cgexec is a small program that executes a command in a cgroup. This allows limits to be set on I/O, Memory and CPU usage in a much more fine fine grained way compared with the nice and ionice commands.
It requires Linux Control Groups v2 to be enabled and mounted on /sys/fs/cgroup
Usage: -i <io.weight> -c <cpu.weight> -m <memory.high> -M <memory.max> -g <group> <cmd>
| option | value |
|---|---|
| cpu.weight | 0-10000, default 50. |
| io.weight | 0-10000, default 50. |
| memory.high | 0-max, default 'max'. Soft limit. |
| memory.max | 0-max, default 'max'. Hard limit. |
| group | existing cgroup to attach to (not implemented). Default 'cmd.xxxx' temportary group. |
| cmd | command to execute. |
Information about Linux CGroups can be found in the Kernel documentation: https://www.kernel.org/doc/Documentation/cgroup-v2.txt