Re: [Xen-ia64-devel] Event channel vs current scheme speed [wasvIOSAPIC and IRQs delivery]

[Tristan Gingold <Tristan.Gingold@xxxxxxxx>]

Le Jeudi 09 Mars 2006 21:02, Tian, Kevin a écrit :
> Anyway, good discussion by far though still some way to go for
> consensus. :-)
>
> Maybe we want to look at this from another way - fairness.
Good.

[...]
> Since above two groups are now in a plain layer, and described by
> consistent evtchn_pending bit, it's possible and easy for event dispatcher
> to allocate priority globally.
I agree the current model has implicit priorities.

But I am a little bit skeptical how the priority argument.  As far as I 
understand, in Xen or in Linux first asked is first priority.

> All in all, above long context is just one factor that I view to choose the
> proper mechanism. :-)
If you are that worried about priorities, we way find solution in the current 
scheme.  I'd just like to understand why priorities are that important.

Tristan.


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