[PVE-User] System hangs / CPU 100% Windows 2008 Server

Martin Schuchmann ms at city-pc.de
Wed Sep 5 17:20:12 CEST 2012

Hi Alexandre,

The   /etc/pve/qemu-server/402.conf    does not contain any args: entry yet.

What is "args: -no-hpet" good for?

We used "Microsoft Windows Vista/2008 (w2k8)" as OS-type. When we tried 
a "Microsoft Windows 7/2008r2 (win7)" install, there occured different 
errors during the installation - but no worry on that, since it really 
is a non-r2 guest.

It is an 64bit with 12GB RAM and 8 Cores. Writing this email I get 
another thought: We upgraded a few weeks ago the vCPU-Cores from 4 to 8 
I think, and since we did that, the frequency of the freezes seems to 
rise from 3-4 weeks to at least every 10 days now.

We used the ide mode for some testing, but then decide to use the virtio 
since they seemed to be faster - and more reliable. But these decision 
was made during the first steps with proxmox, so maybe we did not get 
the real causes for the problems we have had.

I will update the BIOS again (will have to move the guests first, and 
should do the bios update only locally in the data center...) - and then 
maybe change to IDE Mode. Did you ever try to change back from virtio to 
ide? Does this work without a fresh install?

Thank you for your time spending here!

Regards, Martin

Alexandre DERUMIER <aderumier at odiso.com> schrieb am 05.09.2012 15:52:
>>> Also, have you tried to put "args: -no-hpet" in the vm config file?
> -no-hpet is already passed if you use win7/win2008 ostype in your vm config file
> Also is it win2008 32bit or x64 ?
> ----- Mail original -----
> De: "Massimo Santoro" <massimo at tuxel.com>
> À: "Martin Schuchmann" <ms at city-pc.de>
> Cc: pve-user at pve.proxmox.com
> Envoyé: Mercredi 5 Septembre 2012 14:37:15
> Objet: Re: [PVE-User] System hangs / CPU 100% Windows 2008 Server
> On 05/09/2012 13:52, Martin Schuchmann wrote:
>> Hi Massimo,
>> Thanks for that advice!
>> I have checked the bios and according to HP Support it is already a
>> corrected version from May 2011.
>> I think if it would be caused by a hardware error, the problem would
>> occur on other guests on this host also, or the complete host should
>> freeze up?
>> On the same machine is a Win 2008 SBS running - for 6 month without
>> any error.
>> The node which is freezing is used as a Terminalserver with about 5-10
>> active Users.
> We have several win2008 std (not r2) installations. Many of them
> suffered of system hangs (blue screen) or cpu 100% hangs while other
> guests were still running fine. Updating the bios solved all those issues.
> We found out though that the most stable setup is using IDE and e1000
> (no virtio devices). Have you tried this?
> Also, have you tried to put "args: -no-hpet" in the vm config file?
> Massimo Santoro

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