Phil, the 16k chunk size has really given a boost to my RAID 5 sequential write performance measured with fio, bs=1408k. This is what I was getting with a 128k chunk size: iodepth=4 => 605 MB/s iodepth=8 => 589 MB/s iodepth=16 => 634 MB/s iodepth=32 => 635 MB/s But this is what I'm getting with a 16k chunk size: iodepth=4 => 825 MB/s iodepth=8 => 810 MB/s iodepth=16 => 851 MB/s iodepth=32 => 866 MB/s -- 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
