Messages in this thread | | | Date | Tue, 10 Feb 2015 17:30:18 -0200 | From | Marcelo Tosatti <> | Subject | Re: [PATCH 2/2] KVM: x86: optimize delivery of TSC deadline timer interrupt |
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On Sat, Feb 07, 2015 at 09:33:09PM +0100, Paolo Bonzini wrote: > > Can remove another 300 cycles from do_div when programming LAPIC > > tscdeadline timer. > > Do you mean using something like lib/reciprocal_div.c?
Yes.
> Good idea, > though that's not latency, it's just being slow. :)
It adds to latency, yes (the guest will reprogram the APIC timer before resuming userspace execution).
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