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fix #51135 make CFS quota period configurable, adds a cli flag and config option to kubelet to be able to set cpu.cfs_period and defaults to 100ms as before.

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It requires to enable feature gate CustomCPUCFSQuotaPeriod.

Signed-off-by: Sandor Szücs <sandor.szuecs@zalando.de>
This commit is contained in:
Sandor Szücs
2018-05-04 17:25:22 +02:00
parent 380931aca7
commit 588d2808b7
32 changed files with 627 additions and 32 deletions
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5
pkg/kubelet/cm/pod_container_manager_linux.go
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@@ -51,6 +51,9 @@ type podContainerManagerImpl struct {
podPidsLimit int64
// enforceCPULimits controls whether cfs quota is enforced or not
enforceCPULimits bool
// cpuCFSQuotaPeriod is the cfs period value, cfs_period_us, setting per
// node for all containers in usec
cpuCFSQuotaPeriod uint64
}
// Make sure that podContainerManagerImpl implements the PodContainerManager interface
@@ -81,7 +84,7 @@ func (m *podContainerManagerImpl) EnsureExists(pod *v1.Pod) error {
// Create the pod container
containerConfig := &CgroupConfig{
Name: podContainerName,
ResourceParameters: ResourceConfigForPod(pod, m.enforceCPULimits),
ResourceParameters: ResourceConfigForPod(pod, m.enforceCPULimits, m.cpuCFSQuotaPeriod),
}
if utilfeature.DefaultFeatureGate.Enabled(kubefeatures.SupportPodPidsLimit) && m.podPidsLimit > 0 {
containerConfig.ResourceParameters.PodPidsLimit = &m.podPidsLimit