Improve controller performance and startup time

- Reduce controller cache sync polling interval from 5s to 1s for faster startup
- Increase default page size to 1000 for faster iteration of objects

Author: yash97

controllers/custom/custom_controller.go

@@ -170,7 +170,7 @@ func (c *CustomController) Start(ctx context.Context) error {
 func (c *CustomController) WaitForCacheSync(controller cache.Controller) {
 	for !controller.HasSynced() && controller.LastSyncResourceVersion() == "" {
 		c.log.Info("waiting for controller to sync")
-		time.Sleep(time.Second * 5)
+		time.Sleep(time.Second * 1)
 	}
 	c.conditions.SetPodDataStoreSyncStatus(true)
 

main.go

@@ -147,7 +147,7 @@ func main() {
 	flag.BoolVar(&enableProfiling, "enable-profiling", false,
 		"Enable runtime profiling for debugging purposes.")
 	flag.StringVar(&clusterName, "cluster-name", "", "The name of the k8s cluster")
-	flag.IntVar(&listPageLimit, "page-limit", 100,
+	flag.IntVar(&listPageLimit, "page-limit", 1000,
 		"The page size limiting the number of response for list operation to API Server")
 	flag.StringVar(&outputPath, "log-file", "stderr", "The path to redirect controller logs")
 	flag.IntVar(&healthCheckTimeout, "health-check-timeout", 28,