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SubjectRe: [CFT] faster athlon/duron memory copy implementation
Athlon TB 900/VIA KT133

titanic:/tmp # cat /proc/cpuinfo
processor : 0
vendor_id : AuthenticAMD
cpu family : 6
model : 4
model name : AMD Athlon(tm) Processor
stepping : 2
cpu MHz : 902.075
cache size : 256 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 syscall mmxext 3dnowext 3dnow
bogomips : 1795.68

titanic:/tmp # gcc -O3 -s -o athlon athlon.c
titanic:/tmp # ./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 13359 cycles per page
copy_page function '2.4 non MMX' took 20749 cycles per page
copy_page function '2.4 MMX fallback' took 20737 cycles per page
copy_page function '2.4 MMX version' took 13545 cycles per page
copy_page function 'faster_copy' took 8132 cycles per page
copy_page function 'even_faster' took 8123 cycles per page
copy_page function 'no_prefetch' took 7648 cycles per page
titanic:/tmp # ./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 13398 cycles per page
copy_page function '2.4 non MMX' took 20774 cycles per page
copy_page function '2.4 MMX fallback' took 20749 cycles per page
copy_page function '2.4 MMX version' took 13349 cycles per page
copy_page function 'faster_copy' took 8130 cycles per page
copy_page function 'even_faster' took 8168 cycles per page
copy_page function 'no_prefetch' took 7631 cycles per page
titanic:/tmp # ./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 13470 cycles per page
copy_page function '2.4 non MMX' took 20780 cycles per page
copy_page function '2.4 MMX fallback' took 20784 cycles per page
copy_page function '2.4 MMX version' took 13384 cycles per page
copy_page function 'faster_copy' took 8172 cycles per page
copy_page function 'even_faster' took 8137 cycles per page
copy_page function 'no_prefetch' took 7633 cycles per page
titanic:/tmp # ./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 13377 cycles per page
copy_page function '2.4 non MMX' took 20764 cycles per page
copy_page function '2.4 MMX fallback' took 20831 cycles per page
copy_page function '2.4 MMX version' took 13336 cycles per page
copy_page function 'faster_copy' took 8140 cycles per page
copy_page function 'even_faster' took 8131 cycles per page
copy_page function 'no_prefetch' took 7670 cycles per page

--
Andreas Steinmetz
D.O.M. Datenverarbeitung GmbH

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