On Fri, Nov 4, 2011 at 2:45 PM, Claudio Freire <klaussfreire@xxxxxxxxx> wrote: > I don't think 1 second can be such a big difference for the bgwriter, > but I might be wrong. Well, the default value is 200 ms. And I've never before heard of anyone tuning it up, except maybe to save on power consumption on a system with very low utilization. Nearly always you want to reduce it. > The wal_writer makes me doubt, though. If logged activity was higher > than 8MB/s, then that setting would block it all. > I guess I really should lower it. Here again, you've set it to ten times the default value. That doesn't seem like a good idea. I would start with the default and tune down. -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
