hi, > On Tue, Nov 29, 2011 at 1:42 AM, YAMAMOTO Takashi > <y...@mwd.biglobe.ne.jp> wrote: >>> On Mon, Nov 7, 2011 at 5:26 PM, Simon Riggs <si...@2ndquadrant.com> wrote: >>> >>>>> 5. Make the WAL writer more responsive, maybe using latches, so that >>>>> it doesn't take as long for the commit record to make it out to disk. >>>> >>>> I'm working on this already as part of the update for power >>>> reduction/group commit/replication performance. >>> >>> I extracted this from my current patch for you to test. >> >> is it expected to produce more frequent fsync? > > Yes, I would expect that. What kind of increase are you seeing? Is > it causing a problem for you, or are you just making an observation?
i was curious because my application uses async commits mainly to avoid frequent fsync. i have no numbers right now. YAMAMOTO Takashi > > -- > Robert Haas > EnterpriseDB: http://www.enterprisedb.com > The Enterprise PostgreSQL Company -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
