From: Joost Kraaijeveld <J.Kraaijeveld@Askesis.nl>
To: Luke Lonergan <llonergan@greenplum.com>
Cc: Dave Cramer <pg@fastcrypt.com>
Cc: Pgsql-Performance <pgsql-performance@postgresql.org>
Subject: Re: Performance PG 8.0 on dual opteron / 4GB / 3ware
Date: Wed, 16 Nov 2005 11:17:05 +0100
Message-ID: <1132136225.5711.4.camel@Panoramix> (raw)
In-Reply-To: <BF9F6C0E.13B4A%llonergan@greenplum.com>
References: <BF9F6C0E.13B4A%llonergan@greenplum.com>
Hi Luke,
> It is very important with the 3Ware cards to match the driver to the
> firmware revision.
> So, if you can get your ´dd bigfile¡ test to write data at 50MB/s+
> with a blocksize of 8KB, you should be doing well enough.
I recompiled my kernel, added the driver and:
jkr@Panoramix:~$ dmesg | grep 3w
3ware 9000 Storage Controller device driver for Linux v2.26.03.019fw.
scsi4 : 3ware 9000 Storage Controller
3w-9xxx: scsi4: Found a 3ware 9000 Storage Controller at 0xfd8ffc00,
IRQ: 28.
3w-9xxx: scsi4: Firmware FE9X 2.08.00.005, BIOS BE9X 2.03.01.052, Ports:
8.
jkr@Panoramix:~/tmp$ dd if=/dev/zero of=bigfile bs=8k count=1000000
1000000+0 records in
1000000+0 records out
8192000000 bytes transferred in 200.982055 seconds (40759858 bytes/sec)
Which is an remarkable increase in speed (38.9 MB/sec vs 25.7 MB/sec).
Thanks for your suggestions.
--
Groeten,
Joost Kraaijeveld
Askesis B.V.
Molukkenstraat 14
6524NB Nijmegen
tel: 024-3888063 / 06-51855277
fax: 024-3608416
e-mail: J.Kraaijeveld@Askesis.nl
web: www.askesis.nl
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To: pgsql-performance@postgresql.org
Cc: J.Kraaijeveld@Askesis.nl, llonergan@greenplum.com, pg@fastcrypt.com
Subject: Re: Performance PG 8.0 on dual opteron / 4GB / 3ware
In-Reply-To: <1132136225.5711.4.camel@Panoramix>
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