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Date: Sat, 5 Jun 2010 08:53:40 +0700
From: "Anh Ky Huynh" <xkyanh@gmail.com>
To: RBN <rbn.ggl@gmail.com>
Cc: pgsql-admin@postgresql.org
Subject: Re: Filesystem and PG configuration
Message-ID: <20100605085340.76006e62@icy.localdomain>
In-Reply-To: <AANLkTimm49eoGIF44cy9FU1-OcXe6ekPNbzlQ6jHl__n@mail.gmail.com>
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On Fri, 4 Jun 2010 11:25:55 -0400
RBN <rbn.ggl@gmail.com> wrote:

> Can someone suggest some appropriate initial configuration
> parameters and shared memory settings for the following hardware?
> 
> I'm running Debian on a Dell with 4x6 core CPU and 128GB memory and
> writing to  a coraid with 9 x 32GB SSDs RAID 10 using jfs with 8
> drives active and 1 as spare.
> 
> I'm considering changing to xfs.  I'm not sure what block size to
> use for the file system, is 8192 appropriate?  The OS page size is
> 4096.
> 
> The database is both write and read intensive, with about 750MB of
> new data added per week and old deleted every six months to one
> year.

A good start:

Tuning: http://www.westnet.com/~gsmith/content/postgresql/pgbench-scaling.htm
Benchmark: http://edoceo.com/liber/db-postgresql-benchmark

Here's my benchmark on `m1.medium` instance of Amazon EC2:
	http://gx.viettug.org/zen/kyanh/jobs/pgbench0.jpg.html

Good luck,

-- 
Anh Ky Huynh