On Sun, Jul 01, 2012 at 11:13:42PM -0300, Roberto Spadim wrote: > nice =) very very nice =) > maybe to get better than this... select the disk with min(pending time) > > time could be estimated with something like: > (distance * time/distance unit) + (blocks to read/write * time to > read/write 1 block) + (non sequencial penalty time) I didn't think there is way to measure request time. Disks support NCQ, they can dispatch several requests at one time and finish them almost at the same time. I used to measure this time (to make CFQ ioscheduler self tune), but failed. Thanks, Shaohua -- 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
