From: Kevin Grittner <Kevin.Grittner@wicourts.gov>
To: pgsql-performance@postgresql.org
To: Mario Weilguni <mweilguni@sime.com>
Subject: Re: Experience with HP Smart Array P400 and SATA drives?
Date: Fri, 05 Dec 2008 16:48:23 -0600
Message-ID: <49395B57.EE98.0025.0@wicourts.gov> (raw)
In-Reply-To: <4934FE60.30702@sime.com>
References: <4934FE60.30702@sime.com>
>>> Mario Weilguni <mweilguni@sime.com> wrote:
> Has anyone benchmarked this controller (PCIe/4x, 512 MB BBC)? We try
to
> use it with 8x SATA 1TB drives in RAID-5 mode under Linux, and
measure
> strange values. An individual drive is capable of delivering 91
MB/sec
> sequential read performance, and we get values ~102MB/sec out of a
> 8-drive RAID5, seems to be ridiculous slow. Write performance seems
to
> be much better, ~300 MB /sec - seems ok to me.
What's your stripe size?
-Kevin
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To: pgsql-performance@postgresql.org
Cc: Kevin.Grittner@wicourts.gov, mweilguni@sime.com
Subject: Re: Experience with HP Smart Array P400 and SATA drives?
In-Reply-To: <49395B57.EE98.0025.0@wicourts.gov>
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