Alvaro Herrera wrote: > One thing to look at is the rate of WAL generation for a set number of > transactions. Maybe the later releases are generating more WAL due to > multixacts, for instance (prior to 9.3 these weren't wal-logged.) Also try 9.5alpha2, wherein bug #8470 is fixed, which is a big performance regression in 9.3 and 9.4. -- 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