Messages in this thread |  | | | From | Ernst Herzberg <> | | Subject | Re: [CFT] faster athlon/duron memory copy implementation | | Date | Thu, 24 Oct 2002 20:48:36 +0200 |
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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!
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