Linux使用 cgroup限制进程cpu利用率的方法

June 06, 2025 | 0 Minute Read

挂载cgroup子系统（若未挂载）：

mount -t cgroup2 none /sys/fs/cgroup
chmod o+wt /sys/fs/cgroup

mkdir /sys/fs/cgroup/mygroup
echo "+cpu" > /sys/fs/cgroup/cgroup.subtree_control
echo "+memory" > /sys/fs/cgroup/cgroup.subtree_control

echo "50000 100000" > /sys/fs/cgroup/mygroup/cpu.max

echo $((512 * 1024 * 1024)) > /sys/fs/cgroup/mygroup/memory.max

nice -n 19 your_command

PID=$(pidof your_command)
echo $PID  > /sys/fs/cgroup/mygroup/cgroup.procs

cat /sys/fs/cgroup/mygroup/cpu.stat
cat /sys/fs/cgroup/mygroup/memory.current

rmdir /sys/fs/cgroup/mygroup