=10+10)
CopyFat72-16 0.82ns ± 0% 0.82ns ± 0% ~ (p=0.563 n=10+10)
CopyFat128-16 1.53ns ± 0% 1.54ns ± 0% +0.62% (p=0.000 n=10+10)
CopyFat256-16 2.68ns ± 0% 2.65ns ± 1% -1.23% (p=0.000 n=10+10)
CopyFat512-16 4.93ns ± 1% 5.19ns ± 3% +5.16% (p=0.000 n=9+9)
CopyFat520-16 6.99ns ± 0% 6.99ns ± 0% ~ (p=0.539 n=10+10)
CopyFat1024-16 11.5ns ± 1% 9.8ns ± 1% -14.98% (p=0.000 n=9+10)
CopyFat1032-16 13.6ns ± 0% 13.6ns ± 0% ~ (p=0.728 n=10+10)
CopyFat1040-16 11.0ns ± 0% 11.1ns ± 0% +0.53% (p=0.000 n=10+10)
Issue18740/2byte-16 10.1µs ± 0% 10.1µs ± 0% ~ (p=0.342 n=10+10)
Issue18740/4byte-16 2.34µs ± 0% 2.35µs ± 0% +0.30% (p=0.002 n=10+8)
Issue18740/8byte-16 1.28µs ± 0% 1.28µs ± 0% +0.32% (p=0.000 n=9+10)
Finalizer-16 345µs ± 1% 336µs ± 0% -2.55% (p=0.000 n=10+9)
FinalizerRun-16 450ns ± 3% 420ns ± 1% -6.65% (p=0.000 n=10+10)
PallocBitsSummarize/Unpacked00-16 2.88ns ± 0% 2.88ns ± 0% ~ (p=0.358 n=10+10)
PallocBitsSummarize/UnpackedFFFFFFFFFFFFFFFF-16 15.2ns ± 0% 15.2ns ± 0% ~ (p=0.925 n=10+10)
PallocBitsSummarize/UnpackedAA-16 16.4ns ± 0% 16.3ns ± 0% ~ (p=0.113 n=9+9)
PallocBitsSummarize/UnpackedAAAAAAAAAAAAAAAA-16 16.5ns ± 0% 16.6ns ± 0% ~ (p=0.238 n=10+10)
PallocBitsSummarize/Unpacked80000000AAAAAAAA-16 37.8ns ± 1% 36.4ns ± 0% -3.70% (p=0.000 n=10+9)
PallocBitsSummarize/UnpackedAAAAAAAA00000001-16 41.8ns ± 1% 39.9ns ± 0% -4.68% (p=0.000 n=9+10)
PallocBitsSummarize/UnpackedBBBBBBBBBBBBBBBB-16 18.3ns ± 0% 18.3ns ± 0% ~ (p=0.781 n=10+10)
PallocBitsSummarize/Unpacked80000000BBBBBBBB-16 38.8ns ± 1% 38.1ns ± 0% -1.78% (p=0.000 n=9+10)
PallocBitsSummarize/UnpackedBBBBBBBB00000001-16 37.5ns ± 0% 36.1ns ± 1% -3.88% (p=0.000 n=8+10)
PallocBitsSummarize/UnpackedCCCCCCCCCCCCCCCC-16 21.8ns ± 0% 21.9ns ± 0% +0.20% (p=0.018 n=10+9)
PallocBitsSummarize/Unpacked4444444444444444-16 21.8ns ± 0% 21.9ns ± 0% +0.20% (p=0.029 n=10+9)
PallocBitsSummarize/Unpacked4040404040404040-16 26.5ns ± 0% 26.5ns ± 0% -0.24% (p=0.001 n=9+10)
PallocBitsSummarize/Unpacked4000400040004000-16 33.4ns ± 1% 31.3ns ± 0% -6.20% (p=0.000 n=9+10)
PallocBitsSummarize/Unpacked1000404044CCAAFF-16 36.4ns ± 1% 35.9ns ± 0% -1.50% (p=0.000 n=10+10)
FindBitRange64/Pattern00Size2-16 0.34ns ± 1% 0.35ns ± 1% +3.80% (p=0.000 n=10+9)
FindBitRange64/Pattern00Size8-16 0.70ns ± 1% 0.70ns ± 0% -0.68% (p=0.000 n=10+10)
FindBitRange64/Pattern00Size32-16 0.70ns ± 1% 0.69ns ± 0% -0.86% (p=0.001 n=10+8)
