On Thu, Nov 18, 2010 at 11:24 PM, Alexander Graf <ag...@suse.de> wrote: > linux-uztg:~ # dd if=/dev/sdc of=/dev/null bs=10M count=300 iflag=direct
That's a big block size. bs=8k is interesting too because we see the per-request overhead. Since IDE, SATA, and virtio have different hardware interfaces that the guest drives we may see an interesting picture with small block sizes. Stefan
