Message-Id: <1169157201.18501.1169996967@webmail.messagingengine.com>
From: "Jeremy Haile" <jhaile@fastmail.fm>
To: "Tom Lane" <tgl@sss.pgh.pa.us>
Cc: "Matthew T. O'Connor" <matthew@zeut.net>, pgsql-performance@postgresql.org
Content-Disposition: inline
Content-Transfer-Encoding: 7bit
Content-Type: text/plain; charset="ISO-8859-1"
MIME-Version: 1.0
References: <1169145474.20103.1169962769@webmail.messagingengine.com>
	<45AFC86B.9010704@zeut.net>
	<1169151707.6247.1169971737@webmail.messagingengine.com>
	<6362.1169155817@sss.pgh.pa.us>
Subject: Re: Autoanalyze settings with zero scale factor
In-Reply-To: <6362.1169155817@sss.pgh.pa.us>
Date: Thu, 18 Jan 2007 16:53:21 -0500

Well - it hadn't run on any table in over 24 hours (according to
pg_stat_user_tables).  My tables are constantly being inserted into and
deleted from, and the autovacuum settings are pretty aggressive.  I also
had not seen the autovac process running in the past 24 hours. (although
I wasn't watching it *all* the time)

So - as far as I could tell it wasn't running.


On Thu, 18 Jan 2007 16:30:17 -0500, "Tom Lane" <tgl@sss.pgh.pa.us> said:
> "Jeremy Haile" <jhaile@fastmail.fm> writes:
> > No tables have been vacuumed or analyzed today.  I had thought that this
> > problem was due to my pg_autovacuum changes, but perhaps not.  I
> > restarted PostgreSQL (in production - yikes)  About a minute after being
> > restarted, the autovac process fired up.
> 
> > What could get PG in a state where autovac isn't running?
> 
> Um, are you sure it wasn't?  The autovac process is not an always-there
> thing, it quits after each pass and then the postmaster starts a new one
> awhile later.
> 
> 			regards, tom lane