Add debug snippet for debugging non-attributable performance issues

modules/start.go

@@ -173,6 +173,13 @@ func startModules() error {
 			case statusReady:
 				execCnt++
 				m.start(reports)
+				// DEBUG SNIPPET
+				// Slow-start for non-attributable performance issues.
+				// If you use subsystems, you'll need the snippet there too.
+				// log.Errorf("modules: starting %s", m.Name)
+				// time.Sleep(10 * time.Second)
+				// break
+				// END DEBUG SNIPPET
 			}
 		}
 

modules/subsystems/registry.go

@@ -187,6 +187,11 @@ func (mng *Manager) shouldServeUpdates() bool {
 // CheckConfig checks subsystem configuration values and enables
 // or disables subsystems and their dependencies as required.
 func (mng *Manager) CheckConfig(ctx context.Context) error {
+	// DEBUG SNIPPET
+	// Slow-start for non-attributable performance issues.
+	// You'll need the snippet in the modules too.
+	// time.Sleep(11 * time.Second)
+	// END DEBUG SNIPPET
 	return mng.handleConfigChanges(ctx)
 }