On Tue, Jan 4, 2011 at 11:02 AM, Yoshiaki Tamura <tamura.yoshiaki@xxxxxxxxxxxxx> wrote: > After doing some heavy load tests, I realized that we have to > take a hybrid approach to replay for now. This is because when a > device moves to the next state (e.g. virtio decreases inuse) is > different between net and block. For example, virtio-net > decreases inuse upon returning from the net layer, but virtio-blk > does that inside of the callback. If we only use pio/mmio > replay, even though event-tap tries to replay net requests, some > get lost because the state has proceeded already. This doesn't > happen with block, because the state is still old enough to > replay. Note that using hybrid approach won't cause duplicated > requests on the secondary. Thanks Yoshi. I think I understand what you're saying. Stefan -- 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
