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RE: [Xen-users] priority of dom0?


  • To: "Sven Köhler" <skoehler@xxxxxx>, xen-users@xxxxxxxxxxxxxxxxxxx
  • From: "Petersson, Mats" <Mats.Petersson@xxxxxxx>
  • Date: Fri, 3 Nov 2006 16:21:31 +0100
  • Delivery-date: Fri, 03 Nov 2006 07:22:22 -0800
  • List-id: Xen user discussion <xen-users.lists.xensource.com>
  • Thread-index: Acb/Woubgt9Bsi+MTAuQoFj079lcRAAALL6Q
  • Thread-topic: [Xen-users] priority of dom0?

 

> -----Original Message-----
> From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx 
> [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of 
> Sven Köhler
> Sent: 03 November 2006 15:05
> To: xen-users@xxxxxxxxxxxxxxxxxxx
> Subject: [Xen-users] priority of dom0?
> 
> Hi,
> 
> when i compile something in dom0, my domUs are more then 
> unresponsible.
> Any clue, what's going on? How can i change the "priority" of dom0? I
> think, that the CPU-time should be equally distributed 
> between the dom0
> and the domUs.

Whilst you can do this, the risk is that you get other problems if you do that 
(like one DomU running away and Dom0 not getting a chance to run instead :-( 
which is slightly worse, in case you would like to for example KILL that 
DomU!)...  You also want Dom0 to have a high priority (or to be able to run for 
as long as it needs) to be able to correctly and quickly respond to IO requests 
made on behalf of DomU's. Unfortunately, this counteracts the Dom0 being low 
priority...

It's probably a better idea to have a separate DomU that gets to do the 
compiling... 

--
Mats
> 
> 
> Thanks,
>   Sven
> 
> 



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