安装stress来测试资源限制
package main
import (
"fmt"
"io/ioutil"
"os"
"os/exec"
"path"
"strconv"
"syscall"
)
const root = "/sys/fs/cgroup/memory"
const self = "/proc/self/exe"
func main() {
if os.Args[0] == self {
cmd := exec.Command("sh", "-c", "stress --vm-bytes 400m --vm-keep -m 1")
cmd.SysProcAttr = &syscall.SysProcAttr{}
cmd.Stdin = os.Stdin
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
if err := cmd.Run(); err != nil {
fmt.Println(err)
}
os.Exit(1)
}
cmd := exec.Command(self)
cmd.Stdin = os.Stdin
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
if err := cmd.Start(); err != nil {
fmt.Println(err)
os.Exit(1)
} else {
file := path.Join(root, "mtt1")
os.Mkdir(file, 0755)
ioutil.WriteFile(file, []byte(strconv.Itoa(cmd.Process.Pid)), 0644)
}
cmd.Process.Wait()
}
