mirror of https://github.com/k3s-io/k3s
147520fcf4
Automatic merge from submit-queue (batch tested with PRs 63437, 68081). If you want to cherry-pick this change to another branch, please follow the instructions here: https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md. fix #51135 make CFS quota period configurable **What this PR does / why we need it**: This PR makes it possible for users to change CFS quota period from the default 100ms to some other value between 1µs and 1s. #51135 shows that multiple production users have serious issues running reasonable workloads in kubernetes. The latency added by the 100ms CFS quota period is adding way too much time. **Which issue(s) this PR fixes**: Fixes #51135 **Special notes for your reviewer**: - 5ms is used by user experience https://github.com/kubernetes/kubernetes/issues/51135#issuecomment-384908627 - Latency added caused by CFS 100ms is shown at https://github.com/kubernetes/kubernetes/issues/51135#issuecomment-373454012 - explanation why we should not disable limits https://github.com/kubernetes/kubernetes/issues/51135#issuecomment-385346661 - agreement found at kubecon EU 2018: https://github.com/kubernetes/kubernetes/issues/51135#issuecomment-386623964 **Release note**: ```release-note Adds a kubelet parameter and config option to change CFS quota period from the default 100ms to some other value between 1µs and 1s. This was done to improve response latencies for workloads running in clusters with guaranteed and burstable QoS classes. ``` |
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