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    SubjectRe: [CFT] faster athlon/duron memory copy implementation
    Date
    On Donnerstag, 24. Oktober 2002 19:15, Manfred Spraul wrote:

    > 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?
    >
    > Please run 2 or 3 times.

    CPU: AMD Athlon(tm) XP 1800+ stepping 02
    00:00.0 Host bridge: VIA Technologies, Inc.: Unknown device 3116
    00:01.0 PCI bridge: VIA Technologies, Inc. VT8633 [Apollo Pro266 AGP]
    512 MB DDR266 (Mem FSB changed to 100MHz due to memory problems)

    copy_page() tests
    copy_page function 'warm up run' took 20103 cycles per page
    copy_page function '2.4 non MMX' took 22612 cycles per page
    copy_page function '2.4 MMX fallback' took 22585 cycles per page
    copy_page function '2.4 MMX version' took 20088 cycles per page
    copy_page function 'faster_copy' took 12198 cycles per page
    copy_page function 'even_faster' took 12266 cycles per page
    copy_page function 'no_prefetch' took 9244 cycles per page
    earny@dev:~/x> ./a.out
    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 20051 cycles per page
    copy_page function '2.4 non MMX' took 22580 cycles per page
    copy_page function '2.4 MMX fallback' took 22610 cycles per page
    copy_page function '2.4 MMX version' took 20124 cycles per page
    copy_page function 'faster_copy' took 12276 cycles per page
    copy_page function 'even_faster' took 12262 cycles per page
    copy_page function 'no_prefetch' took 9213 cycles per page
    earny@dev:~/x> ./a.out
    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 20150 cycles per page
    copy_page function '2.4 non MMX' took 22646 cycles per page
    copy_page function '2.4 MMX fallback' took 22638 cycles per page
    copy_page function '2.4 MMX version' took 20073 cycles per page
    copy_page function 'faster_copy' took 12191 cycles per page
    copy_page function 'even_faster' took 12261 cycles per page
    copy_page function 'no_prefetch' took 9218 cycles per page

    ------------------

    Wow!

    <Earny>
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