RE: [Xen-devel] A clocksource question

[Dan Magenheimer <dan.magenheimer@xxxxxxxxxx>]

On many machines, HPET is disabled by default, but can be
enabled in the pre-boot BIOS configuration screens.

> -----Original Message-----
> From: Tobias Geiger [mailto:tobias.geiger@xxxxxxxxx]
> Sent: Wednesday, March 17, 2010 7:36 AM
> To: Joanna Rutkowska
> Cc: Jeremy Fitzhardinge; xen-devel@xxxxxxxxxxxxxxxxxxx
> Subject: Re: [Xen-devel] A clocksource question
> 
> Hi,
> 
> i also compiled 2.6.32.9 from xen/stable , but so far i can't see much
> improvement.
> 
> Still many small hiccups in Dom0
> One time (i think after HVM DomU creation) i get:
> "hrtimer: interrupt took 4045137 ns" in Dom0 dmesg
> 
> I also upgraded to newest xen-unstable:
> xen_changeset          : Wed Mar 17 09:18:34 2010 +0000
> 21041:066c3eead6ec
> 
> 
> Could it be that the missing HPET is causing all this trouble? I just
> noticed
> that in "xm dmesg" :
> 
> (XEN) CPUIDLE: disabled due to no HPET. Force enable with
> \047cpuidle\047.
> 
> I don't bother really about CPUIDLE, but i should perhaps about HPET ?
> Is there a reason xen doesn't enable HPET? Motherboard is Intel DX58SO
> 
> Thanks for your input
> 
> Greetings
> Tobias
> 
> 
> 
> 
> 
> Am Dienstag 16 März 2010 07:01:44 schrieb Joanna Rutkowska:
> > FWIW, I have finally built and now I'm testing the recent
> > xen/stable-2.6.32.x with the hrtimer commit and it seems to be
> working
> > fine. No hiccups.
> >
> 
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