On Fri, 29 Apr 2005 at 10:14am, jkeating(a)j2solutions.net wrote
> useful for. The '9.2' release does have significant performance
> increases (firmware and driver need to be updated) but I don't think
Err, really? I saw exactly the opposite. Now, this was on centos 4, but
these numbers are for a software RAID0 across 2 9500-12 cards in 11 disk
RAID5 mode. I'd also done 'blockdev --setra 16384' on both 3ware
devices, and this is with a kernel modified to include XFS:
9.1.5.2 firmware and stock centos 4 driver (tiobench, units are MB/s):
Read, 1 thread: 428.8
Read, 2 thread: 586.7
Read, 4 thread: 541.5
Read, 8 thread: 462.9
Write, 1 thread: 151.7
Write, 2 thread: 156.8
Write, 4 thread: 148.6
Write, 8 thread: 148.5
9.2 firmware and drivers:
Read, 1 thread: 433.4
Read, 2 thread: 608.1
Read, 4 thread: 508.6
Read, 8 thread: 398.6
Write, 1 thread: 33.7
Write, 2 thread: 31.6
Write, 4 thread: 31.4
Write, 8 thread: 30.5
The bonnie++ results look even worse:
"Old" codeset:
Read: 340.6
Write: 173.5
"New" codeset:
Read: 134.5
Write: 35.6
--
Joshua Baker-LePain
Department of Biomedical Engineering
Duke University