Messages in this thread | | | Date | Tue, 5 Dec 2017 15:08:50 +0100 | From | Peter Zijlstra <> | Subject | Re: [patch 55/60] x86/mm: Use INVPCID for __native_flush_tlb_single() |
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On Tue, Dec 05, 2017 at 05:51:28AM -0800, Dave Hansen wrote: > On 12/04/2017 02:51 PM, Peter Zijlstra wrote: > > We should find some of the benchmarks that were used to determine > > tlb_single_page_flush_ceiling and measure. I've not gotten around to > > doing either. > > > > Someone called Dave Hansen did that patch and might still have something > > lying around to help with that: > > > > a5102476a24b ("x86/mm: Set TLB flush tunable to sane value (33)") > > I hate git. :)
:-)
> But, yeah, we have certainly changed enough variables to necessitate > measuring it again.
Its more than that, I think much of that could show if it makes sense to use invpcid_flush_one() at all.
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