lkml.org 
[lkml]   [2002]   [Oct]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    SubjectRe: [CFT] faster athlon/duron memory copy implementation
    From
    Date
    Manfred Spraul <manfred@colorfullife.com> writes:

    > 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?

    Duron 1200, Elitegroup K7VTA3, 512 MB (DDR PC266 CL2.5)

    $ cat /proc/cpuinfo
    processor : 0
    vendor_id : AuthenticAMD
    cpu family : 6
    model : 7
    model name : AMD Duron(tm) processor
    stepping : 1
    cpu MHz : 1200.023
    cache size : 64 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 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse syscall mp mmxext 3dnowext 3dnow
    bogomips : 2367.48

    $ lspci
    00:00.0 Host bridge: VIA Technologies, Inc. VT8367 [KT266]
    00:01.0 PCI bridge: VIA Technologies, Inc. VT8367 [KT266 AGP]
    00:11.0 ISA bridge: VIA Technologies, Inc. VT8233 PCI to ISA Bridge
    00:11.1 IDE interface: VIA Technologies, Inc. Bus Master IDE (rev 06)

    $ gcc -v
    Reading specs from /usr/lib/gcc-lib/i386-linux/2.95.4/specs
    gcc version 2.95.4 20011002 (Debian prerelease)

    $ gcc athlon.c -o athlon
    $ ./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 15795 cycles per page
    copy_page function '2.4 non MMX' took 16958 cycles per page
    copy_page function '2.4 MMX fallback' took 16862 cycles per page
    copy_page function '2.4 MMX version' took 15792 cycles per page
    copy_page function 'faster_copy' took 9576 cycles per page
    copy_page function 'even_faster' took 9385 cycles per page
    copy_page function 'no_prefetch' took 7637 cycles per page
    $ ./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 15802 cycles per page
    copy_page function '2.4 non MMX' took 16957 cycles per page
    copy_page function '2.4 MMX fallback' took 16897 cycles per page
    copy_page function '2.4 MMX version' took 15854 cycles per page
    copy_page function 'faster_copy' took 9564 cycles per page
    copy_page function 'even_faster' took 9407 cycles per page
    copy_page function 'no_prefetch' took 7649 cycles per page
    $ ./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 15807 cycles per page
    copy_page function '2.4 non MMX' took 16995 cycles per page
    copy_page function '2.4 MMX fallback' took 17056 cycles per page
    copy_page function '2.4 MMX version' took 16431 cycles per page
    copy_page function 'faster_copy' took 9832 cycles per page
    copy_page function 'even_faster' took 9389 cycles per page
    copy_page function 'no_prefetch' took 7657 cycles per page
    -
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to majordomo@vger.kernel.org
    More majordomo info at http://vger.kernel.org/majordomo-info.html
    Please read the FAQ at http://www.tux.org/lkml/

    \
     
     \ /
      Last update: 2005-03-22 13:30    [W:0.023 / U:60.088 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site