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). -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
