Re: Linux memory zone reclaim

From: John Lister <john(dot)lister(at)kickstone(dot)com>
To: pgsql-performance(at)postgresql(dot)org
Subject: Re: Linux memory zone reclaim
Date: 2012-07-24 18:36:25
Message-ID: 500EEB29.3030503@kickstone.com
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On Tue, Jul 18, 2012 at 2:38 AM, Claudio Freire wrote:
>It must have been said already, but I'll repeat it just in case:

>I think postgres has an easy solution. Spawn the postmaster with
>"interleave", to allocate shared memory, and then switch to "local" on
>the backends.

Do you have a suggestion about how to do that? I'm running Ubuntu 12.04
and PG 9.1, I've modified pg_ctlcluster to cause pg_ctl to use a wrapper
script which starts the postmaster using a numactl wrapper, but all
subsequent client processes are started with interleaving enabled as
well. Any ideas how to make just the postmaster process start with
interleaving?

Thanks

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