Re: Linux memory zone reclaim

From: Bruce Momjian <bruce(at)momjian(dot)us>
To: Greg Smith <greg(at)2ndQuadrant(dot)com>
Cc: pgsql-performance(at)postgresql(dot)org
Subject: Re: Linux memory zone reclaim
Date: 2012-07-27 00:25:54
Message-ID: 20120727002554.GC24238@momjian.us
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On Tue, Jul 17, 2012 at 09:52:11PM -0400, Greg Smith wrote:
> I've taken to disabling /proc/sys/vm/zone_reclaim_mode on any Linux
> system where it's turned on now. I'm still working through whether
--------------------------------
> it also makes sense in all cases to use the more complicated memory
> interleaving suggestions that MySQL users have implemented,
> something most people would need to push into their PostgreSQL
> server started up scripts in /etc/init.d (That will be a fun
> rpm/deb packaging issue to deal with if this becomes more
> wide-spread) Suggestions on whether that is necessary, or if just
> disabling zone_reclaim is enough, are welcome from anyone who wants
> to try and benchmark it.

Should I be turning it off on my server too? It is enabled on my
system.

--
Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://enterprisedb.com

+ It's impossible for everything to be true. +

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