Messages in this thread | | | Subject | Re: [lkp] [x86/hweight] 65ea11ec6a: will-it-scale.per_process_ops 9.3% improvement | From | "H. Peter Anvin" <> | Date | Tue, 16 Aug 2016 16:09:19 -0700 |
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On August 16, 2016 10:16:35 AM PDT, Borislav Petkov <bp@suse.de> wrote: >On Tue, Aug 16, 2016 at 09:59:00AM -0700, H. Peter Anvin wrote: >> Dang... > >Isn't 9.3% improvement a good thing(tm) ?
Yes, it's huge. The only explanation I could imagine is that scrambling %rdi caused the scheduler to do completely the wrong thing. -- Sent from my Android device with K-9 Mail. Please excuse brevity and formatting.
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