Further decouple some plugin fetch tasks from initial startup thread

src/octoprint/plugins/announcements/__init__.py

@@ -41,7 +41,13 @@ class AnnouncementPlugin(octoprint.plugin.AssetPlugin,
 	# StartupPlugin
 
 	def on_after_startup(self):
-		self._fetch_all_channels()
+		# decouple channel fetching from server startup
+		def fetch_data():
+			self._fetch_all_channels()
+
+		thread = threading.Thread(target=fetch_data)
+		thread.daemon = True
+		thread.start()
 
 	# SettingsPlugin
 

src/octoprint/plugins/pluginmanager/__init__.py

@@ -28,6 +28,7 @@ import pkg_resources
 import copy
 import dateutil.parser
 import time
+import threading
 
 class PluginManagerPlugin(octoprint.plugin.SimpleApiPlugin,
                           octoprint.plugin.TemplatePlugin,
@@ -95,8 +96,14 @@ class PluginManagerPlugin(octoprint.plugin.SimpleApiPlugin,
 		self._console_logger.setLevel(logging.DEBUG)
 		self._console_logger.propagate = False
 
-		self._repository_available = self._fetch_repository_from_disk()
-		self._notices_available = self._fetch_notices_from_disk()
+		# decouple repository fetching from server startup
+		def fetch_data():
+			self._repository_available = self._fetch_repository_from_disk()
+			self._notices_available = self._fetch_notices_from_disk()
+
+		thread = threading.Thread(target=fetch_data)
+		thread.daemon = True
+		thread.start()
 
 	##~~ SettingsPlugin
 

src/octoprint/plugins/softwareupdate/__init__.py

@@ -78,8 +78,14 @@ class SoftwareUpdatePlugin(octoprint.plugin.BlueprintPlugin,
 		self._console_logger.propagate = False
 
 	def on_after_startup(self):
-		# refresh cache now if necessary so it's faster once the user connects to the instance
-		self.get_current_versions()
+		# refresh cache now if necessary so it's faster once the user connects to the instance - but decouple it from
+		# the server startup
+		def fetch_data():
+			self.get_current_versions()
+
+		thread = threading.Thread(target=fetch_data)
+		thread.daemon = True
+		thread.start()
 
 	def _get_configured_checks(self):
 		with self._configured_checks_mutex:

src/octoprint/server/__init__.py

@@ -819,6 +819,7 @@ class Server(object):
 					kwargs.update(additional_request_data)
 
 					try:
+						start = time.time()
 						if plugin:
 							logger.info("Preemptively caching {} (ui {}) for {!r}".format(route, plugin, kwargs))
 						else:
@@ -832,7 +833,7 @@ class Server(object):
 						builder = EnvironBuilder(**kwargs)
 						app(builder.get_environ(), lambda *a, **kw: None)
 
-						logger.info("... done.".format(route, plugin, kwargs))
+						logger.info("... done in {:.2f}s".format(time.time() - start))
 					except:
 						logger.exception("Error while trying to preemptively cache {} for {!r}".format(route, kwargs))