On 6.8.2014 20:44, Chuck Campbell wrote: > I have a raid 50 array on a 3ware controller. The box is running centos 6.5 and > the file system is ext4. > > I'm going to try some other filesystems, but could anyone suggest any > alternative raid setups as well as stripe sizes I should try? > > The old server uses the same controller on a centos 5.10 setup, using ext3, and > it performs much faster i/o. The old 3ware setup is raid 5. Do you have barriers enabled? Just another shot in the dark, but 5 didn't have that. If you have battery backed Cache with your Controller, you can safely disable barriers anyway. -- Kind Regards, Markus Falb