When I call process.Percent，memory increase slowly

frogh1 commented 11 months ago

Describe the bug When I call process.Percent，memory increases slowly

To Reproduce

package main

import (
    "fmt"
    "os"
    "strconv"
    "time"

    "github.com/shirou/gopsutil/v3/process"
)

func main() {

    if len(os.Args) < 1 {
        fmt.Println("exec pid")
        return
    }
    pid, err := strconv.Atoi(os.Args[1])
    if err != nil {
        fmt.Println("pid should int")
        return
    }
    p, err := process.NewProcess(int32(pid))
    if err != nil {
        fmt.Println(err)
        return
    }

    for {
        cpu, _ = p.Percent(1 * time.Second)
        fmt.Printf("cpu:%.2f\n", cpu)
    }

}

Environment (please complete the following information):

[ ] Windows: [paste the result of ver]
[ ] Linux: [paste contents of /etc/os-release and the result of uname -a]
[x] Mac OS: [paste the result of sw_vers and uname -a
[ ] FreeBSD: [paste the result of freebsd-version -k -r -u and uname -a]
[ ] OpenBSD: [paste the result of uname -a]

sw_vers

ProductName:    macOS
ProductVersion: 12.7
BuildVersion:   21G816

Additional context

GO111MODULE="on"
GOARCH="amd64"
GOBIN=""
GOCACHE="/Users/mf/Library/Caches/go-build"
GOENV="/Users/mf/Library/Application Support/go/env"
GOEXE=""
GOEXPERIMENT=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="darwin"
GOINSECURE=""
GOMODCACHE="/Users/mf/go/pkg/mod"
GONOPROXY=""
GONOSUMDB=""
GOOS="darwin"
GOPATH="/Users/mf/go"
GOPRIVATE=""
GOPROXY="https://goproxy.cn"
GOROOT="/usr/local/go"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/usr/local/go/pkg/tool/darwin_amd64"
GOVCS=""
GOVERSION="go1.20.10"
GCCGO="gccgo"
GOAMD64="v1"
AR="ar"
CC="clang"
CXX="clang++"
CGO_ENABLED="1"
GOMOD="/dev/null"
GOWORK=""
CGO_CFLAGS="-O2 -g"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-O2 -g"
CGO_FFLAGS="-O2 -g"
CGO_LDFLAGS="-O2 -g"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -arch x86_64 -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=/var/folders/bh/sk4mvy391bn6rndd7q83wxkm0000gp/T/go-build1363534723=/tmp/go-build -gno-record-gcc-switches -fno-common"

vbanu-theja commented 4 months ago

yes, facing the same issue

shirou commented 4 months ago

When I run your code for 10 minutes, it does not increase memory.

Linux 5.4.0-174-generic
go version go1.21.4 linux/amd64

Could you get a memory profile? Thank you.

shirou / gopsutil

When I call process.Percent，memory increase slowly #1541