On Thu, 2013-05-09 at 16:21 +0800, Kevin Hao wrote: > > Is it because that we cannot afford to lose perfmon interrupt for > more accurate capturing of data ? > > Yes, I think this will definitely improve the perf sample quality. This is one of the primary reason why we implemented lazy disabling in the first place and why I recently reworked it to decrease the periods where we are hard disabled. The other reasons are that storing bytes to the PACA is faster than manipulating EE on many processors. Cheers, Ben. -- 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
