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

"Jason Clark" writes:

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

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

That’s 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?

Missing module for the disk. You did not update modules.conf correctly, Andreas

-----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 -- 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