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-rw-r--r--synapse/handlers/message.py10
1 files changed, 2 insertions, 8 deletions
diff --git a/synapse/handlers/message.py b/synapse/handlers/message.py
index 5c50c611ba..0bb111d047 100644
--- a/synapse/handlers/message.py
+++ b/synapse/handlers/message.py
@@ -21,6 +21,7 @@ from synapse.streams.config import PaginationConfig
 from synapse.events.utils import serialize_event
 from synapse.events.validator import EventValidator
 from synapse.util import unwrapFirstError
+from synapse.util.async import concurrently_execute
 from synapse.util.caches.snapshot_cache import SnapshotCache
 from synapse.types import UserID, RoomStreamToken, StreamToken
 
@@ -556,14 +557,7 @@ class MessageHandler(BaseHandler):
             except:
                 logger.exception("Failed to get snapshot")
 
-        # Only do N rooms at once
-        n = 5
-        d_list = [handle_room(e) for e in room_list]
-        for i in range(0, len(d_list), n):
-            yield defer.gatherResults(
-                d_list[i:i + n],
-                consumeErrors=True
-            ).addErrback(unwrapFirstError)
+        yield concurrently_execute(handle_room, room_list, 10)
 
         account_data_events = []
         for account_data_type, content in account_data.items():