From: Luke Lonergan <llonergan@greenplum.com>
To: Jim C. Nasby <jnasby@pervasive.com>
Cc: Miguel <mmiranda@123.com.sv>
Cc: Postgresql Performance <pgsql-performance@postgresql.org>
Subject: Re: Best OS & Configuration for Dual Xeon w/4GB &
Date: Tue, 21 Mar 2006 07:25:07 -0800
Message-ID: <C0455AD3.1FA81%llonergan@greenplum.com> (raw)
In-Reply-To: <20060321114937.GL15742@pervasive.com>
Jim,
On 3/21/06 3:49 AM, "Jim C. Nasby" <jnasby@pervasive.com> wrote:
> No, I don't know why the transfer rates for the mirror are 1/2 that as the raw
> device. :(
Well - lessee. Would those drives be attached to a Silicon Image (SII) SATA
controller? A Highpoint?
I found in testing about 2 years ago that under Linux (looks like you're
BSD), most SATA controllers other than the Intel PIIX are horribly broken
from a performance standpoint, probably due to bad drivers but I'm not sure.
Now I think whatever is commonly used by Nforce 4 implementations seems to
work ok, but we don't count on them for RAID configurations yet.
- Luke
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To: pgsql-performance@postgresql.org
Cc: llonergan@greenplum.com, jnasby@pervasive.com, mmiranda@123.com.sv
Subject: Re: Best OS & Configuration for Dual Xeon w/4GB &
In-Reply-To: <C0455AD3.1FA81%llonergan@greenplum.com>
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