> No, the first field is the major device number, and the third is the device > name .... > so I guess we are taking the same ratio, but you start counting at a > different place to me. yes you are right, i started counting after the device name :-) Sorry for the confusion > No. It might be worth exploring why the request sizes are different - I > don't know if it will lead anywhere useful though. Have someone else ever had a similar issue ? In the meanwhile i will do some more test, trying to play with blockdevice related parameters... Do you think that having the root partition mounted over /dev/md2 can influence the test results ? Marco -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html