Re: [Xen-users] Scheduling questions

[Tim Freeman <tfreeman@xxxxxxxxxxx>]

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). 

Tim 



> 
> I read
> 
> sedf_scheduler_mini-HOWTO.txt
> http://wiki.xensource.com/xenwiki/Scheduling
> man xm
> 
> but none of them give enough information for me to know what to do. I'd
> apprechiate any pointers.
> 
> Thanks,
> Michael
> 
> _______________________________________________
> Xen-users mailing list
> Xen-users@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-users
> 

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