Hi ALL, How to adjust the xfs and raid parameters to improve the total performance when RAID5 created by 8 disks works with xfs, and i writed a test program, which started 100 threads to write big files, 500MB per file, and delete it after writing finish. Thank you very much. Best Wishes, Daobang Wang. -- 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