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authorBrendan Abolivier <babolivier@matrix.org>2020-05-07 11:35:23 +0200
committerGitHub <noreply@github.com>2020-05-07 10:35:23 +0100
commitd9b8d274949df7356e880a67d3aac1b25613ab1f (patch)
tree8f2af8762b9e13eec493e288c9a7b6c5c55892bb /docs
parentImprove per-block CPU and DB usage metrics (#7426) (diff)
downloadsynapse-d9b8d274949df7356e880a67d3aac1b25613ab1f.tar.xz
Add a configuration setting for the dummy event threshold (#7422)
Add dummy_events_threshold which allows configuring the number of forward extremities a room needs for Synapse to send forward extremities in it.
Diffstat (limited to 'docs')
-rw-r--r--docs/sample_config.yaml12
1 files changed, 12 insertions, 0 deletions
diff --git a/docs/sample_config.yaml b/docs/sample_config.yaml
index fc970986c6..98ead7dc0e 100644
--- a/docs/sample_config.yaml
+++ b/docs/sample_config.yaml
@@ -253,6 +253,18 @@ listeners:
   #  bind_addresses: ['::1', '127.0.0.1']
   #  type: manhole
 
+# Forward extremities can build up in a room due to networking delays between
+# homeservers. Once this happens in a large room, calculation of the state of
+# that room can become quite expensive. To mitigate this, once the number of
+# forward extremities reaches a given threshold, Synapse will send an
+# org.matrix.dummy_event event, which will reduce the forward extremities
+# in the room.
+#
+# This setting defines the threshold (i.e. number of forward extremities in the
+# room) at which dummy events are sent. The default value is 10.
+#
+#dummy_events_threshold: 5
+
 
 ## Homeserver blocking ##