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Merge pull request #41621 from derekwaynecarr/best-effort-qos-shares

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Automatic merge from submit-queue

BestEffort QoS class has min cpu shares

**What this PR does / why we need it**:
BestEffort QoS class is given the minimum amount of CPU shares per the QoS design.
This commit is contained in:
Kubernetes Submit Queue 2017-02-26 06:32:43 -08:00 committed by GitHub
commit 28a8d783e6
1 changed files with 13 additions and 1 deletions
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14
pkg/kubelet/cm/container_manager_linux.go
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@ -283,16 +283,28 @@ func InitQOS(cgroupDriver, rootContainer string, subsystems *CgroupSubsystems) (
for _, qosClass := range qosClasses {
// get the container's absolute name
absoluteContainerName := CgroupName(path.Join(rootContainer, string(qosClass)))
resourceParameters := &ResourceConfig{}
// the BestEffort QoS class has a statically configured minShares value
if qosClass == v1.PodQOSBestEffort {
minShares := int64(MinShares)
resourceParameters.CpuShares = &minShares
}
// containerConfig object stores the cgroup specifications
containerConfig := &CgroupConfig{
Name: absoluteContainerName,
ResourceParameters: &ResourceConfig{},
ResourceParameters: resourceParameters,
}
// check if it exists
if !cm.Exists(absoluteContainerName) {
if err := cm.Create(containerConfig); err != nil {
return QOSContainersInfo{}, fmt.Errorf("failed to create top level %v QOS cgroup : %v", qosClass, err)
}
} else {
// to ensure we actually have the right state, we update the config on startup
if err := cm.Update(containerConfig); err != nil {
return QOSContainersInfo{}, fmt.Errorf("failed to update top level %v QOS cgroup : %v", qosClass, err)
}
}
}
// Store the top level qos container names