On 07/05/12 01:52, Nicholas A. Bellinger wrote: > fio randrw workload | virtio-scsi-raw | virtio-scsi+tcm_vhost | bare-metal raw block > ------------------------------------------------------------------------------------ > 25 Write / 75 Read | ~15K | ~45K | ~70K > 75 Write / 25 Read | ~20K | ~55K | ~60K These numbers are interesting. To me these numbers mean that there is a huge performance bottleneck in the virtio-scsi-raw storage path. Why is the virtio-scsi-raw bandwidth only one third of the bare-metal raw block bandwidth ? Bart. -- 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