On Tue, Aug 20, 2013 at 10:09:40AM +0200, Valerio Pachera wrote: > 2013/8/20 Kai Zhang <kyle at zelin.io>: > > Would you like to show us the raw performance on the physical machine? > > > root at test004:/mnt/sheep/dsk02# dd if=/dev/zero of=c bs=1M count=512 oflag=direct > 512+0 record dentro > 512+0 record fuori > 536870912 byte (537 MB) copiati, 3,92691 s, 137 MB/s This might be not fair because for host backend write, we add 'sync' for sheep to assure data written in the persistent medium of disk. How about 'dd if=/dev/zero of=c bs=1M count=512 oflag=direct,sync' in host? Thanks Yuan |