From: Jim C. Nasby <jnasby@pervasive.com>
To: Ian Westmacott <ianw@intellivid.com>
Cc: Ron <rjpeace@earthlink.net>
Cc: pgsql-performance@postgresql.org
Subject: Re: improving write performance for logging
Date: Thu, 5 Jan 2006 19:08:22 -0600
Message-ID: <20060106010822.GK43311@pervasive.com> (raw)
In-Reply-To: <1136390438.24450.49.camel@spectre.intellivid.com>
References: <43BB0C5C.8020207@computer.org>
<1136382865.24450.7.camel@spectre.intellivid.com>
<7.0.1.0.2.20060104092139.01c37da0@earthlink.net>
<1136390438.24450.49.camel@spectre.intellivid.com>
On Wed, Jan 04, 2006 at 11:00:38AM -0500, Ian Westmacott wrote:
> The WAL is a 2-spindle (SATA) RAID0 with its own controller (ext3).
> The tables are on a 10-spindle (SCSI) RAID50 with dual U320
> controllers (XFS). This is overkill for writing and querying the data,
> but we need to constantly ANALYZE and VACUUM in the
> background without interrupting the inserts (the app is 24x7). The
> databases are 4TB, so these operations can be lengthy.
How come you're using RAID50 instead of just RAID0? Or was WAL being on
RAID0 a typo?
--
Jim C. Nasby, Sr. Engineering Consultant jnasby@pervasive.com
Pervasive Software http://pervasive.com work: 512-231-6117
vcard: http://jim.nasby.net/pervasive.vcf cell: 512-569-9461
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To: pgsql-performance@postgresql.org
Cc: jnasby@pervasive.com, ianw@intellivid.com, rjpeace@earthlink.net
Subject: Re: improving write performance for logging
In-Reply-To: <20060106010822.GK43311@pervasive.com>
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