2013/8/20 Liu Yuan <namei.unix at gmail.com>: > For simple test, you can start sheep with '-n' option and see how dd performs > in the guest. sheep -n ... qemu-system-x86_64 and cache=directsync,if=virtio dd if=/dev/zero of=c bs=1M count=512 oflag=direct Mmmm...I was expecting very high performance, but I get steadily 15 M/s.