* Srikar Dronamraju <sri...@linux.vnet.ibm.com> [2013-06-28 19:24:22]:
> * Mel Gorman <mgor...@suse.de> [2013-06-26 15:37:59]:
>
> > It's several months overdue and everything was quiet after 3.8 came out
> > but I recently had a chance to revisit automatic NUMA balancing for a few
> > days. I looked at basic scheduler integration resulting in the following
> > small series. Much of the following is heavily based on the numacore series
> > which in itself takes part of the autonuma series from back in November. In
> > particular it borrows heavily from Peter Ziljstra's work in "sched, numa,
> > mm: Add adaptive NUMA affinity support" but deviates too much to preserve
> > Signed-off-bys. As before, if the relevant authors are ok with it I'll
> > add Signed-off-bys (or add them yourselves if you pick the patches up).
>
>
> Here is a snapshot of the results of running autonuma-benchmark running on 8
> node 64 cpu system with hyper threading disabled. Ran 5 iterations for each
> setup
>
> KernelVersion: 3.9.0-mainline_v39+()
> Testcase: Min Max Avg
> numa01: 1784.16 1864.15 1800.16
> numa02: 32.07 32.72 32.59
>
> KernelVersion: 3.9.0-mainline_v39+() + mel's patches
> Testcase: Min Max Avg %Change
> numa01: 1752.48 1859.60 1785.60 0.82%
> numa02: 47.21 60.58 53.43 -39.00%
>
> So numa02 case; we see a degradation of around 39%.
>
I reran the tests again
KernelVersion: 3.9.0-mainline_v39+()
Testcase: Min Max Avg
numa01: 1784.16 1864.15 1800.16
numa01_THREAD_ALLOC: 293.75 315.35 311.03
numa02: 32.07 32.72 32.59
numa02_SMT: 39.27 39.79 39.69
KernelVersion: 3.9.0-mainline_v39+() + your patches
Testcase: Min Max Avg %Change
numa01: 1720.40 1876.89 1767.75 1.83%
numa01_THREAD_ALLOC: 464.34 554.82 496.64 -37.37%
numa02: 52.02 58.57 56.21 -42.02%
numa02_SMT: 42.07 52.64 47.33 -16.14%
--
Thanks and Regards
Srikar Dronamraju
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