On 11/05/2015 14:53, Christian Borntraeger wrote: > 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. Great, I'll apply the patch. 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