FindBitRange64/PatternFFFFFFFFFFFFFFFFSize2-16 0.34ns ± 1% 0.35ns ± 1% +4.45% (p=0.000 n=9+8)
FindBitRange64/PatternFFFFFFFFFFFFFFFFSize8-16 1.54ns ± 0% 1.54ns ± 1% ~ (p=0.914 n=9+9)
FindBitRange64/PatternFFFFFFFFFFFFFFFFSize32-16 2.78ns ± 0% 2.78ns ± 0% ~ (p=0.295 n=9+10)
FindBitRange64/PatternAASize2-16 0.34ns ± 2% 0.35ns ± 2% +4.61% (p=0.000 n=10+10)
FindBitRange64/PatternAASize8-16 0.70ns ± 1% 0.70ns ± 1% -0.82% (p=0.005 n=10+10)
FindBitRange64/PatternAASize32-16 0.70ns ± 1% 0.70ns ± 0% -0.73% (p=0.003 n=10+9)
FindBitRange64/PatternAAAAAAAAAAAAAAAASize2-16 0.34ns ± 2% 0.35ns ± 2% +3.94% (p=0.000 n=10+10)
FindBitRange64/PatternAAAAAAAAAAAAAAAASize8-16 0.70ns ± 1% 0.70ns ± 1% -0.67% (p=0.025 n=10+10)
FindBitRange64/PatternAAAAAAAAAAAAAAAASize32-16 0.70ns ± 1% 0.70ns ± 1% ~ (p=0.118 n=9+10)
FindBitRange64/Pattern80000000AAAAAAAASize2-16 0.34ns ± 1% 0.35ns ± 2% +3.72% (p=0.000 n=10+9)
FindBitRange64/Pattern80000000AAAAAAAASize8-16 0.70ns ± 1% 0.70ns ± 0% ~ (p=0.102 n=10+10)
FindBitRange64/Pattern80000000AAAAAAAASize32-16 0.70ns ± 1% 0.70ns ± 1% -0.55% (p=0.011 n=10+10)
FindBitRange64/PatternAAAAAAAA00000001Size2-16 0.34ns ± 2% 0.35ns ± 1% +3.83% (p=0.000 n=10+9)
FindBitRange64/PatternAAAAAAAA00000001Size8-16 0.70ns ± 1% 0.70ns ± 1% ~ (p=0.065 n=10+10)
FindBitRange64/PatternAAAAAAAA00000001Size32-16 0.70ns ± 1% 0.70ns ± 1% -0.95% (p=0.002 n=10+10)
FindBitRange64/PatternBBBBBBBBBBBBBBBBSize2-16 0.34ns ± 0% 0.35ns ± 1% +4.12% (p=0.000 n=8+10)
FindBitRange64/PatternBBBBBBBBBBBBBBBBSize8-16 1.24ns ± 0% 1.23ns ± 0% -0.30% (p=0.002 n=10+9)
FindBitRange64/PatternBBBBBBBBBBBBBBBBSize32-16 1.24ns ± 0% 1.24ns ± 0% -0.17% (p=0.023 n=9+10)
FindBitRange64/Pattern80000000BBBBBBBBSize2-16 0.34ns ± 1% 0.35ns ± 2% +4.82% (p=0.000 n=9+10)
FindBitRange64/Pattern80000000BBBBBBBBSize8-16 1.24ns ± 1% 1.24ns ± 0% ~ (p=0.063 n=10+10)
FindBitRange64/Pattern80000000BBBBBBBBSize32-16 1.24ns ± 0% 1.24ns ± 0% ~ (p=0.164 n=9+10)
FindBitRange64/PatternBBBBBBBB00000001Size2-16 0.34ns ± 1% 0.35ns ± 1% +4.38% (p=0.000 n=8+10)
FindBitRange64/PatternBBBBBBBB00000001Size8-16 1.24ns ± 1% 1.24ns ± 0% ~ (p=0.052 n=10+10)
FindBitRange64/PatternBBBBBBBB00000001Size32-16 1.24ns ± 0% 1.23ns ± 0% -0.40% (p=0.000 n=10+10)
FindBitRange64/PatternCCCCCCCCCCCCCCCCSize2-16 0.34ns ± 0% 0.35ns ± 2% +3.96% (p=0.000 n=9+10)
