Server freezes when in Dom-0 / xen 3.2

Karl F. Larsen klarsen1 at
Sat Dec 13 18:40:38 UTC 2008

Florian Primessnig wrote:
> Steve Flynn schrieb:
>> On Fri, Dec 12, 2008 at 4:09 PM, Florian Primessnig <florian at> wrote:
>>> hey group,
>>> i got a rly nasty problem here.
>>> i got a amd64 server running ubuntu hardy LTS with latest kernel
>>> 2.6.24-22-xen and xen 3.2 in Domain-0.
>>> The server "freezes" randomly, by freezing i mean there is no log in
>>> syslog or any other log, nothing onscreen, no kernel panic, just freeze.
>> You've performed a full memtest86 check of your RAM to confirm its good?
> yes i did a full memtest.
> somehow i finally got some error logs shortly before the freeze happens 
> by disabling usb hub in bios - rly strange. as mentioned before if i 
> boot up the normal 2.6.24-22 kernel without running in xen dom0 all 
> works perfectly fine.
    It sounds like some part of your computer is getting too hot and 
then failing. This leaves no log entry and it could be something 
stressed when you run xendom0 whatever that is. I googled xen dom0 and 
found it speeds up your server and that makes me even more certain your 
computer is getting too hot. I would check around the CPU.



	Karl F. Larsen, AKA K5DI
	Linux User
   PGP 4208 4D6E 595F 22B9 FF1C  ECB6 4A3C 2C54 FE23 53A7

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