--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/velib_python/tools/dbus_signal_cntr.py	Sun Dec 05 14:35:36 2021 +1030
@@ -0,0 +1,94 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+from dbus.mainloop.glib import DBusGMainLoop
+import gobject
+import dbus
+import dbus.service
+from pprint import pprint
+import os
+import signal
+from time import time
+
+items = {}
+total = 0
+t_started = time()
+
+class DbusTracker(object):
+	def __init__(self): 
+
+		self.items = {}
+
+		# For a PC, connect to the SessionBus, otherwise (Venus device) connect to the systembus
+		self.dbusConn = dbus.SessionBus() if 'DBUS_SESSION_BUS_ADDRESS' in os.environ else dbus.SystemBus()
+
+		# subscribe to all signals
+		self.dbusConn.add_signal_receiver(self._signal_receive_handler,
+			sender_keyword='sender',
+			path_keyword='path')
+
+		names = self.dbusConn.list_names()
+		for name in names:
+			if name.startswith(":"):
+				continue
+
+			items[str(self.dbusConn.get_name_owner(name))] = {"_total": 0, "_name": str(name)}
+
+
+	def _signal_receive_handler(*args, **kwargs):
+		global total
+		total = total + 1
+
+		sender = str(kwargs['sender'])
+		path = str(kwargs['path'])
+
+		d = items.get(sender)
+		if d is None:
+			items[sender] = {"_total": 1, path: 1}
+			return
+
+		d["_total"] = d["_total"] + 1
+
+		p = d.get(path)
+		if p is None:
+			d[path] = 1
+			return
+
+		d[path] = p + 1
+
+
+def printall():
+	t_elapsed = time() - t_started
+
+	print(chr(27) + "[2J" + chr(27) + "[;H")
+
+	row_format = "{:<60} {:>4}  {:>4}%  {:>4.2f} / s"
+
+	print(row_format.format("Total", total, 100, total / t_elapsed))
+
+	for service, values in items.iteritems():
+		# skip the services that didn't emit any signals
+		if len(values) == 2 and "_name" in values:
+			continue
+
+		print(row_format.format(values.get("_name", service), values["_total"], values["_total"] * 100 / total, values["_total"] / t_elapsed))
+
+	# uncomment this to see all the paths as well.
+	# print("--------------")
+	# pprint(items)
+	return True
+
+
+def main():
+	DBusGMainLoop(set_as_default=True)
+
+	d = DbusTracker()
+
+	gobject.timeout_add(2000, printall)
+
+	mainloop = gobject.MainLoop()
+	mainloop.run()
+
+
+if __name__ == "__main__":
+	main()