FindBitRange64/PatternCCCCCCCCCCCCCCCCSize8-16 1.24ns ± 0% 1.23ns ± 0% -0.30% (p=0.000 n=10+9)
FindBitRange64/PatternCCCCCCCCCCCCCCCCSize32-16 1.24ns ± 0% 1.24ns ± 1% ~ (p=0.284 n=10+10)
FindBitRange64/Pattern4444444444444444Size2-16 0.34ns ± 1% 0.35ns ± 1% +3.91% (p=0.000 n=9+9)
FindBitRange64/Pattern4444444444444444Size8-16 0.70ns ± 1% 0.70ns ± 1% ~ (p=0.617 n=10+10)
FindBitRange64/Pattern4444444444444444Size32-16 0.70ns ± 1% 0.70ns ± 1% -0.60% (p=0.006 n=10+10)
FindBitRange64/Pattern4040404040404040Size2-16 0.34ns ± 2% 0.35ns ± 2% +3.67% (p=0.000 n=10+10)
FindBitRange64/Pattern4040404040404040Size8-16 0.70ns ± 2% 0.70ns ± 1% -0.87% (p=0.014 n=10+10)
FindBitRange64/Pattern4040404040404040Size32-16 0.70ns ± 1% 0.70ns ± 1% ~ (p=0.256 n=10+10)
FindBitRange64/Pattern4000400040004000Size2-16 0.34ns ± 2% 0.35ns ± 3% +4.71% (p=0.000 n=10+10)
FindBitRange64/Pattern4000400040004000Size8-16 0.70ns ± 1% 0.70ns ± 1% ~ (p=0.393 n=10+10)
FindBitRange64/Pattern4000400040004000Size32-16 0.70ns ± 1% 0.70ns ± 1% -0.86% (p=0.014 n=10+10)
NetpollBreak-16 1.49µs ± 1% 1.50µs ± 3% ~ (p=0.181 n=8+10)
Syscall-16 3.68ns ± 1% 3.66ns ± 2% ~ (p=0.148 n=10+10)
SyscallWork-16 5.15ns ± 1% 5.13ns ± 0% ~ (p=0.188 n=10+9)
SyscallExcess-16 3.89ns ± 2% 3.83ns ± 1% -1.52% (p=0.001 n=10+10)
SyscallExcessWork-16 5.34ns ± 1% 5.31ns ± 0% -0.64% (p=0.000 n=10+9)
PingPongHog-16 397ns ± 7% 394ns ±11% ~ (p=0.912 n=10+10)
StackGrowth-16 67.9ns ± 0% 68.8ns ± 0% +1.28% (p=0.000 n=10+8)
StackGrowthDeep-16 7.70µs ± 1% 8.48µs ± 2% +10.06% (p=0.000 n=9+10)
CreateGoroutines-16 124ns ± 1% 124ns ± 1% ~ (p=0.254 n=10+10)
CreateGoroutinesParallel-16 25.7ns ± 1% 27.6ns ± 2% +7.51% (p=0.000 n=10+10)
CreateGoroutinesCapture-16 823ns ± 1% 821ns ± 2% ~ (p=0.699 n=10+10)
CreateGoroutinesSingle-16 175ns ± 3% 172ns ± 3% -1.90% (p=0.011 n=10+10)
ClosureCall-16 0.11ns ± 7% 0.12ns ± 3% ~ (p=0.842 n=9+10)
WakeupParallelSpinning/0s-16 11.4µs ± 0% 11.4µs ± 0% ~ (p=0.325 n=9+10)
WakeupParallelSpinning/1µs-16 15.4µs ± 0% 15.4µs ± 1% ~ (p=0.955 n=10+10)
WakeupParallelSpinning/2µs-16 18.7µs ± 2% 18.9µs ± 2% ~ (p=0.052 n=10+10)
WakeupParallelSpinning/5µs-16 30.7µs ± 0% 30.7µs ± 0% -0.03% (p=0.003 n=10+10)
WakeupParallelSpinning/10µs-16 48.8µs ± 0% 48.8µs ± 0% ~ (p=0.670 n=10+10)
WakeupParallelSpinning/20µs-16 90.8µs ± 0% 90.8µs ± 0% -0.02% (p=0.004 n=10+10)
