Re: [CFT] faster athlon/duron memory copy implementation

[Panagiotis Papadakos]

ASUS K7V 512 Mb PC-133 Athlon Slot-A 600 MhZ

bash-2.05# cat /proc/cpuinfo
processor	: 0
vendor_id	: AuthenticAMD
cpu family	: 6
model		: 2
model name	: AMD Athlon(tm) Processor
stepping	: 1
cpu MHz		: 618.008
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 apic sep mtrr pge mca
cmov pat pse36 mmx fxsr syscall mmxext 3dnowext 3dnow
bogomips	: 1232.07

bash-2.05# ./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 10096 cycles per page
copy_page function '2.4 non MMX'	 took 14856 cycles per page
copy_page function '2.4 MMX fallback'	 took 14168 cycles per page
copy_page function '2.4 MMX version'	 took 10754 cycles per page
copy_page function 'faster_copy'	 took 5752 cycles per page
copy_page function 'even_faster'	 took 5694 cycles per page
copy_page function 'no_prefetch'	 took 6560 cycles per page

bash-2.05# ./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 10851 cycles per page
copy_page function '2.4 non MMX'	 took 14726 cycles per page
copy_page function '2.4 MMX fallback'	 took 14390 cycles per page
copy_page function '2.4 MMX version'	 took 11390 cycles per page
copy_page function 'faster_copy'	 took 5490 cycles per page
copy_page function 'even_faster'	 took 5655 cycles per page
copy_page function 'no_prefetch'	 took 5906 cycles per page

bash-2.05# ./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 9819 cycles per page
copy_page function '2.4 non MMX'	 took 14897 cycles per page
copy_page function '2.4 MMX fallback'	 took 15609 cycles per page
copy_page function '2.4 MMX version'	 took 10374 cycles per page
copy_page function 'faster_copy'	 took 5759 cycles per page
copy_page function 'even_faster'	 took 5609 cycles per page
copy_page function 'no_prefetch'	 took 6059 cycles per page