From: Michael Stone <mstone+postgres@mathom.us>
To: pgsql-performance@postgresql.org, Wu Fengguang <wfg@mail.ustc.edu.cn>
Subject: Re: Introducing a new linux readahead framework
Date: Thu, 27 Apr 2006 07:43:42 -0400
Message-ID: <20060427114340.GE31328@mathom.us> (raw)
In-Reply-To: <20060426144347.GA31328@mathom.us>
References: <20060421013826.GA5217@mail.ustc.edu.cn>
<20060426144347.GA31328@mathom.us>
On Wed, Apr 26, 2006 at 10:43:48AM -0400, Michael Stone wrote:
>patch a 512k blocksize would get ~100MB/s. I'm now watching to see how
>it does over a couple of days on real-world workloads.
I've got one DB where the VACUUM ANALYZE generally takes 11M-12M ms;
with the patch the job took 1.7M ms. Another VACUUM that normally takes
between 300k-500k ms took 150k. Definately a promising addition.
Mike Stone
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To: pgsql-performance@postgresql.org
Cc: mstone+postgres@mathom.us, wfg@mail.ustc.edu.cn
Subject: Re: Introducing a new linux readahead framework
In-Reply-To: <20060427114340.GE31328@mathom.us>
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