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@@ -99,3 +99,10 @@ The log format can vary slightly depending on your log configuration, but here i
 * `"GET /_matrix/client/r0/sync HTTP/1.1"`: the http request line, including the path of the requested url.
 * `"Mozilla/5.0 ..."`: the user-agent of the client. 
 * `[0 dbevts]`: the number of Matrix events which were fetched from the database to fulfil this request.
+
+What are the biggest rooms on my server?
+---
+
+```
+select room_id, count(*) as num_rows from state_groups_state group by room_id order by num_rows desc limit 10;
+```