On Wed, May 28, 2014 at 05:46:39PM +0530, Raghavendra K T wrote: > In virtualized environment there are mainly three problems > related to spinlocks that affect performance. > 1. LHP (lock holder preemption) > 2. Lock Waiter Preemption (LWP) > 3. Starvation/fairness > > Though ticketlocks solve the fairness problem, it worsens LWP, LHP problems. > pv-ticketlocks tried to address this. But we can further improve at the > cost of relaxed fairness. So I really hate the idea of having different locks for paravirt and normal kernels. And we're looking to move to that queued lock for normal kernels. -- 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
