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SubjectRe: [PATCH v5 6/7] x86/tlb: optimizing flush_tlb_mm
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On 15 May 2012 19:15, Nick Piggin <npiggin@gmail.com> wrote:
> So this should go to linux-arch...
>
> On 15 May 2012 18:55, Alex Shi <alex.shi@intel.com> wrote:
>> Not every flush_tlb_mm execution moment is really need to evacuate all
>> TLB entries, like in munmap, just few 'invlpg' is better for whole
>> process performance, since it leaves most of TLB entries for later
>> accessing.

Did you have microbenchmarks for this like your mprotect numbers,
by the way? Test munmap numbers and see how that looks. Also,
does it show up on any macro-benchmarks like specjbb?


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