AMI megaraid performance (was: RE: Dell release of Redhat 7.2)

Seth Mos knuffie at xs4all.nl
Thu Nov 8 07:51:00 CST 2001


At 08:32 8-11-2001 -0600, Matt_Domsch at dell.com wrote:
> > Does Dell intend to release  Redhat Linux 7.2 System Builder
> > Edition validated for Dell PowerEdge Servers?  If so when?

The dutch version of the site has the 7.2 version in the options which is 
the retail version I presume. I saw it in the 1550 config&buy screen.

On another note, the newer 1.61j firmware for the PERC2/3 card is a decent 
speed improvement on raid 10 arrays. We just got a 13MB/sec extra read 
speed (from 58MB/s to 71MB/s).

The amount of Random seeks was significantly reduced from 7500 to 5000

Bonnie 1.0    -------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
1.61j    2000 15568 100.0 38680 20.9 27593 17.6 13745 91.0 71393 18.5 
5001.7 23.8
1.57     2000 15572 100.0 38092 19.1 24619 16.0 12786 84.9 58874 14.7 
7541.5 26.4

RH Linux 7.1+XFS 6x72GB RAID 10 on AMI MegaRaid (493) dual 1.13Ghz 2Gb ram

Cheers
Seth
--
Seth
Every program has two purposes one for which
it was written and another for which it wasn't
I use the last kind.




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