On Thu, Dec 15, 2011 at 18:13, Tomas Vondra <t...@fuzzy.cz> wrote: > On 15 Prosinec 2011, 17:55, pratikchirania wrote: >> Hi, >> >> I am having a scenario where I get consistent warnings in the pglog >> folder: >> >> 2011-12-11 00:00:03 JST WARNING: pgstat wait timeout >> 2011-12-11 00:00:14 JST WARNING: pgstat wait timeout >> 2011-12-11 00:00:24 JST WARNING: pgstat wait timeout >> 2011-12-11 00:00:31 JST WARNING: pgstat wait timeout >> 2011-12-11 00:00:44 JST WARNING: pgstat wait timeout >> 2011-12-11 00:00:52 JST WARNING: pgstat wait timeout >> 2011-12-11 00:01:03 JST WARNING: pgstat wait timeout >> 2011-12-11 00:01:11 JST WARNING: pgstat wait timeout >> >> This is impacting database performance. > > It's rather a sign that the I/O is overloaded, although in some cases it > may actually be the cause. > >> The issue persists even when I use the database minimally. > > Yes, because the file is written periodically - twice a second IIRC. If > the file is large, this may be an issue. What is the pgstat.stat size > (should be in data/global).
That was only true prior to 8.4. As of 8.4 it's only written when necessary, which is usually a lot less than twice / second. -- Magnus Hagander Me: http://www.hagander.net/ Work: http://www.redpill-linpro.com/ -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
