Il 14/03/2012 09:52, Zhang, Yang Z ha scritto: >>>>> Is there any comments with the version 3? >>> >>> Can you explain why you dropped the logic to set the timer to the >>> next event? > Do you mean why I change the rtc logic? The reason is that: When a > guest is idle, the main activity inside qemu is the rtc update > timer(2 per second). In our experience(running 64 rhel6u1 guests), it > will decrease pkg C6 residency about 6%(6% means 2 watts in my box). > And normally, the guest will not use the update-end interrupt and > alarm. So there has no need to run a periodic timer when guest isn't > using it. No, why you're keeping roughly the same logic as current QEMU, instead of the more radical changes that were in v2. 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
