On Tue, Feb 21, 2012 at 11:59:23AM +0100, Peter Lieven wrote: > On 21.02.2012 11:56, Gleb Natapov wrote: > >On Tue, Feb 21, 2012 at 11:50:47AM +0100, Peter Lieven wrote: > >>>I hope it will make Windows use TSC instead, but you can't be sure > >>>about anything with Windows :( > >>Whatever it does now it eates more CPU has almost equal > >>number of exits and throughput is about the same (15MB/s). > >>If pmtimer is at 0xb008 it still reads it like hell. > >> > >>I checked with bcedit /v that useplatformclock is set to "No". > >Yeah, today I noticed that it is likely virtio drivers that hammer > >on PM timer (at least rip of the instruction that access it is > >very close to rip of the instruction that access virtio pio). > >Vadim, Windows driver developer, is CCed. > Ok, I will switch to IDE and e1000 to confirm this? Or does it not > make sense? > It make perfect sense! Please try it. -- Gleb. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
