Messages in this thread | | | Date | Wed, 13 Oct 2010 14:31:47 -0700 | From | "H. Peter Anvin" <> | Subject | Re: [PATCH V2 -tip] lib,x86_64: improve the performance of memcpy() for unaligned copy |
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On 10/08/2010 02:02 AM, Miao Xie wrote: > On Fri, 8 Oct 2010 15:42:45 +0800, Ma, Ling wrote: >> Could you please give us full address for each comparison result,we will do some tests on my machine. >> For unaligned cases older cpus will crossing cache line and slow down caused by load and store, but for nhm, no necessary to care about it. >> By the way in kernel 64bit mode, our access mode should be around 8byte aligned. > > Would you need my benchmark tool? I think it is helpful for your test. >
If you could post the benchmark tool that would be great.
-hpa
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