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authorShay <hillerys@element.io>2023-02-08 11:25:11 -0800
committerGitHub <noreply@github.com>2023-02-08 11:25:11 -0800
commit55e4d27b36fd69a3cf3eceecbd42706579ef2dc7 (patch)
tree5dec59c10eb02b84f840d18a198028f603ce70c8 /synapse
parentExplicit disabling of disallowed_untyped_defs. (#15026) (diff)
downloadsynapse-55e4d27b36fd69a3cf3eceecbd42706579ef2dc7.tar.xz
Limit concurrent event creation for a room to avoid state resolution when sending bursts of events to a local room (#14977)
Diffstat (limited to 'synapse')
-rw-r--r--synapse/handlers/message.py6
1 files changed, 3 insertions, 3 deletions
diff --git a/synapse/handlers/message.py b/synapse/handlers/message.py
index e688e00575..5f6da2943f 100644
--- a/synapse/handlers/message.py
+++ b/synapse/handlers/message.py
@@ -499,9 +499,9 @@ class EventCreationHandler:
 
         self.request_ratelimiter = hs.get_request_ratelimiter()
 
-        # We arbitrarily limit concurrent event creation for a room to 5.
-        # This is to stop us from diverging history *too* much.
-        self.limiter = Linearizer(max_count=5, name="room_event_creation_limit")
+        # We limit concurrent event creation for a room to 1. This prevents state resolution
+        # from occurring when sending bursts of events to a local room
+        self.limiter = Linearizer(max_count=1, name="room_event_creation_limit")
 
         self._bulk_push_rule_evaluator = hs.get_bulk_push_rule_evaluator()