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Re: 3w-9xxx module version in FC4



On Fri, 29 Apr 2005 at 10:14am, jkeating 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


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