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SubjectRe: [RFC] block layer support for DMA IOMMU bypass mode II
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> On Mon, Jul 28, 2003 at 01:15:13PM +0200, Andi Kleen wrote:
> > Run it with 100-500 users (reaim -f workfile... -s 100 -e 500 -i 100)
> > I tested with ext3 on a single SCSI disk.
>
> andi, davem, jens,
> sorry for the long delay. Here's the data for ZX1 using u320 HBA
> (LSI 53c1030) and ST373453LC disk (running U160 IIRC).
> If you need more runs on this config, please ask.
>
> Executive summary: < %1 difference for this config.
>
> I'd still like to try a 53c1010 but don't have any installed right now.
> I suspect 53c1010 is alot less efficient at retrieving SG lists
> and will see a bigger difference in perf.
>
>
> One minor issue when starting re-aim-7, but not during the run:
>
> reaim(343): floating-point assist fault at ip 4000000000017a81, isr 0000020000000008
> reaim(343): floating-point assist fault at ip 4000000000017a61, isr 0000020000000008
>
>
> For the record, I retrieved source from:
> http://umn.dl.sourceforge.net/sourceforge/re-aim-7/reaim-0.1.8.tar.gz
>
> This should be renamed to osdl-aim-7 (or something like that).
> The name space collision is unfortunate and annoying.

Apoligies, the naming was not good.
I'll attempt to change it. ( i like osdl-aim-7 )
In the meantime, you can also get the source from

bk://developer.osdl.org/reaim
cliffw

>
> hth,
> grant
>
>
>
>
> #define BIO_VMERGE_BOUNDARY 0 /* (ia64_max_iommu_merge_mask + 1) */
> iota:/mnt# reaim -f /mnt/usr/local/share/reaim/workfile.new_dbase -s100 -e 500 -i 100
>
> REAIM Workload
> Times are in seconds - Child times from tms.cstime and tms.cutime
>
> Num Parent Child Child Jobs per Jobs/min/ Std_dev Std_dev JTI
> Forked Time SysTime UTime Minute Child Time Percent
> 100 110.25 12.67 206.35 5605.19 56.05 3.48 3.29 96
> 200 219.07 25.56 411.93 5642.06 28.21 7.83 3.73 96
> 300 327.59 38.23 615.83 5659.46 18.86 12.79 4.09 95
> 400 436.66 51.19 821.30 5661.19 14.15 18.34 4.42 95
> 500 548.21 65.76 1029.15 5636.54 11.27 23.34 4.47 95
> Max Jobs per Minute 5661.19
> iota:/mnt#
>
>
>
> #define BIO_VMERGE_BOUNDARY (ia64_max_iommu_merge_mask + 1)
>
> iota:/mnt# PATH=$PATH:/mnt/usr/local/bin
> iota:/mnt# reaim -f /mnt/usr/local/share/reaim/workfile.new_dbase -s100 -e 500 -i 100
>
> REAIM Workload
> Times are in seconds - Child times from tms.cstime and tms.cutime
>
> Num Parent Child Child Jobs per Jobs/min/ Std_dev Std_dev JTI
> Forked Time SysTime UTime Minute Child Time Percent
> 100 108.72 12.47 203.78 5684.17 56.84 4.46 4.32 95
> 200 217.64 25.59 408.90 5679.16 28.40 8.65 4.16 95
> 300 326.48 37.88 613.62 5678.81 18.93 13.80 4.44 95
> 400 434.87 50.53 817.64 5684.46 14.21 17.40 4.18 95
> 500 544.69 65.23 1022.92 5672.92 11.35 21.53 4.12 95
> Max Jobs per Minute 5684.46
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