From: Richard Huxton <dev@archonet.com>
To: Jason Lustig <lustig@brandeis.edu>
Cc: pgsql-performance@postgresql.org
Subject: Re: Autovacuum running out of memory
Date: Tue, 16 Oct 2007 13:23:12 +0100
Message-ID: <4714AD30.6000103@archonet.com> (raw)
In-Reply-To: <E8328FA1-800E-4684-93D2-A1002BB72396@brandeis.edu>
References: <374EB3D1-EE74-4B8C-9EEC-104ADD097568@brandeis.edu>
<4714A458.5060408@archonet.com>
<E8328FA1-800E-4684-93D2-A1002BB72396@brandeis.edu>
Jason Lustig wrote:
> There isn't any more error message than this... it simply repeats every
> minute or so, which is really quite strange. And the user & db is really
> blank in the log, I didn't trim it (if I did I would have replaced it
> with dummy values).
Hmm - odd that you're not getting any connection details.
> I'm using pg 8.2.4 on Linux 2.6.15.
Fair enough.
>>> Oct 16 06:43:47 [2897]: [1-1] user=,db= ERROR: out of memory
>>> Oct 16 06:43:47 [2897]: [1-2] user=,db= DETAIL: Failed on request
>>> of size 524287998.
Well, since this is about 500MB and your maintenance_work_mem is set to
500MB that's the obvious place to start. It might just be that you've
not got enough free memory.
What happens if you set maintenance_work_mem to say 50MB?
--
Richard Huxton
Archonet Ltd
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To: pgsql-performance@postgresql.org
Cc: dev@archonet.com, lustig@brandeis.edu
Subject: Re: Autovacuum running out of memory
In-Reply-To: <4714AD30.6000103@archonet.com>
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