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SubjectRe: [CFT] faster athlon/duron memory copy implementation
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Am Don, 2002-10-24 um 19.15 schrieb Manfred Spraul:

> Attached is a test app that compares several memory copy implementations.
> Could you run it and report the results to me, together with cpu,
> chipset and memory type?

SiS 735, Duron 1200, 512 MB PC133 (running at 100Mhz).

Athlon test program $Id: fast.c,v 1.6 2000/09/23 09:05:45 arjan Exp $

copy_page() tests
copy_page function 'warm up run' took 19860 cycles per page
copy_page function '2.4 non MMX' took 21205 cycles per page
copy_page function '2.4 MMX fallback' took 21262 cycles per page
copy_page function '2.4 MMX version' took 19893 cycles per page
copy_page function 'faster_copy' took 12746 cycles per page
copy_page function 'even_faster' took 13112 cycles per page
copy_page function 'no_prefetch' took 10217 cycles per page

Being interested in seeing how the Via Ezra system here performs I also
ran it there but experienced three segfaults in the last three tests;
two of which I can explain, but no_prefetch is a stranger right now.
Anyway:

PLE133, Via Ezra 667 Mhz, 128 MB PC100 (probably at 66Mhz)
egger@tanja:~$ ./athlon
Athlon test program $Id: fast.c,v 1.6 2000/09/23 09:05:45 arjan Exp $

copy_page() tests
copy_page function 'warm up run' took 23213 cycles per page
copy_page function '2.4 non MMX' took 34971 cycles per page
copy_page function '2.4 MMX fallback' took 34958 cycles per page
copy_page function '2.4 MMX version' took 22774 cycles per page

--
Servus,
Daniel
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