Re: PGSQL, checkpoints, and file system syncs

From: Ilya Kosmodemiansky <ilya(dot)kosmodemiansky(at)postgresql-consulting(dot)com>
To: Reza Taheri <rtaheri(at)vmware(dot)com>
Cc: Heikki Linnakangas <hlinnakangas(at)vmware(dot)com>, "pgsql-performance(at)postgresql(dot)org" <pgsql-performance(at)postgresql(dot)org>
Subject: Re: PGSQL, checkpoints, and file system syncs
Date: 2014-04-04 06:11:49
Message-ID: CAG95seVOrb4JA0G2wbsgYBk8QC5PbdGL85xBMSsuu7CZexiOMA@mail.gmail.com
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Hi Reza,

vm.dirty_bytes indeed makes sense, but just in case: how exactly is
your ext4 mount? Particularly, have you disabled barrier?

Ilya

On Thu, Apr 3, 2014 at 8:11 PM, Reza Taheri <rtaheri(at)vmware(dot)com> wrote:
>> Try setting the vm.dirty_bytes sysctl. Something like 256MB might be a good
>> starting point.

--
Ilya Kosmodemiansky,

PostgreSQL-Consulting.com
tel. +14084142500
cell. +4915144336040
ik(at)postgresql-consulting(dot)com

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