I can't seem to get the read and write performance better than approximately 40MB/s on an ext2 file system. IMO, this is horrible performance for a 6-drive, hardware RAID 5 array. Please have a look at what I'm doing and let me know if anybody has any suggestions on how to improve the performance...
System specs: ----------------- 2 x 2.8GHz Xeons 6GB RAM 1 3ware 9500S-12 2 x 6-drive, RAID 5 arrays with a stripe size of 256KB. Each array is 2.3TB after formatting. ioscheduler set to use the deadline scheduler.
mkfs.ext2 options used: ------------------------ mkfs.ext2 -b 4096 -L /d01 -m 1 -O sparse_super,dir_index -R stride=64 -T largefile /dev/sda1
I'm using a stride size of 64 since the ext2 block size is 4KB and the array stripe size is 256KB (256/4 = 64).
Output of using bonnie++: --------------------------- $ /usr/local/bonnie++/sbin/bonnie++ -d /d01/test -r 6144 -m anchor_ext2_4k_64s Version 1.03 ------Sequential Output------ --Sequential Input- --Random- -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks-- Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP anchor_ext2_4k_ 12G 41654 96 41937 11 30537 8 40676 88 233015 27 426.6 1 ------Sequential Create------ --------Random Create-------- -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete-- files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP 16 3369 83 +++++ +++ +++++ +++ 4142 100 +++++ +++ 11728 100
Cheers! Sean