Golang framework.ResourceMonitor類代碼示例

		}
		if len(nodeErrs) > 0 {
			errList = append(errList, fmt.Sprintf("node %v:\n %s", nodeName, strings.Join(nodeErrs, ", ")))
		}
	}
	if len(errList) > 0 {
		framework.Failf("CPU usage exceeding limits:\n %s", strings.Join(errList, "\n"))
	}
}

// Slow by design (1 hour)
var _ = framework.KubeDescribe("Kubelet [Serial] [Slow]", func() {
	var nodeNames sets.String
	f := framework.NewDefaultFramework("kubelet-perf")
	var om *framework.RuntimeOperationMonitor
	var rm *framework.ResourceMonitor

	BeforeEach(func() {
		// Wait until image prepull pod has completed so that they wouldn't
		// affect the runtime cpu usage. Fail the test if prepulling cannot
		// finish in time.
		if err := framework.WaitForPodsSuccess(f.ClientSet, api.NamespaceSystem, framework.ImagePullerLabels, imagePrePullingLongTimeout); err != nil {
			framework.Failf("Image puller didn't complete in %v, not running resource usage test since the metrics might be adultrated", imagePrePullingLongTimeout)
		}
		nodes := framework.GetReadySchedulableNodesOrDie(f.ClientSet)
		nodeNames = sets.NewString()
		for _, node := range nodes.Items {
			nodeNames.Insert(node.Name)
		}
		om = framework.NewRuntimeOperationMonitor(f.ClientSet)
		rm = framework.NewResourceMonitor(f.ClientSet, framework.TargetContainers(), containerStatsPollingPeriod)

func runResourceTrackingTest(f *framework.Framework, podsPerNode int, nodeNames sets.String, rm *framework.ResourceMonitor,
	expectedCPU map[string]map[float64]float64, expectedMemory framework.ResourceUsagePerContainer) {
	numNodes := nodeNames.Len()
	totalPods := podsPerNode * numNodes
	By(fmt.Sprintf("Creating a RC of %d pods and wait until all pods of this RC are running", totalPods))
	rcName := fmt.Sprintf("resource%d-%s", totalPods, string(uuid.NewUUID()))

	// TODO: Use a more realistic workload
	Expect(framework.RunRC(testutils.RCConfig{
		Client:    f.ClientSet,
		Name:      rcName,
		Namespace: f.Namespace.Name,
		Image:     framework.GetPauseImageName(f.ClientSet),
		Replicas:  totalPods,
	})).NotTo(HaveOccurred())

	// Log once and flush the stats.
	rm.LogLatest()
	rm.Reset()

	By("Start monitoring resource usage")
	// Periodically dump the cpu summary until the deadline is met.
	// Note that without calling framework.ResourceMonitor.Reset(), the stats
	// would occupy increasingly more memory. This should be fine
	// for the current test duration, but we should reclaim the
	// entries if we plan to monitor longer (e.g., 8 hours).
	deadline := time.Now().Add(monitoringTime)
	for time.Now().Before(deadline) {
		timeLeft := deadline.Sub(time.Now())
		framework.Logf("Still running...%v left", timeLeft)
		if timeLeft < reportingPeriod {
			time.Sleep(timeLeft)
		} else {
			time.Sleep(reportingPeriod)
		}
		logPodsOnNodes(f.ClientSet, nodeNames.List())
	}

	By("Reporting overall resource usage")
	logPodsOnNodes(f.ClientSet, nodeNames.List())
	usageSummary, err := rm.GetLatest()
	Expect(err).NotTo(HaveOccurred())
	// TODO(random-liu): Remove the original log when we migrate to new perfdash
	framework.Logf("%s", rm.FormatResourceUsage(usageSummary))
	// Log perf result
	framework.PrintPerfData(framework.ResourceUsageToPerfData(rm.GetMasterNodeLatest(usageSummary)))
	verifyMemoryLimits(f.ClientSet, expectedMemory, usageSummary)

	cpuSummary := rm.GetCPUSummary()
	framework.Logf("%s", rm.FormatCPUSummary(cpuSummary))
	// Log perf result
	framework.PrintPerfData(framework.CPUUsageToPerfData(rm.GetMasterNodeCPUSummary(cpuSummary)))
	verifyCPULimits(expectedCPU, cpuSummary)

	By("Deleting the RC")
	framework.DeleteRCAndPods(f.ClientSet, f.Namespace.Name, rcName)
}

				framework.Logf("Error updating node %s: %v", nodeName, err)
			} else {
				break
			}
		}
		Expect(err).NotTo(HaveOccurred())
	}
}

var _ = framework.KubeDescribe("kubelet", func() {
	var c clientset.Interface
	var numNodes int
	var nodeNames sets.String
	var nodeLabels map[string]string
	f := framework.NewDefaultFramework("kubelet")
	var resourceMonitor *framework.ResourceMonitor

	BeforeEach(func() {
		c = f.ClientSet
		// Use node labels to restrict the pods to be assigned only to the
		// nodes we observe initially.
		nodeLabels = make(map[string]string)
		nodeLabels["kubelet_cleanup"] = "true"

		nodes := framework.GetReadySchedulableNodesOrDie(c)
		numNodes = len(nodes.Items)
		nodeNames = sets.NewString()
		// If there are a lot of nodes, we don't want to use all of them
		// (if there are 1000 nodes in the cluster, starting 10 pods/node
		// will take ~10 minutes today). And there is also deletion phase.
		// Instead, we choose at most 10 nodes.