On Fri, 2012-09-28 at 06:40 -0500, Andrew Theurer wrote: > It will be interesting to see how this behaves with a very high lock > activity in a guest. Once the scheduler defers preemption, is it for > a > fixed amount of time, or does it know to cut the deferral short as > soon > as the lock depth is reduced [by x]? Since the locks live in a guest/userspace, we don't even know they're held at all, let alone when state changes. Also, afaik PLE simply exits the guest whenever you do a busy-wait, there's no guarantee its due to a lock at all, we could be waiting for a 'virtual' hardware resource or whatnot. -- 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
