Am 11.05.2015 um 14:50 schrieb Christian Borntraeger: > s390 has a route per device, but with 100 virtio-blk devices the difference seem > pretty much on the "dont care" side. qemu aio-poll/drain code seems to cause > much more delay since we elimited the kernel delays by using > synchronize_srcu_expedited. This is ambiguous: My point is: qemu did not get slower, it was already slow and the kernel got fast enough that it is no longer the slowest part. -- 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