Subject: TR: Why Pstate could make NetBSD buggy ?
To: None <tech-kern@netbsd.org>
From: =?us-ascii?Q?Jerome_Loyet?= <jerome@loyet.net>
List: tech-kern
Date: 06/03/2006 02:31:19
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Hello,
I really need help on this :) Thx in advance.
www.dedibox.fr is a new dedicaded server provider in France. They build their
own server (base on VIA C7 on a custom motherboard). Every machine is the
same. There is only ONE difference: the version of the BIOS mplemented on the
motherboard. (see after)
Several persons have installed NetBSD 3.0 on those dedicated servers. A part
has a stable installation, the other part has a buggy installation. After
investigation, the ONLY difference is the version of the BIOS. and the
difference is:
The Pstate has been disabled on buggy BIOS and vcore as been augmented by
0.1v
The 2 BIOS are working fine on *Linux and FreeBSD but the newest is not on
NetBSD and OpenBSD
I've tested OpenBSD and the problem is exactly the same. OpenBSD is also buggy
with this BIOS revision.
The hardware is fine (long hardware test + intensive usage of the machine (via
make build, excessive tar, make kernel, and stress program). It's really an
NetBSD/OpenBSD problem.
I'm running NetBSD3.0-stable, the problems are:
Kernel panic
Machine is crashing
Many seg fault (signal 11)
You can find OpenBSD dmesg here:
The current dmesg is viewable here:
http://www.fatbsd.com/dedibox/dmesg.current
The 3.9 dmesg is viewable here:
http://www.fatbsd.com/dedibox/dmesg.stable
The diff between the two is viewable here:
You could also find a dmidecode output here:
http://www.fatbsd.com/dedibox/dmidecode.fat
(the only difference dmidecode on stable installation and on a buggy
installation is the release date of the bios, all the rest is identical)
I'd like to konw what is Pstate (I think it's Processus State but I'm not
sure) and what it's doing.
As it's a dedicated server, I've no access to the box. So after a kernel panic
I don't have access to the console and the only solution is to hard reboot
remotly. Is it possible to retreive informations about the crash (as nothing
appears in /var/log/message && dmesg of course)? (and how)
They don't want to change my bios version for now, so I'm available for
testing.
Thanks you very much in advance.
++ Jerome
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