These raw tps suggest that {backend,bgwriter}_flush_after should better be zero for this kind of load.Whether it should be the default is unclear yet, because as Andres pointed out this is one kind of load.FWIW, I don't think {backend,bgwriter} are the same here. It's primarily backend that matters.
Indeed, I was a little hasty to put bgwriter together based on this report.
I'm a little wary of "bgwriter_flush_after" though, I would not be surprised if someone reports some regressions, although probably not with a pgbench tpcb kind of load.
-- Fabien. -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
