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authormathieui <mathieui@mathieui.net>2016-08-22 01:29:07 +0200
committermathieui <mathieui@mathieui.net>2016-08-22 01:29:07 +0200
commit52cd8f4b226f22f78eae997212073011716cdd08 (patch)
tree12d502e9411a395bd165a531efc754331790277b
parente28318c2711a1a3410fcefe2a6f292656056aeb3 (diff)
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Don’t trigger presence events on MUC presence
Specifically, previously, each MUC would be added as a roster item, and then each join presence would be counted as a resource of that item, triggering 1 to 5 events and more backend logic in slixmpp. As a result, joining big rooms is tremendously slow, (JID() calls, event() calls, __getitem__ calls for nothing), and takes RAM (a quick tracemalloc tells me around 1 MiB for 3500 participants, i.e. 2 big IRC rooms). Those resources may not necessarily be cleaned properly, leading to memory leaks on long-term usage. This is a micro-optimization that adds an attribute to roster items so that MUC room events can be ignored safely while not affecting common roster usage.
-rw-r--r--slixmpp/basexmpp.py3
-rw-r--r--slixmpp/plugins/xep_0045.py1
-rw-r--r--slixmpp/roster/single.py1
3 files changed, 5 insertions, 0 deletions
diff --git a/slixmpp/basexmpp.py b/slixmpp/basexmpp.py
index 3cc299b2..e5f5f0b1 100644
--- a/slixmpp/basexmpp.py
+++ b/slixmpp/basexmpp.py
@@ -752,6 +752,9 @@ class BaseXMPP(XMLStream):
Update the roster with presence information.
"""
+ if self.roster[presence['from']].ignore_updates:
+ return
+
if not self.is_component and not presence['to'].bare:
presence['to'] = self.boundjid
diff --git a/slixmpp/plugins/xep_0045.py b/slixmpp/plugins/xep_0045.py
index f6f48891..8ab51784 100644
--- a/slixmpp/plugins/xep_0045.py
+++ b/slixmpp/plugins/xep_0045.py
@@ -160,6 +160,7 @@ class XEP_0045(BasePlugin):
got_online = False
if pr['muc']['room'] not in self.rooms.keys():
return
+ self.xmpp.roster[pr['from']].ignore_updates = True
entry = pr['muc'].get_stanza_values()
entry['show'] = pr['show']
entry['status'] = pr['status']
diff --git a/slixmpp/roster/single.py b/slixmpp/roster/single.py
index 62fbca41..3961cddf 100644
--- a/slixmpp/roster/single.py
+++ b/slixmpp/roster/single.py
@@ -56,6 +56,7 @@ class RosterNode(object):
self.xmpp = xmpp
self.jid = jid
self.db = db
+ self.ignore_updates = False
self.auto_authorize = True
self.auto_subscribe = True
self.last_status = None