From: Jim C. Nasby <jnasby@pervasive.com>
To: Luke Lonergan <llonergan@greenplum.com>
Cc: Mike Biamonte <mike@dbeat.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: Huge Data sets, simple queries
Date: Tue, 31 Jan 2006 20:47:03 -0600
Message-ID: <20060201024703.GT95850@pervasive.com> (raw)
In-Reply-To: <C005308A.1B642%llonergan@greenplum.com>
References: <20060131231227.GP95850@pervasive.com>
<C005308A.1B642%llonergan@greenplum.com>
On Tue, Jan 31, 2006 at 03:19:38PM -0800, Luke Lonergan wrote:
> > Well, the only problem with that is if the machine crashes for any
> > reason you risk having the database corrupted (or at best losing some
> > committed transactions).
>
> So, do you routinely turn off Linux write caching? If not, then there's no
> difference.
My thought was about fsync on WAL; if you're doing much writing then
a good raid write cache with BBU will improve performance.
--
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, llonergan@greenplum.com, mike@dbeat.com
Subject: Re: Huge Data sets, simple queries
In-Reply-To: <20060201024703.GT95850@pervasive.com>
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