When I call process.Percent，memory increase slowly

[frogh1]

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]
• 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]

yes, facing the same issue

[shirou]

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.