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xen-ia64-devel
Re: [Xen-ia64-devel] Event channel vs current scheme speed [wasvIOSAPIC
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To: |
"Tian, Kevin" <kevin.tian@xxxxxxxxx>, "Dong, Eddie" <eddie.dong@xxxxxxxxx>, "Magenheimer, Dan \(HP Labs Fort Collins\)" <dan.magenheimer@xxxxxx>, <xen-ia64-devel@xxxxxxxxxxxxxxxxxxx> |
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Subject: |
Re: [Xen-ia64-devel] Event channel vs current scheme speed [wasvIOSAPIC and IRQs delivery] |
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From: |
Tristan Gingold <Tristan.Gingold@xxxxxxxx> |
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Date: |
Fri, 10 Mar 2006 11:53:13 +0100 |
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Fri, 10 Mar 2006 10:50:25 +0000 |
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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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