Add example usage of flag and timestamp to the logs

Signed-off-by: Sergen Yalçın <[email protected]>

cmd/perf/internal/managed/managed.go

@@ -120,7 +120,9 @@ func applyResources(mrTemplatePaths map[string]int, applyInterval time.Duration)
 				if err := runApplyCommand(f); err != nil {
 					return nil, err
 				}
-				time.Sleep(applyInterval)
+				if i != count {
+					time.Sleep(applyInterval)
+				}
 				tmpFiles = append(tmpFiles, f.Name())
 			}
 		}
@@ -319,7 +321,7 @@ func runCommand(command string) error {
 	sc := bufio.NewScanner(stdout)
 	sc.Split(bufio.ScanLines)
 	for sc.Scan() {
-		fmt.Println(sc.Text())
+		log.Info(sc.Text())
 	}
 	if err := cmd.Wait(); err != nil {
 		return errors.Wrap(err, "cannot wait for the command exit")

cmd/perf/internal/quantify.go

@@ -71,7 +71,7 @@ func NewCmdQuantify() *cobra.Command {
 	o.cmd.Flags().DurationVar(&o.stepDuration, "step-duration", 1*time.Second, "Step duration between two data points")
 	o.cmd.Flags().BoolVar(&o.clean, "clean", true, "Delete deployed MRs")
 	o.cmd.Flags().StringVar(&o.nodeIP, "node", "", "Node IP")
-	o.cmd.Flags().DurationVar(&o.applyInterval, "apply-interval", 0*time.Second, "Elapsed time between applying two manifests to the cluster")
+	o.cmd.Flags().DurationVar(&o.applyInterval, "apply-interval", 0*time.Second, "Elapsed time between applying two manifests to the cluster. Example = 10s. This means that examples will be applied every 10 seconds.")
 	o.cmd.Flags().DurationVar(&o.timeout, "timeout", 120*time.Minute, "Timeout for the experiment")
 
 	if err := o.cmd.MarkFlagRequired("provider-pods"); err != nil {