Both hosts have 8 cores and 16GB RAM. 在2022年4月30日星期六 UTC+8 00:19:44<garenchan> 写道：
> *What version of Go are you using (go version)?* > > $ go version > go version go1.17.6 linux/amd64 > > *Does this issue reproduce with the latest release?* > > uncertain > > *What operating system and processor architecture are you using (go env)?* > > $ go env > GO111MODULE="on" > GOARCH="amd64" > GOBIN="" > GOCACHE="/root/.cache/go-build" > GOENV="/root/.config/go/env" > GOEXE="" > GOEXPERIMENT="" > GOFLAGS="" > GOHOSTARCH="amd64" > GOHOSTOS="linux" > GOINSECURE="" > GOMODCACHE="/root/go/pkg/mod" > GONOPROXY="" > GONOSUMDB="" > GOOS="linux" > GOPATH="/root/go" > GOPRIVATE="" > GOPROXY="" > GOROOT="/home/go" > GOSUMDB="off" > GOTMPDIR="" > GOTOOLDIR="/home/go/pkg/tool/linux_amd64" > GOVCS="" > GOVERSION="go1.17.6" > GCCGO="gccgo" > AR="ar" > CC="gcc" > CXX="g++" > CGO_ENABLED="1" > GOMOD="/home/demo/go.mod" > 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-build4023324410=/tmp/go-build > -gno-record-gcc-switches" > > *What did you do?* > > I encountered a memory problem with the GO program, see here for details.( > https://stackoverflow.com/questions/71994609/memory-footprint-of-the-same-program-varies-greatly-in-two-similar-environments > ) > > In order to simplify the analysis, I wrote a simple program to test. > > ```go > package main > > import ( > "time" > ) > > func main() { > time.Sleep(60*time.Second) > } > ``` > > > - I compiled it into binary file on a linux host `host1` with kernel > 4.18. Then I run it on `host1` and the process takes up close to 5MB RSS. > - I then copy the binary file to another host `host2` with kernel > 4.18. I also ran it on `host2`, but this time the process took up less > than > 1MB RSS. > - I repeated the test many times and observed the same thing. > > > ``` > $ uname -a > Linux host1 4.18.0 #1 SMP Wed Nov 10 20:46:19 CST 2021 x86_64 x86_64 > x86_64 GNU/Linux > > $ uname -a > Linux host2 4.18.0 #1 SMP Fri May 8 10:59:10 UTC 2021 x86_64 x86_64 x86_64 > GNU/Linux > ``` > > Why is memory footprint of the same program in similar environments so > different? What factors might be contributing to this problem? > > *What did you expect to see?* > > I would expect to see the memory footprint of the same program in similar > environments be close. I look forward to your answers. Thank you very much. > -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/golang-nuts/e7c642a3-08f5-4cf5-a6b0-cc0f55f3aab8n%40googlegroups.com.
