On 10/28/2014 12:52 AM, Wanpeng Li wrote: > As you know, kernel build which Feng used is a CPU bound workload, > so why 22.28% samples is halt? Because in a CPU bound workload you don't have many exits in the first place. But there could also be some issues with the way he used perf. 213821 interrupts seem to be really few. Paolo -- 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