Re: [Xen-devel] Why have an idle domain? (Was: IDLE domain is scheduled more than dom0)

[Rob Gardner <rob.gardner@xxxxxx>]

Magenheimer, Dan (HP Labs Fort Collins) wrote:

> What I propose is that domain0 become the idle domain.  Special
> casing code would be added to the schedulers so that domain0
> is always runnable and thus will absorb any "idle" cycles.
>  
This is admittedly not a grave concern, but doing what you propose will 
screw up performance accounting, since we won't know for sure how much 
cpu time dom0 is really using. And there is reason to believe that dom0 
cpu usage should be closely monitored.
Rob Gardner



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