From: Jeremy Haile <jhaile@fastmail.fm>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Matthew T. O'Connor <matthew@zeut.net>
Cc: pgsql-performance@postgresql.org
Subject: Re: Autoanalyze settings with zero scale factor
Date: Thu, 18 Jan 2007 16:53:21 -0500
Message-ID: <1169157201.18501.1169996967@webmail.messagingengine.com> (raw)
In-Reply-To: <6362.1169155817@sss.pgh.pa.us>
References: <1169145474.20103.1169962769@webmail.messagingengine.com>
<45AFC86B.9010704@zeut.net>
<1169151707.6247.1169971737@webmail.messagingengine.com>
<6362.1169155817@sss.pgh.pa.us>
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
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To: pgsql-performance@postgresql.org
Cc: jhaile@fastmail.fm, tgl@sss.pgh.pa.us, matthew@zeut.net
Subject: Re: Autoanalyze settings with zero scale factor
In-Reply-To: <1169157201.18501.1169996967@webmail.messagingengine.com>
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