Date: Fri, 20 Mar 1998 11:30:51 +1030 From: "Daniel O'Connor" <doconnor@gsoft.com.au> To: current@FreeBSD.ORG Subject: More wank^H^H^H^Hspeed tests Message-ID: <199803200100.LAA24874@cain.gsoft.com.au>
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This is my 6x86/P166+ with an <Intel 82437VX PCI cache memory controller> rev 0x02 on pci0.0.0. stream_d was compiled with gcc -o stream_d stream_d.c second_cpu.c -malign-double -O3 -lm I don't have a world stone ATM, but it sucks anyway :) ------------------------------------------------------------- This system uses 8 bytes per DOUBLE PRECISION word. ------------------------------------------------------------- Array size = 1000000, Offset = 0 Total memory required = 22.9 MB. Each test is run 10 times, but only the *best* time for each is used. ------------------------------------------------------------- Your clock granularity/precision appears to be 7812 microseconds. Each test below will take on the order of 164062 microseconds. (= 21 clock ticks) Increase the size of the arrays if this shows that you are not getting at least 20 clock ticks per test. ------------------------------------------------------------- WARNING -- The above is only a rough guideline. For best results, please be sure you know the precision of your system timer. ------------------------------------------------------------- Function Rate (MB/s) RMS time Min time Max time Copy: 93.0909 0.1774 0.1719 0.1797 Scale: 89.0435 0.1852 0.1797 0.1875 Add: 96.0000 0.2595 0.2500 0.2656 Triad: 93.0909 0.2618 0.2578 0.2734 IMHO this isn't too bad for a M/B which was one of the cheapest I could find, I think it cost me around AU$180 or so, and I bought it a while ago. --------------------------------------------------------------------- |Daniel O'Connor software and network engineer for Genesis Software | |http://www.gsoft.com.au | |The nice thing about standards is that there are so many of them to| |choose from. -- Andrew Tanenbaum | --------------------------------------------------------------------- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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