On Fri, Dec 12, 2008 at 5:55 AM, Eric D. Mudama <edmudama@xxxxxxxxx> wrote: > On 12/11/08, Eric D. Mudama <edmudama@xxxxxxxxx> wrote: >> Out of curiosity, is write cache enabled or disabled on these devices? > > Oops, I just noticed the oflag=direct, that can have a huge > performance difference depending on the block size. > > What numbers are you getting without oflag=direct? IMHO repeating the measurements without oflag=direct does not make sense: measurements with oflag=direct tell something about the performance of the SSD and the software layers on top of it. Without oflag=direct writes are buffered by Linux and data is written asynchronously to the SSD. Bart. -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
