On Sun, 24 Nov 2013 22:45:59 -0500, Jim Salter wrote: > TL;DR scrub's ioprio argument isn't really helpful - a scrub murders > system performance til it's done. > > My system: > > 3.11 kernel (from Ubuntu Saucy) I don't run Ubuntu, but *maybe* they use the deadline IO scheduler by default, which does not handle IO priorities (by design). So maybe make sure your devices don't say "deadline" in /sys/block/sdX/queue/scheduler, and if they do, set them to cfq. -h -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
