On Tue, Apr 10, 2012 at 01:04:13PM +0300, Avi Kivity wrote: > On 04/09/2012 10:46 PM, Marcelo Tosatti wrote: > > Perhaps the mmu_lock hold times by get_dirty are a large component here? > > That's my concern, because it affects the scaling of migration for wider > guests. > > > If that can be alleviated, not only RO->RW faults benefit. > > Those are the most common types of faults on modern hardware, no? Depends on your workload, of course. If there is memory pressure, 0->PRESENT might be very frequent. My point is that reduction of mmu_lock contention is a good thing overall. -- 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
