From: Simon Riggs <simon@2ndQuadrant.com>
To: Kevin Grittner <Kevin.Grittner@wicourts.gov>
Cc: pgsql-admin@postgresql.org
Subject: Re: 8.3.4 PITR recovery questions
Date: Thu, 30 Oct 2008 07:59:40 +0000
Message-ID: <1225353580.3971.353.camel@ebony.2ndQuadrant> (raw)
In-Reply-To: <48F8AA95.EE98.0025.0@wicourts.gov>
References: <48F8AA95.EE98.0025.0@wicourts.gov>
On Fri, 2008-10-17 at 15:09 -0500, Kevin Grittner wrote:
> In both cases it seemed to take longer to apply the WAL files during
> the recovery process than we're used to from 8.2 I don't have hard
> numbers, but before I spent time investigating I thought I would ask
> here if that is already a known issue.
We're doing a lot in 8.4 to improve performance. I'm allowing bgwriter
to be active, so that cleaning and restartpoints are handled
asynchronously. Koichi is releasing a patch to use readahead on the WAL
files. Taken together we might expect recovery to be at least twice as
fast on a 2+ CPU system.
--
Simon Riggs www.2ndQuadrant.com
PostgreSQL Training, Services and Support
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To: pgsql-admin@postgresql.org
Cc: simon@2ndQuadrant.com, Kevin.Grittner@wicourts.gov
Subject: Re: 8.3.4 PITR recovery questions
In-Reply-To: <1225353580.3971.353.camel@ebony.2ndQuadrant>
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