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Re: Linux memory zone reclaim

From: Claudio Freire <klaussfreire(at)gmail(dot)com>
To: John Lister <john(dot)lister(at)kickstone(dot)com>
Cc: pgsql-performance(at)postgresql(dot)org
Subject: Re: Linux memory zone reclaim
Date: 2012-07-24 18:41:46
Message-ID: CAGTBQpacrSDcN10rTwRbH+AGm2_y0Qao6CJDoyvEp504iFbdrw@mail.gmail.com (view raw or flat)
Thread:
Lists: pgsql-performance
On Tue, Jul 24, 2012 at 3:36 PM, John Lister <john(dot)lister(at)kickstone(dot)com> wrote:
> 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?

postmaster should call numactl right after forking:
http://linux.die.net/man/2/set_mempolicy

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