WakeupParallelSpinning/50µs-16 211µs ± 0% 211µs ± 0% ~ (p=0.194 n=10+10)
WakeupParallelSpinning/100µs-16 323µs ± 0% 323µs ± 0% ~ (p=1.000 n=10+9)
WakeupParallelSyscall/0s-16 118µs ± 0% 118µs ± 0% ~ (p=0.447 n=10+9)
WakeupParallelSyscall/1µs-16 119µs ± 2% 119µs ± 1% ~ (p=0.604 n=10+9)
WakeupParallelSyscall/2µs-16 120µs ± 1% 121µs ± 3% ~ (p=0.263 n=8+10)
WakeupParallelSyscall/5µs-16 126µs ± 2% 126µs ± 2% ~ (p=0.510 n=10+9)
WakeupParallelSyscall/10µs-16 136µs ± 1% 137µs ± 1% ~ (p=0.095 n=9+10)
WakeupParallelSyscall/20µs-16 156µs ± 2% 157µs ± 3% ~ (p=0.604 n=10+9)
WakeupParallelSyscall/50µs-16 221µs ± 1% 220µs ± 1% ~ (p=0.063 n=10+10)
WakeupParallelSyscall/100µs-16 326µs ± 0% 325µs ± 0% -0.26% (p=0.003 n=9+10)
Matmult-16 0.67ns ± 2% 0.66ns ± 2% ~ (p=0.256 n=10+10)
Fastrand-16 0.08ns ±11% 0.08ns ±13% ~ (p=0.661 n=9+10)
Fastrand64-16 0.08ns ±11% 0.08ns ± 6% ~ (p=0.631 n=10+10)
FastrandHashiter-16 1.76ns ± 1% 1.76ns ± 1% ~ (p=0.854 n=8+8)
Fastrandn/2-16 0.86ns ± 1% 0.86ns ± 1% +1.09% (p=0.000 n=10+9)
Fastrandn/3-16 0.85ns ± 1% 0.86ns ± 1% +1.23% (p=0.001 n=10+10)
Fastrandn/4-16 0.85ns ± 1% 0.87ns ± 2% +1.60% (p=0.000 n=10+10)
Fastrandn/5-16 0.85ns ± 1% 0.86ns ± 1% +1.05% (p=0.000 n=10+10)
IfaceCmp100-16 46.6ns ± 0% 46.1ns ± 0% -1.18% (p=0.000 n=10+10)
IfaceCmpNil100-16 26.8ns ± 0% 26.8ns ± 0% ~ (p=0.777 n=10+8)
EfaceCmpDiff-16 132ns ± 0% 130ns ± 0% -0.95% (p=0.000 n=10+9)
EfaceCmpDiffIndirect-16 209ns ± 0% 211ns ± 0% +1.14% (p=0.000 n=10+9)
Defer-16 3.40ns ± 1% 3.04ns ± 0% -10.67% (p=0.000 n=10+10)
Defer10-16 29.4ns ± 2% 27.2ns ± 3% -7.26% (p=0.000 n=10+10)
DeferMany-16 110ns ± 6% 113ns ± 2% +3.45% (p=0.017 n=9+9)
PanicRecover-16 67.6ns ± 0% 67.7ns ± 2% ~ (p=0.436 n=9+9)
GoroutineProfile/small-nil/idle-16 3.90µs ± 4% 3.86µs ± 2% ~ (p=0.305 n=10+9)
GoroutineProfile/small-nil/loaded-16 4.82µs ± 6% 4.82µs ± 4% ~…
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Doing a sweep of the Go 1.21 milestone. Is there anything left to do here? Also, given that this for performance it probably shouldn't be in the Go 1.21 milestone if there is. Moving it to Backlog for now. Please comment if you plan to work on this in Go 1.22 and we can push it there. Thanks! |
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I'm working on a patch for inlining known-size memclrNoHeapPointers calls and replacing them with an OpZero.
