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SubjectRe: [PATCH, v2] mm, numa: Turn 4K pte NUMA faults into effective hugepage ones

* David Rientjes <rientjes@google.com> wrote:

> Ok, this is significantly better, it almost cut the regression
> in half on my system. [...]

The other half still seems to be related to the emulation faults
that I fixed in the other patch:

> 0.49% [kernel] [k] page_fault
> 0.06% [kernel] [k] emulate_vsyscall

Plus TLB flush costs:

> 0.13% [kernel] [k] generic_smp_call_function_interrupt
> 0.08% [kernel] [k] flush_tlb_func

for which you should try the third patch I sent.

So please try all my fixes - the easiest way to do that would be
to try the latest tip:master that has all related fixes
integrated and send me a new perf top output - most page fault
and TLB flush overhead should be gone from the profile.

Thanks,

Ingo


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