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Re: [Xen-users] Scheduling questions

from [Tim Freeman]

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Subject:	Re: [Xen-users] Scheduling questions
From:	Tim Freeman <tfreeman@xxxxxxxxxxx>
Date:	Tue, 10 Jan 2006 14:35:18 -0600
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On Tue, 10 Jan 2006 12:31:12 -0600
Tim Freeman <tfreeman@xxxxxxxxxxx> wrote:

> On Tue, 10 Jan 2006 18:48:40 +0100
> Michael Heyse <mhk@xxxxxxxxxxxxxxxxx> wrote:
> 
> > Hi,
> > 
> > where can I find some information about how xen-3's schedulers work and
> > their parameters? The default setup completely locks up all domU domains
> > on my machine (VIA Nehemiah EPIA board) whenever the dom0 domain is
> > doing CPU/IO-intensive stuff, and the only solution I found so far is to
> > adjust the weight of each domain (eg xm sched-sedf <domID> 0 0 0 0 1 for
> > each domain) but this seems to be a waste of CPU capacity.
> 
> The second to last parameter is an extra_time flag that allows a domain to use
> extra CPU time if it is available.  Change that to '1' to allow domains to use
> any idle CPU during the scheduling period (you must do so from dom0 as well). 

Sorry, a typo, I meant "for dom0" not "from dom0" (although the change indeed
must be done from dom0). 

Tim 




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