Re: [PATCH 0/8] Re: [PATCH] Add per-process flag to control thp

[Peter Zijlstra]

On Fri, Aug 16, 2013 at 09:33:56AM -0500, Alex Thorlton wrote:

> This first set of tests was run on the latest community kernel, with the
> vclear patches:
> 
> Kernel string: Kernel 3.11.0-rc5-medusa-00021-g1a15a96-dirty
> harp31-sys:/home/estes04/athorlton/Testing/progs/thp_benchmarks/321.equake_l# cat /sys/kernel/mm/transparent_hugepage/enabled
> [always] madvise never
> harp31-sys:/home/estes04/athorlton/Testing/progs/thp_benchmarks/321.equake_l# time ./run.sh
> ...
> Done. Terminating the simulation.
> 
> real    25m34.052s
> user    10769m7.948s
> sys     37m46.524s
> 
> harp31-sys:/home/estes04/athorlton/Testing/progs/thp_benchmarks/321.equake_l# echo never > /sys/kernel/mm/transparent_hugepage/enabled
> harp31-sys:/home/estes04/athorlton/Testing/progs/thp_benchmarks/321.equake_l# cat /sys/kernel/mm/transparent_hugepage/enabled
> always madvise [never]
> harp31-sys:/home/estes04/athorlton/Testing/progs/thp_benchmarks/321.equake_l# time ./run.sh
> ...
> Done. Terminating the simulation.
> 
> real    5m0.377s
> user    2202m0.684s
> sys     108m31.816s
> 

This 321.equake_l thing is not public, right? Do you have anything that
is public that shows the same problem?

Do you have any idea where all the extra time is spend? 
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