[Mplayer-users] Question: K6-2 and fastmemcpy

[Nick Kurshev]

Hi!

On Thu, 19 Apr 2001 16:05:46 +0200 (MET DST), Christoph Lampert wrote:

>>>On my Duron MMX2 optimized version has v2-v1=318426
>>>but version with standard memcpy has v2-v1=517387
>
>>
>>on my K6-2 450MHz, running linux 2.2.16:
>>
>>v1 = 30557687593183 v2 = 30557688368732 v2-v1=775549
>>
>
>Is that clock-cycles?  Cool, on my K6 200 MHz (so MMX, but no MMX2)
>the regular memcpy-version takes only 330000 in the mean...
>Too bad I can't overclock it to 1GHz. 
>
It indicates how many CPU cycles were spent per tested block. CPU frequency don't matter
in this case and I intentionally didn't say my CPU frequency.
Example: 2 NOP insns will execute on K6 at 1 cpu cycle on any cpu frequency.
Numbers are interested only from point of relative measuring (MMX and nonMMX optimized versions).

Best regards! Nick



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