The inlining significantly speeds up clearing, but for some clear size, AMD64's OpZero is actually slower than calling memcrlNoHeapPointers,
see:
Intel Alder Lake 12600k:
name old time/op new time/op delta
MemclrKnownSize1-16 0.59ns ± 3% 0.38ns ± 6% -36.00% (p=0.000 n=19+18)
MemclrKnownSize2-16 0.57ns ± 1% 0.19ns ± 5% -66.27% (p=0.000 n=19+19)
MemclrKnownSize4-16 0.66ns ± 2% 0.36ns ±21% -45.12% (p=0.000 n=19+20)
MemclrKnownSize8-16 0.74ns ± 1% 0.30ns ±26% -59.81% (p=0.000 n=18+20)
MemclrKnownSize16-16 1.00ns ± 7% 0.21ns ± 8% -79.51% (p=0.000 n=20+19)
MemclrKnownSize32-16 0.95ns ± 1% 0.40ns ± 1% -57.61% (p=0.000 n=20+18)
MemclrKnownSize64-16 1.20ns ± 2% 0.41ns ± 0% -65.82% (p=0.000 n=20+18)
MemclrKnownSize112-16 1.27ns ± 2% 1.03ns ± 0% -19.35% (p=0.000 n=20+18)
MemclrKnownSize128-16 1.34ns ± 2% 1.03ns ± 0% -23.02% (p=0.000 n=20+20)
MemclrKnownSize192-16 1.92ns ± 2% 1.44ns ± 0% -24.89% (p=0.000 n=20+16)
MemclrKnownSize248-16 2.77ns ± 1% 3.29ns ± 0% +18.81% (p=0.000 n=20+16)
MemclrKnownSize256-16 1.92ns ± 1% 1.86ns ± 0% -3.49% (p=0.000 n=19+15)
MemclrKnownSize512-16 2.81ns ± 2% 3.49ns ± 0% +24.15% (p=0.000 n=20+17)
MemclrKnownSize1024-16 4.02ns ± 1% 6.78ns ± 0% +68.44% (p=0.000 n=20+18)
MemclrKnownSize4096-16 17.2ns ± 2% 14.4ns ± 0% -16.73% (p=0.000 n=20+17)
MemclrKnownSize512KiB-16 6.71µs ± 1% 6.52µs ± 0% -2.85% (p=0.000 n=20+18)
[Geo mean] 2.60ns 1.71ns -34.06%
name old speed new speed delta
MemclrKnownSize1-16 1.71GB/s ± 3% 2.67GB/s ± 6% +56.39% (p=0.000 n=19+18)
MemclrKnownSize2-16 3.52GB/s ± 2% 10.43GB/s ± 6% +196.04% (p=0.000 n=20+20)
MemclrKnownSize4-16 6.06GB/s ± 1% 10.83GB/s ±11% +78.63% (p=0.000 n=19+18)
MemclrKnownSize8-16 10.7GB/s ± 1% 27.0GB/s ±21% +151.49% (p=0.000 n=18+20)
MemclrKnownSize16-16 16.0GB/s ± 8% 78.1GB/s ± 7% +387.24% (p=0.000 n=20+19)
MemclrKnownSize32-16 33.6GB/s ± 1% 79.4GB/s ± 1% +135.89% (p=0.000 n=20+18)
MemclrKnownSize64-16 53.3GB/s ± 2% 155.9GB/s ± 0% +192.58% (p=0.000 n=20+18)
MemclrKnownSize112-16 88.0GB/s ± 2% 109.1GB/s ± 0% +23.97% (p=0.000 n=20+18)
MemclrKnownSize128-16 95.3GB/s ± 2% 123.8GB/s ± 0% +29.88% (p=0.000 n=20+20)
MemclrKnownSize192-16 100GB/s ± 2% 133GB/s ± 0% +33.12% (p=0.000 n=20+17)
MemclrKnownSize248-16 89.7GB/s ± 1% 75.5GB/s ± 0% -15.84% (p=0.000 n=20+19)
MemclrKnownSize256-16 133GB/s ± 1% 138GB/s ± 0% +3.61% (p=0.000 n=19+14)
MemclrKnownSize512-16 182GB/s ± 2% 147GB/s ± 0% -19.46% (p=0.000 n=20+17)
MemclrKnownSize1024-16 254GB/s ± 1% 151GB/s ± 0% -40.64% (p=0.000 n=20+18)
MemclrKnownSize4096-16 237GB/s ± 2% 285GB/s ± 0% +20.09% (p=0.000 n=20+17)
MemclrKnownSize512KiB-16 78.2GB/s ± 1% 80.4GB/s ± 0% +2.93% (p=0.000 n=20+18)
[Geo mean] 42.1GB/s 63.8GB/s +51.53%
This problem doesn't appear on arm64 (M1 Pro):
name old time/op new time/op delta
