Function SetOOMScore

pkg/sys/oom_linux.go:48–65

SetOOMScore sets the oom score for the provided pid

(pid, score int)

// SetOOMScore sets the oom score for the provided pid
func SetOOMScore(pid, score int) error {
	if score > OOMScoreAdjMax || score < OOMScoreAdjMin {
		return fmt.Errorf("value out of range (%d): OOM score must be between %d and %d", score, OOMScoreAdjMin, OOMScoreAdjMax)
	}
	path := fmt.Sprintf("/proc/%d/oom_score_adj", pid)
	f, err := os.OpenFile(path, os.O_WRONLY, 0)
	if err != nil {
		return err
	}
	defer f.Close()
	if _, err = f.WriteString(strconv.Itoa(score)); err != nil {
		if os.IsPermission(err) && (!runningPrivileged() || userns.RunningInUserNS()) {
			return nil
		}
		return err
	}
	return nil
}

// GetOOMScoreAdj gets the oom score for a process. It returns 0 (zero) if either
// no oom score is set, or a sore is set to 0.