Messages in this thread | | | Date | Tue, 13 Mar 2007 12:37:53 -0400 | From | Rik van Riel <> | Subject | Re: [PATCH 2/9] Sched clock paravirt op fix.patch |
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Andi Kleen wrote: > On Tue, Mar 13, 2007 at 09:07:09AM -0700, Chris Wright wrote: >> * Jeremy Fitzhardinge (jeremy@goop.org) wrote: >>> In other words, regardless of whether this particular pv_op lives or >>> dies, we're going to need to have to deal with stolen time properly. I >>> think this hook is reasonable and useful step towards doing that. >> Exactly. Normal interrupts we can handle. Having CPU completely >> disappear for unkown time periods we can't, and will need to. > > But that is just what a interrupt is.
Interrupts tend to be reasonably short though.
Steal time can be several hypervisor/host time slices long.
As an aside, normal interrupts *are* accounted for separately in /proc/stat, so why not steal time too?
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