Re: Antw: Re: [suse-sles-e] Re: catastrophic disk-performance on SLES10 with SATA drives

From: matilda matilda (matilda_at_grandel.de)
Date: Wed Apr 04 2007 - 13:23:06 CEST

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Message-Id: <4613A6BC.117B.0044.0@grandel.de>
Date: Wed, 04 Apr 2007 13:23:06 +0200
From: "matilda matilda" <matilda@grandel.de>
Subject: Re: Antw: Re: [suse-sles-e] Re: catastrophic disk-performance	on SLES10 with SATA drives

Hi Markus,

you should try bonnie++ as this tools tries to do the benchmarks with
huge files to circumvent the effect of buffering. Compiling is very
easy.
And if you do that on both machines you get a really good picture.
(http://www.coker.com.au/bonnie++/)

What figures do you get with the incredible p-machine?

Best regards
Andreas

>>> Markus Roeffen <markus.roeffen@iws.uni-stuttgart.de> 04.04.2007
12:23 >>>
Hello Andreas,

I've made a few benchmarks with the tool "bonnie" (
http://www.textuality.com/bonnie/ ) and just wanted to post the
results.
I've taken the RAID 5 SCSI results with ext3 at
http://cc.jlab.org/docs/scicomp/benchmark/bonnie.html as reference
result.

Reference system (according to jlab.org):

    * Processors - Dual Intel Pentium III 1.26 GHz
    * Memory - 512 MBytes 133 MHz SDRAM ECC
    * Motherboard - Intel SDS2
    * RAID Controller - Mylex eXtremeRAID 2000 with 64 MBytes cache
    * Disk Drives - Seagate ST373405LC (Qty. 7)
    * RAID Configuration - RAID-5 (4 disks on channel-0 and 3 disks on
      channel-1)
    * File System = Ext3
    * OS - Red Hat 7.2, Linux Kernel 2.4.18-lkpc-4

So here's what I got:

-------Sequential Output-------- ---Sequential Input-- --Random--

-Per Char- --Block--- -Rewrite-- -Per Char- --Block---
--Seeks--

Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU
/sec %CPU

EXT3 1024 14452 92.6 14325 11.2 12192 8.5 13508 81.9 73031 19.8
673.4 4.5

intern 1*1024 52313 94.4 67747 13.4 31852 7.2 50010 81.3 89308 8.2
714.8 0.9

extern 1*1024 24031 44.4 37296 9.9 27341 7.0 52420 85.5 94305 9.5
961.2 2.1

EXT3 is the old PIII-system on jlab.org.

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