[root@bogon ~]# mkdir /sys/fs/cgroup/cpu/yz/
[root@bogon ~]# chown yz:yz -R /sys/fs/cgroup/cpu/yz/
[root@bogon ~]# cd /sys/fs/cgroup/cpu/yz/
[root@bogon yz]# cat cpu.cfs_period_us
100000
[root@bogon yz]# echo 50000 > cpu.cfs_quota_us