diff options
| author | OpenShift Merge Robot <openshift-merge-robot@users.noreply.github.com> | 2020-10-27 13:26:53 -0400 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2020-10-27 13:26:53 -0400 |
| commit | 95f3ec7b08c9115d50358086f6fa7e683c63a522 (patch) | |
| tree | e98caccb13d05fdef73709d76b9624be743aec0e /docs/source/markdown/podman-create.1.md | |
| parent | 434de069fe83b6a928cd6c741c9337219cf09fe5 (diff) | |
| parent | fa73b929e06521b176ab6a569e5b3d408440956f (diff) | |
| download | podman-95f3ec7b08c9115d50358086f6fa7e683c63a522.tar.gz podman-95f3ec7b08c9115d50358086f6fa7e683c63a522.tar.bz2 podman-95f3ec7b08c9115d50358086f6fa7e683c63a522.zip | |
Merge pull request #8133 from xordspar0/cpu-limit-details
[CI:DOCS] Add more details about how CPU limits work
Diffstat (limited to 'docs/source/markdown/podman-create.1.md')
| -rw-r--r-- | docs/source/markdown/podman-create.1.md | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/docs/source/markdown/podman-create.1.md b/docs/source/markdown/podman-create.1.md index a5622e0df..c7e00f594 100644 --- a/docs/source/markdown/podman-create.1.md +++ b/docs/source/markdown/podman-create.1.md @@ -103,9 +103,10 @@ Write the pid of the `conmon` process to a file. `conmon` runs in a separate pro **--cpu-period**=*limit* -Limit the CPU CFS (Completely Fair Scheduler) period - -Limit the container's CPU usage. This flag tell the kernel to restrict the container's CPU usage to the period you specify. +Set the CPU period for the Completely Fair Scheduler (CFS), which is a +duration in microseconds. Once the container's CPU quota is used up, it will +not be scheduled to run until the current period ends. Defaults to 100000 +microseconds. On some systems, changing the CPU limits may not be allowed for non-root users. For more details, see @@ -113,11 +114,12 @@ https://github.com/containers/podman/blob/master/troubleshooting.md#26-running-c **--cpu-quota**=*limit* -Limit the CPU CFS (Completely Fair Scheduler) quota +Limit the CPU Completely Fair Scheduler (CFS) quota. Limit the container's CPU usage. By default, containers run with the full -CPU resource. This flag tell the kernel to restrict the container's CPU usage -to the quota you specify. +CPU resource. The limit is a number in microseconds. If you provide a number, +the container will be allowed to use that much CPU time until the CPU period +ends (controllable via **--cpu-period**). On some systems, changing the CPU limits may not be allowed for non-root users. For more details, see @@ -177,7 +179,9 @@ PID container CPU CPU share **--cpus**=*number* -Number of CPUs. The default is *0.0* which means no limit. +Number of CPUs. The default is *0.0* which means no limit. This is shorthand +for **--cpu-period** and **--cpu-quota**, so you may only set either +**--cpus** or **--cpu-period** and **--cpu-quota**. On some systems, changing the CPU limits may not be allowed for non-root users. For more details, see |