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SubjectRe: Nick's scheduler v16


Martin J. Bligh wrote:

>>I'm starting to do some large SMP / NUMA testing. Fixed and changed quite
>>a bit. It isn't too bad, although I'm only testing dbench, tbench, and
>>volanomark at the moment.
>>
>>These SMP and NUMA changes are not tied to my interactivity stuff, so its
>>possible they could get included if they turn out well. If you find any
>>problems with it (high end or interactivity), please let me know.
>>
>
>Interesting ... some things get getter, some worse:
>
>Kernbench: (make -j N vmlinux, where N = 2 x num_cpus)
> Elapsed System User CPU
> 2.6.0-test8 45.20 100.97 566.65 1476.25
> 2.6.0-test8-nick 44.81 93.98 568.49 1477.50
> 2.6.0-test8-nick2 44.78 94.69 568.81 1482.00
>
>elapsed is a tiny bit faster, system is significantly less, but with
>higher parallelism:
>
>
>Kernbench: (make -j vmlinux, maximal tasks)
> Elapsed System User CPU
> 2.6.0-test8 45.86 119.41 569.66 1502.00
> 2.6.0-test8-nick 47.00 112.75 590.40 1495.00
> 2.6.0-test8-nick2 47.11 112.86 590.31 1491.50
>
>elapsed is definitely worse now.
>

I'll see if I can reproduce this and work out what is going on.
Thanks Martin.


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