Messages in this thread | | | Subject | Re: [CFT] faster athlon/duron memory copy implementation | From | Olaf Dietsche <olaf.dietsche#> | Date | Thu, 24 Oct 2002 21:39:03 +0200 |
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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/
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