Re: shared_buffers Question

From: Joe Lester <joe_lester(at)sweetwater(dot)com>
To: postgres list <pgsql-general(at)postgresql(dot)org>
Cc: scott_ribe(at)killerbytes(dot)com
Subject: Re: shared_buffers Question
Date: 2004-08-17 21:10:33
Message-ID: E04FE8D1-F091-11D8-BDD7-000A95A58EA0@sweetwater.com
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Thanks for the suggestion Scott. I did a...

find / -type f -size +100000 -print

The results contained 9 Gig! of swap files:
/private/var/vm/swapfile0
/private/var/vm/swapfile1
/private/var/vm/swapfile10
.... [plus many more entries]

That seems to indicate to me a memory "leak" of some sort. My symptoms
mirror almost exactly those of this fellow, who's thread was never
resolved as far as I can see:

http://archives.postgresql.org/pgsql-bugs/2004-06/msg00013.php

Anyone have any other suggestions on what to look for? At this rate I'm
leaking about 2 to 4 Gigs of memory (swap) per week. I'm running
postgres 7.4.1 on an 700MHz eMac, 512MB RAM, OS 10.3.2. Thanks.

> Scott Ribe:
> Also check to make sure that some rogue process somewhere isn't
filling your
> hard disk with some huge log file. I don't remember the UNIX commands
> offhand, but you should sudo a search starting in / for all large
files, say

Joe's Original Message:
I've been running a postgres server on a Mac (10.3, 512MB RAM) with 200
clients connecting for about 2 months without a crash. However just
yesterday the database and all the clients hung. When I looked at the
Mac I'm using as the postgres server it had a window up that said that
there was no more disk space available to write memory too. I ended up
having to restart the whole machine. I would like to configure postgres
so that is does not rely so heavily on disk-based memory but, rather,
tries to stay within the scope of the 512MB of physical memory in the
Mac.

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