Use the top and ps commands to check that the process uses 221.6+G of memory, but check inuse_heap through the go tool pprof command to show that 179.1G is used. How to check the usage of another 40+G of memory

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

$ go version
go version go1.14.3 linux/amd64

Does this issue reproduce with the latest release?

yes

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

$ go env
GO111MODULE="auto"
GOARCH="amd64"
GOBIN=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOINSECURE=""
GOOS="linux"
GOTMPDIR=""
GOTOOLDIR="/opt/go/go/pkg/tool/linux_amd64"
GCCGO="gccgo"
AR="ar"
CC="gcc"
CXX="g++"
CGO_ENABLED="1"
GOMOD=""
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build634190532=/tmp/go-build -gno-record-gcc-switches"

What did you do?

I set GODEBUG=madvdontneed=1 in the process startup, but it has no effect.

$ cat /proc/sys/vm/overcommit_memory
0
$ cat /proc/sys/vm/overcommit_ratio
50
$ ulimit -v
unlimited

What did you expect to see?

What did you see instead?