38dc7509f8
We can set the container cpuset.cpus diring the creation and it will not need to call to update resources after the container creation. Additional side effect of the change, that the runc process that responsible to create the container will run with the same CPU affinity because the runc runs on the cpuset provided in the config.json arg. It will allow to prevent undesirable interupts on isolated CPUs. Signed-off-by: Artyom Lukianov <alukiano@redhat.com>
68 lines
2.1 KiB
Go
68 lines
2.1 KiB
Go
/*
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Copyright 2017 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package cm
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import (
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"k8s.io/api/core/v1"
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utilfeature "k8s.io/apiserver/pkg/util/feature"
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runtimeapi "k8s.io/cri-api/pkg/apis/runtime/v1alpha2"
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kubefeatures "k8s.io/kubernetes/pkg/features"
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"k8s.io/kubernetes/pkg/kubelet/cm/cpumanager"
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"k8s.io/kubernetes/pkg/kubelet/cm/topologymanager"
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)
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type InternalContainerLifecycle interface {
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PreCreateContainer(pod *v1.Pod, container *v1.Container, containerConfig *runtimeapi.ContainerConfig) error
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PreStartContainer(pod *v1.Pod, container *v1.Container, containerID string) error
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PreStopContainer(containerID string) error
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PostStopContainer(containerID string) error
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}
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// Implements InternalContainerLifecycle interface.
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type internalContainerLifecycleImpl struct {
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cpuManager cpumanager.Manager
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topologyManager topologymanager.Manager
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}
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func (i *internalContainerLifecycleImpl) PreStartContainer(pod *v1.Pod, container *v1.Container, containerID string) error {
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if i.cpuManager != nil {
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i.cpuManager.AddContainer(pod, container, containerID)
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}
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if utilfeature.DefaultFeatureGate.Enabled(kubefeatures.TopologyManager) {
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err := i.topologyManager.AddContainer(pod, containerID)
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if err != nil {
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return err
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}
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}
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return nil
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}
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func (i *internalContainerLifecycleImpl) PreStopContainer(containerID string) error {
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return nil
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}
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func (i *internalContainerLifecycleImpl) PostStopContainer(containerID string) error {
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if utilfeature.DefaultFeatureGate.Enabled(kubefeatures.TopologyManager) {
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err := i.topologyManager.RemoveContainer(containerID)
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if err != nil {
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return err
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}
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}
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return nil
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}
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