On Sat, 30 Apr 2005 at 9:11am, jkeating@xxxxxxxxxxxxxxx wrote > On Fri, 2005-04-29 at 11:18 -0400, Joshua Baker-LePain wrote: > > > > 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: > > I can't help but wonder if the software RAID 0 is interfering with your > setup. Any chance you can test w/out the software RAID 0 involved? > Just a straight RAID 5 across 11 disks? No difference. This time, I tested with the stock kernel and ext3 (just so no one can argue that XFS and/or 8K stacks were the issue). So, this is tiobench on centos 4, 2.6.9-5.0.3smp, with the 9.1.5.2 firmware/stock driver vs. 9.2 firmware/driver: 9.1.5.2/stock: Read, 1 thread: 270.89 Read, 2 thread: 176.04 Read, 4 thread: 167.48 Read, 8 thread: 162.20 Write, 1 thread: 63.97 Write, 2 thread: 66.38 Write, 4 thread: 61.64 Write, 8 thread: 63.21 9.2: Read, 1 thread: 269.70 Read, 2 thread: 199.13 Read, 4 thread: 177.69 Read, 8 thread: 153.60 Write, 1 thread: 18.26 Write, 2 thread: 18.74 Write, 4 thread: 18.31 Write, 8 thread: 18.77 For completeness' sake, here are the XFS numbers (as usual, better than ext3): 9.1.5.2/stock: Read, 1 thread: 239.74 Read, 2 thread: 360.29 Read, 4 thread: 324.12 Read, 8 thread: 276.95 Write, 1 thread: 90.10 Write, 2 thread: 94.25 Write, 4 thread: 90.69 Write, 8 thread: 83.18 9.2: Read, 1 thread: 367.44 Read, 2 thread: 338.09 Read, 4 thread: 306.44 Read, 8 thread: 240.73 Write, 1 thread: 23.33 Write, 2 thread: 22.89 Write, 4 thread: 19.11 Write, 8 thread: 19.43 -- Joshua Baker-LePain Department of Biomedical Engineering Duke University -- fedora-devel-list mailing list fedora-devel-list@xxxxxxxxxx http://www.redhat.com/mailman/listinfo/fedora-devel-list
