Index: src/org/openstreetmap/josm/gui/MainApplication.java
===================================================================
--- src/org/openstreetmap/josm/gui/MainApplication.java (revision 19547)
+++ src/org/openstreetmap/josm/gui/MainApplication.java (working copy)
@@ -744,6 +744,8 @@
         return str + Stream.generate(() -> " ").limit(Math.max(0, 43 - str.length())).collect(Collectors.joining(""));
     }

+    private static final long START_TIME = System.nanoTime();
+
     /**
      * Main application Startup
      * @param argArray Command-line arguments
@@ -1002,6 +1004,7 @@

         monitor.indeterminateSubTask(tr("Creating main GUI"));
         Lifecycle.initialize(new MainInitialization(new MainApplication(mainFrame)));
+        Logging.info("Startup complete in " + (System.nanoTime() - START_TIME) / 1_000_000 + " ms");

         if (!skipLoadingPlugins) {
             loadLatePlugins(splash, monitor, pluginsToLoad);