Re: [PATCH] xen: Implement domain runstates

[Keir Fraser <keir@xen.org>]

On 25/11/2010 19:11, "Ian Jackson" <Ian.Jackson@eu.citrix.com> wrote:

> George Dunlap writes ("Re: [Xen-devel] [PATCH] xen: Implement domain
> runstates"):
>> I wouldn't offer to put it in xentop just because I wanted to get the
>> patch out of the patchqueue.  I think it's a useful feature, that many
>> people would use if they knew about it.  If I didn't think it was
>> useful, by far the simplest way to get it out of the patchqueue would be
>> to simply remove the functionality from the next release of XenServer.
> 
> FWIW I think this sounds like a useful thing to have in xentop on its
> own account, not just to satisfy Keir's (sensible) requirement.

My further fear about domain runstates is that it adds an extra cost on
every VCPU schedule/deschedule, linear in number of vcpus. We want to keep
that path short, not add extra accounting crap to it.

 -- Keir

> Ian.
> 
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