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Re: 3ware + RAID5 + xfs performance

To: Harry Mangalam <hjm@xxxxxxxxx>
Subject: Re: 3ware + RAID5 + xfs performance
From: Jan-Frode Myklebust <Jan-Frode.Myklebust@xxxxxxxxxxx>
Date: Wed, 27 Jul 2005 11:21:04 +0200
Cc: gbakos@xxxxxxxxxxxxxxx, linux-raid@xxxxxxxxxxxxxxx, linux-xfs@xxxxxxxxxxx
In-reply-to: <200507252134.13869.hjm@xxxxxxxxx>
References: <Pine.SOL.4.58.0507252110320.2683@xxxxxxxxxxxxxxxxxxxxx> <200507252134.13869.hjm@xxxxxxxxx>
Sender: linux-xfs-bounce@xxxxxxxxxxx
On Mon, Jul 25, 2005 at 09:34:13PM -0700, Harry Mangalam wrote:
> I went thru the same hardware config gymnastics 

me too, but for RAID0, so here are my numbers for show-off, since I was 
quite impressed with them. HW is 3ware 8506-8 with 8 Maxtor 7Y250M0 250 GB
drives, on a dual 2.4 GHz Xeon with 2 GB memory. Running RHEL3 (probably
around update 1). 

3ware CLI> maint createunit c0 rraid0 k64k p0:1:2:3:4:5:6:7
# mkfs.xfs -d sunit=128,swidth=1024 -l logdev=/dev/hdb1,version=2,size=18065b 
-f  /dev/sda1 
# mount -o noatime,logbufs=8,logdev=/dev/hdb1 /dev/sda1 /mnt/sda1
% bonnie++ -f -x 5

> We are now considering adding a local PVFS2 system to a small cluster for 
> very 
> fast IO under MPI

We use IBM's GPFS for our cluster (85 dual opterons + 3 storage
nodes), and have only positive experience with it.. 


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