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    SubjectRe: [CFT] faster athlon/duron memory copy implementation
    > 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?

    since everone seems to CC: lkml in the reply...

    Athlon-500, AMD-751 Irongate, PC800-222 ECC SDRAM

    > ./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 9998 cycles per page
    copy_page function '2.4 non MMX' took 15269 cycles per page
    copy_page function '2.4 MMX fallback' took 15192 cycles per page
    copy_page function '2.4 MMX version' took 10152 cycles per page
    copy_page function 'faster_copy' took 10264 cycles per page
    copy_page function 'even_faster' took 10013 cycles per page
    copy_page function 'no_prefetch' took 11527 cycles per page
    > ./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 9975 cycles per page
    copy_page function '2.4 non MMX' took 15513 cycles per page
    copy_page function '2.4 MMX fallback' took 15219 cycles per page
    copy_page function '2.4 MMX version' took 10009 cycles per page
    copy_page function 'faster_copy' took 10186 cycles per page
    copy_page function 'even_faster' took 10088 cycles per page
    copy_page function 'no_prefetch' took 11583 cycles per page
    > ./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 9967 cycles per page
    copy_page function '2.4 non MMX' took 15178 cycles per page
    copy_page function '2.4 MMX fallback' took 15178 cycles per page
    copy_page function '2.4 MMX version' took 10086 cycles per page
    copy_page function 'faster_copy' took 10124 cycles per page
    copy_page function 'even_faster' took 10025 cycles per page
    copy_page function 'no_prefetch' took 11524 cycles per page
    > lspci
    00:00.0 Host bridge: Advanced Micro Devices [AMD] AMD-751 [Irongate]
    System Controller (rev 23)
    00:01.0 PCI bridge: Advanced Micro Devices [AMD] AMD-751 [Irongate] AGP
    Bridge (rev 01)
    00:04.0 Ethernet controller: 3Com Corporation 3c905B 100BaseTX [Cyclone]
    (rev 64)
    00:07.0 ISA bridge: VIA Technologies, Inc. VT82C686 [Apollo Super South]
    (rev 14)
    00:07.1 IDE interface: VIA Technologies, Inc. Bus Master IDE (rev 06)
    00:07.2 USB Controller: VIA Technologies, Inc. UHCI USB (rev 06)
    00:07.3 USB Controller: VIA Technologies, Inc. UHCI USB (rev 06)
    00:07.4 SMBus: VIA Technologies, Inc. VT82C686 [Apollo Super ACPI] (rev
    10)
    01:05.0 VGA compatible controller: S3 Inc. 86c368 [Trio 3D/2X] (rev 02)
    > cat /proc/cpuinfo
    processor : 0
    vendor_id : AuthenticAMD
    cpu family : 6
    model : 1
    model name : AMD-K7(tm) Processor
    stepping : 2
    cpu MHz : 499.051
    cache size : 512 KB
    fdiv_bug : no
    hlt_bug : no
    f00f_bug : no
    coma_bug : no
    fpu : yes
    fpu_exception : yes
    cpuid level : 1
    wp : yes
    flags : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov
    pat mmx syscall mmxext 3dnowext 3dnow
    bogomips : 992.87


    Tim

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