I just tried a 3.8 series kernel and can now get 25mbytes/second using dd with a 4mb block size, instead of the 700kbytes/second I was getting with the debian 3.2 kernel. I'm still getting 120kbytes/second with a dd 4kb block size though... is that expected? James -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html