Messages in this thread | | | From | Eric Dumazet <> | Date | Fri, 26 Nov 2021 10:27:06 -0800 | Subject | Re: [PATCH v1] x86/lib: Optimize 8x loop and memory clobbers in csum_partial.c |
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On Fri, Nov 26, 2021 at 10:17 AM Noah Goldstein <goldstein.w.n@gmail.com> wrote: >
> > Makes sense. Although if you inline I think you definitely will want a more > conservative clobber than just "memory". Also I think with 40 you also will > get some value from two counters. > > Did you see the number/question I posted about two accumulators for 32 > byte case? > Its a judgement call about latency vs throughput that I don't really have an > answer for. >
The thing I do not know is if using more units would slow down the hyper thread ?
Would using ADCX/ADOX would be better in this respect ?
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