What version of Go are you using (go version)?

$ go version
go version go1.19 darwin/arm64

Does this issue reproduce with the latest release?

yes

What operating system and processor architecture are you using (go env)?

$ perf script --header
# arch : x86_64
# nrcpus online : 104
# nrcpus avail : 104
# cpudesc : Intel(R) Xeon(R) Platinum 8269CY CPU @ 2.50GHz
# cpuid : GenuineIntel,6,85,7

What did you do?

running my program

What did you expect to see?

lower system cpu usage.

What did you see instead?

system cpu cost about 30 core.
user cpu cost is only 60 core!

i use perf to record callstack and tran it to pprof.

the pprof top means that function native_queued_spin_lock_slowpath cost most cpu.

hear is the pprof flamegraph, seems that runtime.freespan is the reason.

the memory usage of my machine.

the pprof file:
cpu.pprof.gz