client-go http trace分析耗时

klog.InitFlags(nil)
flag.Parse()
defer klog.Flush()

cfg, err := clientcmd.BuildConfigFromFlags("", "/root/.kube/config")
if err != nil {
	klog.Fatalf("Error building kubeconfig: %s", err.Error())
}

kubeClient, err := kubernetes.NewForConfig(cfg)
if err != nil {
	klog.Fatalf("Error building kubernetes clientset: %s", err.Error())
}

informerFactory := informers.NewSharedInformerFactory(kubeClient, 0)
hasSynced := informerFactory.Core().V1().Nodes().Informer().HasSynced
informerFactory.Core().V1().Nodes().Lister()
informerFactory.Core().V1().Nodes().Informer()

newStopCh := make(chan struct{})
informerFactory.Start(newStopCh)

klog.Infof("begin to wait cache sync")
if ok := cache.WaitForCacheSync(newStopCh, hasSynced); !ok {
	klog.Fatalf("failed to wait for caches to sync")
}
klog.Infof("wait cache sync end")

# 指定klog日志级别是9
./test --v=9