MemclrKnownSize1-10 2.03ns ± 0% 0.31ns ± 0% -84.69% (p=0.000 n=18+19)
MemclrKnownSize2-10 1.97ns ± 0% 0.31ns ± 0% -84.19% (p=0.000 n=12+19)
MemclrKnownSize4-10 2.02ns ± 0% 0.31ns ± 0% -84.56% (p=0.000 n=12+20)
MemclrKnownSize8-10 2.02ns ± 0% 0.31ns ± 0% -84.59% (p=0.000 n=14+19)
MemclrKnownSize16-10 2.15ns ± 0% 0.31ns ± 0% -85.50% (p=0.000 n=18+19)
MemclrKnownSize32-10 2.48ns ± 0% 0.31ns ± 0% -87.48% (p=0.000 n=20+19)
MemclrKnownSize64-10 1.93ns ± 0% 0.62ns ± 0% -67.88% (p=0.000 n=20+19)
MemclrKnownSize112-10 2.48ns ± 0% 1.80ns ± 0% -27.74% (p=0.000 n=19+20)
MemclrKnownSize128-10 10.0ns ±112% 2.0ns ± 0% -79.76% (p=0.000 n=18+17)
MemclrKnownSize192-10 27.4ns ±103% 2.6ns ± 0% -90.38% (p=0.000 n=16+19)
MemclrKnownSize248-10 9.67ns ±43% 3.26ns ± 0% -66.29% (p=0.000 n=19+19)
MemclrKnownSize256-10 85.4ns ±148% 3.3ns ± 0% -96.18% (p=0.000 n=20+20)
MemclrKnownSize512-10 223ns ±54% 6ns ± 0% -97.42% (p=0.000 n=18+20)
MemclrKnownSize1024-10 216ns ±26% 11ns ± 0% -95.00% (p=0.000 n=18+15)
MemclrKnownSize4096-10 265ns ± 2% 88ns ± 0% -66.84% (p=0.000 n=19+17)
MemclrKnownSize512KiB-10 9.91µs ± 1% 10.23µs ± 2% +3.14% (p=0.000 n=19+19)
[Geo mean] 15.6ns 2.5ns -83.62%
name old speed new speed delta
MemclrKnownSize1-10 493MB/s ± 0% 3216MB/s ± 0% +553.04% (p=0.000 n=18+19)
MemclrKnownSize2-10 1.02GB/s ± 0% 6.43GB/s ± 0% +532.33% (p=0.000 n=16+19)
MemclrKnownSize4-10 1.99GB/s ± 0% 12.86GB/s ± 0% +547.67% (p=0.000 n=18+20)
MemclrKnownSize8-10 3.96GB/s ± 0% 25.72GB/s ± 0% +548.81% (p=0.000 n=19+19)
MemclrKnownSize16-10 7.46GB/s ± 0% 51.43GB/s ± 0% +589.72% (p=0.000 n=20+19)
MemclrKnownSize32-10 12.9GB/s ± 0% 102.9GB/s ± 0% +698.60% (p=0.000 n=20+18)
MemclrKnownSize64-10 33.1GB/s ± 0% 103.0GB/s ± 0% +211.34% (p=0.000 n=19+19)
MemclrKnownSize112-10 45.1GB/s ± 0% 62.4GB/s ± 0% +38.38% (p=0.000 n=19+20)
MemclrKnownSize128-10 13.3GB/s ±107% 63.5GB/s ± 0% +378.03% (p=0.000 n=19+18)
MemclrKnownSize192-10 6.97GB/s ±139% 72.72GB/s ± 0% +943.44% (p=0.000 n=19+19)
MemclrKnownSize248-10 25.9GB/s ±46% 76.1GB/s ± 0% +194.16% (p=0.000 n=20+17)
MemclrKnownSize256-10 8.64GB/s ±196% 78.51GB/s ± 0% +808.19% (p=0.000 n=20+20)
MemclrKnownSize512-10 2.33GB/s ±86% 89.13GB/s ± 0% +3719.50% (p=0.000 n=17+20)
MemclrKnownSize1024-10 4.85GB/s ±32% 94.93GB/s ± 0% +1856.74% (p=0.000 n=18+19)
MemclrKnownSize4096-10 15.4GB/s ± 2% 46.6GB/s ± 0% +201.55% (p=0.000 n=19+18)
MemclrKnownSize512KiB-10 52.9GB/s ± 1% 51.3GB/s ± 2% -3.04% (p=0.000 n=19+19)
[Geo mean] 7.54GB/s 42.86GB/s +468.76%
It seems that either: on AMD64 OpZero could be improved or for some clears we could use memcrlNoHeapPointers instead.
I'll send the patch soon. Creating this issue so that it can be linked from the change.
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