cgroups

# service cgconfig start   #开启cgroups服务
# chkconfig cgconfig on   #开启启动

1. test cpu control
# a shell script costing high cpu
x=0
while [ True ];do
    x=$x+1
done;

# mkdir -p /cgroup/cpu/foo/   #新建一个控制组foo
# echo 50000 > /cgroup/cpu/foo/cpu.cfs_quota_us  #将cpu.cfs_quota_us设为50000，相对于cpu.cfs_period_us的100000是50%
# echo $pid > /cgroup/cpu/foo/tasks

2. test memory control
# a shell script costing high memory
x="a"
while [ True ];do
    x=$x$x
done;

# mkdir -p /cgroup/memory/foo
# echo 1048576 >  /cgroup/memory/foo/memory.limit_in_bytes   #分配1MB的内存给这个控制组
# echo $pid > /cgroup/memory/foo/tasks 

3. test blkio control
# dd if=/dev/sda of=/dev/null &
# mkdir -p /cgroup/blkio/foo

# echo '8:0   1048576' >  /cgroup/blkio/foo/blkio.throttle.read_bps_device
#8:0对应主设备号和副设备号，可以通过ls -l /dev/sda查看
# echo $pid > /cgroup/blkio/foo/tasks