[CentOS] Best mkfs.ext2 performance options on RAID5 in CentOS 4.2
Joshua Baker-LePain
jlb17 at duke.eduMon Oct 31 22:15:33 UTC 2005
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On Mon, 31 Oct 2005 at 4:10pm, Sean Staats wrote > 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. Make sure you are using the absolute latest firmware for the 3ware board (2.08.00.005). There is a bad cache allocation bug in previous firmwares that kills performance with more than one unit (as you have). -- Joshua Baker-LePain Department of Biomedical Engineering Duke University
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