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| author | Michael Kerrisk <mtk.manpages@gmail.com> | 2016-11-27 14:44:24 +0100 |
|---|---|---|
| committer | Michael Kerrisk <mtk.manpages@gmail.com> | 2016-11-27 14:44:24 +0100 |
| commit | 4ad9a70616f3078871cbd79b023f1d7e203d4dbf (patch) | |
| tree | eb0be1493818c29bbd37c277b7a5eaf7611e1e8a | |
| parent | d84631b3252bbb2b76be17525f757c3e13d4bd3d (diff) | |
| download | man-pages-4ad9a70616f3078871cbd79b023f1d7e203d4dbf.tar.gz | |
cgroups.7: Add details on 'cpu' CFS bandwidth control
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
| -rw-r--r-- | man7/cgroups.7 | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/man7/cgroups.7 b/man7/cgroups.7 index 324eba0a94..225821039f 100644 --- a/man7/cgroups.7 +++ b/man7/cgroups.7 @@ -241,7 +241,17 @@ kernel configuration option. Cgroups can be guaranteed a minimum number of "CPU shares" when a system is busy. This does not limit a cgroup's CPU usage if the CPUs are not busy. - +For further information, see +.IR Documentation/scheduler/sched-design-CFS.txt . + +In Linux 3.2, +this controller was extended to provide CPU "bandwidth" control. +If the kernel is configured with +.BR COONFIG_CFS_BANDWIDTH , +then within each scheduling period +(defined via a file in the cgroup directory), it is possible to define +an upper limit on the CPU time allocated to the processes in a cgroup. +This upper limit applies even if there is no other competition for the CPU. Further information can be found in the kernel source file .IR Documentation/scheduler/sched\-bwc.txt . .TP |