Messages in this thread | | | Date | Tue, 29 Oct 2013 09:25:42 +0100 | From | Ingo Molnar <> | Subject | Re: [PATCH] x86: Run checksumming in parallel accross multiple alu's |
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* Neil Horman <nhorman@tuxdriver.com> wrote:
> Heres my data for running the same test with taskset restricting > execution to only cpu0. I'm not quite sure whats going on here, > but doing so resulted in a 10x slowdown of the runtime of each > iteration which I can't explain. As before however, both the > parallel alu run and the prefetch run resulted in speedups, but > the two together were not in any way addative. I'm going to keep > playing with the prefetch stride, unless you have an alternate > theory.
Could you please cite the exact command-line you used for running the test?
Thanks,
Ingo
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