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3.2.3. Example Usage
Example 3.2. Limiting CPU access
The following examples assume you have an existing hierarchy of cgroups configured and the
cpu subsystem mounted on your system:
- To allow one cgroup to use 25% of a single CPU and a different cgroup to use 75% of that same CPU, use the following commands:
~]#
echo 250 > /cgroup/cpu/blue/cpu.shares~]#echo 750 > /cgroup/cpu/red/cpu.shares - To limit a cgroup to fully utilize a single CPU, use the following commands:
~]#
echo 10000 > /cgroup/cpu/red/cpu.cfs_quota_us~]#echo 10000 > /cgroup/cpu/red/cpu.cfs_period_us - To limit a cgroup to utilize 10% of a single CPU, use the following commands:
~]#
echo 10000 > /cgroup/cpu/red/cpu.cfs_quota_us~]#echo 100000 > /cgroup/cpu/red/cpu.cfs_period_us - On a multi-core system, to allow a cgroup to fully utilize two CPU cores, use the following commands:
~]#
echo 200000 > /cgroup/cpu/red/cpu.cfs_quota_us~]#echo 100000 > /cgroup/cpu/red/cpu.cfs_period_us
