On 24/03/17 11:23, Erik Rijkers wrote: > On 2017-03-24 10:45, Mark Kirkwood wrote: >> >> However one minor observation - as Michael Banck noted - the elapsed >> time for slave to catch up after running: >> >> $ pgbench -c8 -T600 bench >> >> on the master was (subjectively) much longer than for physical >> streaming replication. Is this expected? >> > > I think you probably want to do (on the slave) : > > alter role <you role> set synchronous_commit = off; > > otherwise it's indeed extremely slow. >
Yes that might be one reason, see https://www.postgresql.org/message-id/08b7053b-5679-0733-3af7-00b8cde62...@2ndquadrant.com (although it probably needs rebase now) Also don't forget that the snapbuild performance fixes haven't been committed yet so it can take long time to even start. -- Petr Jelinek http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training & Services -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
