From 438ef4763704fb90c3aa0b7aa0c688607e60b010 Mon Sep 17 00:00:00 2001
From: Erik Johnston <erik@matrix.org>
Date: Tue, 6 Sep 2016 10:28:35 +0100
Subject: [PATCH] Short circuit if presence is the same

---
 synapse/handlers/presence.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/synapse/handlers/presence.py b/synapse/handlers/presence.py
index af389b590f..a9f5233119 100644
--- a/synapse/handlers/presence.py
+++ b/synapse/handlers/presence.py
@@ -941,6 +941,9 @@ class PresenceHandler(object):
 def should_notify(old_state, new_state):
     """Decides if a presence state change should be sent to interested parties.
     """
+    if old_state == new_state:
+        return False
+
     if old_state.status_msg != new_state.status_msg:
         notify_reason_counter.inc("status_msg_change")
         return True