New subject: [suse-amd64] Quad opteron performance issues in suse 9

25 Jan 2004

      Hi Andreas, here is the error that the test kernel gives on boot:

VFS: cannot open root device "sda2" or unknown block (2,0)

Thats the panic error, the reiser file system and megaraid controller had
loaded prior to the error.  I installed mkinitrd-1.0-110.x86_64.rpm update
from the /pub/people/kraxel.

Any ideas?

-----Original Message-----
From: Jason Clark [mailto:jason@anandtech.com] 
Sent: Sunday, January 25, 2004 2:54 PM
To: 'Andreas Jaeger'
Cc: 'suse-amd64@suse.com'
Subject: RE: [suse-amd64] Quad opteron performance issues in suse 9

If you mean this readme: ftp://ftp.suse.com/pub/people/kraxel/README

No, I just rpm installed the kernel and rebooted.  Excuse the lack of
experience, some questions:

1. Where does one find these updated rpms? I found
mkinitrd-1.0-110.x86_64.rpm, but can't find aaa_base or modutils.

2. after those modules are installed is it just rpm -Uvh kernel.rpm?

When I ran it the first time it updated the bootloader itself.  Again excuse
the basic questions, but this is a first for me.

Cheers

-----Original Message-----
From: Andreas Jaeger [mailto:aj@suse.de] 
Sent: Sunday, January 25, 2004 2:34 PM
To: Jason Clark
Cc: suse-amd64@suse.com
Subject: Re: [suse-amd64] Quad opteron performance issues in suse 9

"Jason Clark"  writes:
...
Yep, I gave kernel-smp-26-2.6.1-5.x86_64.rpm a try and got a kernel mode
panic, something about the file system.  I'm using an lsi logic 320-2
With the exact message, we might be able to help.   I hope you set up
the modules according to the README.
...
megaraid controller, suse is installed on a resier file system on an array
off the lsi logic.
And that lsi logic is loaded correctly?

Andreas
...
Cheers.
-----Original Message-----
From: Andreas Jaeger [mailto:aj@suse.de] 
Sent: Sunday, January 25, 2004 2:04 PM
To: Jason Clark
Subject: Re: [suse-amd64] Quad opteron performance issues in suse 9
"Jason Clark"  writes:
...
Are there any 2.6 kernels available for suse 9, pre-built?  Haven't had a
whole lot of luck building one.
Yes, there are - in ftp.suse.com/pub/people/kraxel
Andreas
...
Cheers
-----Original Message-----
From: Andreas Jaeger [mailto:aj@suse.de] 
Sent: Sunday, January 25, 2004 9:37 AM
To: Jason Clark
Cc: suse-amd64@suse.com
Subject: Re: [suse-amd64] Quad opteron performance issues in suse 9
"Jason Clark"  writes:
...
I've been playing around with Suse 9 AMD64 for the past few days, trying
some canned benchmarks and one that we've constructed.  So far, I'm not
seeing any scaling from a dual opteron to a quad opteron on suse 9.
Most
of
the tests I've tried are based off of mysql.  During the quad cpu tests
each
cpu was averaging at least 90%, same as the dual cpu tests.  Is the 2.4
kernel ok for quad opterons, or is 2.6 required?
The kernel is fine for 4 ways and it scales with our experiments.
The 2.6 kernel is far less locks than 2.4 so depending on your tests,
updating might make a difference.
...
A side issue, for some reason you cannot install the rpm binaries of
mysql
...
4.0.17 without getting a segmentation fault.  So all of the mysql
testing
Please tell that to those that did the rpms...
...
was done on 4.0.15, included with suse 9.
-- 
 Andreas Jaeger, aj@suse.de, http://www.suse.de/~aj
  SuSE Linux AG, Maxfeldstr. 5, 90409 Nürnberg, Germany
   GPG fingerprint = 93A3 365E CE47 B889 DF7F  FED1 389A 563C C272 A126

RE: [suse-amd64] Quad opteron performance issues in suse 9

Jason Clark

Andreas Jaeger

Jason Clark

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