Thomas Munro wrote: > 4. You could look into whether all those multixacts with many member > are really expected. (Large numbers of concurrent FK checks or > explicit share locks on the same rows perhaps? A good proportion of > this happened on one day this week I see.) I think maybe this patch https://www.postgresql.org/message-id/20150620043650.GX133018%40postgresql.org should help with this. I expect to come back to this and get it pushed to 9.3 and 9.4 sometime ... -- Álvaro Herrera http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general