github/kubernetes
1
0
Fork 0
mirror of https://github.com/k3s-io/kubernetes.git synced 2025-07-23 11:50:44 +00:00
Code Issues Projects Releases Wiki Activity

Merge pull request #28570 from kevinjkj/kevinjkj-patch-3

Browse Source 
Automatic merge from submit-queue

Optimizing the processing flow of HandlePodAdditions and canAdmitPod …

Optimizing the processing flow of HandlePodAdditions and canAdmitPod methods. If the following loop body in canAdmitPod method is removed, the detection speed can be improved, and the change is very small.
------
otherPods := []*api.Pod{}
	for _, p := range pods {
		if p != pod {
			otherPods = append(otherPods, p)
		}
	}
------
This commit is contained in:
k8s-merge-robot 2016-07-10 23:11:00 -07:00 committed by GitHub
commit d6e84cc2e9
2 changed files with 9 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
pkg/kubelet/kubelet.go
View File

@ -2202,8 +2202,8 @@ func (kl *Kubelet) rejectPod(pod *api.Pod, reason, message string) {
}
// canAdmitPod determines if a pod can be admitted, and gives a reason if it
// cannot. "pod" is new pod, while "pods" include all admitted pods plus the
// new pod. The function returns a boolean value indicating whether the pod
// cannot. "pod" is new pod, while "pods" are all admitted pods
// The function returns a boolean value indicating whether the pod
// can be admitted, a brief single-word reason and a message explaining why
// the pod cannot be admitted.
func (kl *Kubelet) canAdmitPod(pods []*api.Pod, pod *api.Pod) (bool, string, string) {
@ -2212,25 +2212,19 @@ func (kl *Kubelet) canAdmitPod(pods []*api.Pod, pod *api.Pod) (bool, string, str
glog.Errorf("Cannot get Node info: %v", err)
return false, "InvalidNodeInfo", "Kubelet cannot get node info."
}
otherPods := []*api.Pod{}
for _, p := range pods {
if p != pod {
otherPods = append(otherPods, p)
}
}
// the kubelet will invoke each pod admit handler in sequence
// if any handler rejects, the pod is rejected.
// TODO: move predicate check into a pod admitter
// TODO: move out of disk check into a pod admitter
// TODO: out of resource eviction should have a pod admitter call-out
attrs := &lifecycle.PodAdmitAttributes{Pod: pod, OtherPods: otherPods}
attrs := &lifecycle.PodAdmitAttributes{Pod: pod, OtherPods: pods}
for _, podAdmitHandler := range kl.PodAdmitHandlers {
if result := podAdmitHandler.Admit(attrs); !result.Admit {
return false, result.Reason, result.Message
}
}
nodeInfo := schedulercache.NewNodeInfo(otherPods...)
nodeInfo := schedulercache.NewNodeInfo(pods...)
nodeInfo.SetNode(node)
fit, err := predicates.GeneralPredicates(pod, nil, nodeInfo)
if !fit {
@ -2447,22 +2441,22 @@ func (kl *Kubelet) HandlePodAdditions(pods []*api.Pod) {
start := kl.clock.Now()
sort.Sort(podsByCreationTime(pods))
for _, pod := range pods {
kl.podManager.AddPod(pod)
if kubepod.IsMirrorPod(pod) {
kl.podManager.AddPod(pod)
kl.handleMirrorPod(pod, start)
continue
}
// Note that allPods includes the new pod since we added at the
// beginning of the loop.
// Note that allPods excludes the new pod.
allPods := kl.podManager.GetPods()
// We failed pods that we rejected, so activePods include all admitted
// pods that are alive and the new pod.
// pods that are alive.
activePods := kl.filterOutTerminatedPods(allPods)
// Check if we can admit the pod; if not, reject it.
if ok, reason, message := kl.canAdmitPod(activePods, pod); !ok {
kl.rejectPod(pod, reason, message)
continue
}
kl.podManager.AddPod(pod)
mirrorPod, _ := kl.podManager.GetMirrorPodByPod(pod)
kl.dispatchWork(pod, kubetypes.SyncPodCreate, mirrorPod, start)
kl.probeManager.AddPod(pod)

2
pkg/kubelet/runonce.go
View File

@ -71,7 +71,7 @@ func (kl *Kubelet) runOnce(pods []*api.Pod, retryDelay time.Duration) (results [
admitted := []*api.Pod{}
for _, pod := range pods {
// Check if we can admit the pod.
if ok, reason, message := kl.canAdmitPod(append(admitted, pod), pod); !ok {
if ok, reason, message := kl.canAdmitPod(admitted, pod); !ok {
kl.rejectPod(pod, reason, message)
} else {
admitted = append(admitted, pod)