Messages in this thread | | | Date | Mon, 24 Sep 2012 18:10:48 +0200 | From | Avi Kivity <> | Subject | Re: [PATCH RFC 2/2] kvm: Be courteous to other VMs in overcommitted scenario in PLE handler |
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On 09/24/2012 06:05 PM, Peter Zijlstra wrote: > On Mon, 2012-09-24 at 17:58 +0200, Avi Kivity wrote: >> There is the TSC deadline timer mode of newer Intels. Programming the >> timer is a simple wrmsr, and it will fire immediately if it already >> expired. Unfortunately on AMDs it is not available, and on virtual >> hardware it will be slow (~1-2 usec). > > Its also still a LAPIC write -- disguised as an MSR though :/
It's probably a whole lot faster though.
> Also, who gives a hoot about virtual crap ;-)
I only mentioned it to see if your virtual crap detector is still working. Looks like it's still in top condition, low latency and 100% hit rate.
-- error compiling committee.c: too many arguments to function
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