From: Mario Weilguni <mweilguni@sime.com>
To: pgsql-performance@postgresql.org
Subject: Experience with HP Smart Array P400 and SATA drives?
Date: Tue, 02 Dec 2008 10:22:40 +0100
Message-ID: <4934FE60.30702@sime.com> (raw)
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.
I guess I must be doing something wrong, I cannot believe that a 500 €
controller is delivering such poor performance.
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To: pgsql-performance@postgresql.org
Cc: mweilguni@sime.com
Subject: Re: Experience with HP Smart Array P400 and SATA drives?
In-Reply-To: <4934FE60.30702@sime.com>
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