Date: Fri, 6 Jun 1997 16:40:30 -0500 (CDT) From: Craig Johnston <craig@gnofn.org> To: hardware@freebsd.org Subject: poor memory bandwidth on ABIT IT5H rev 1.5 Message-ID: <Pine.GSO.3.95.970606163225.26412A-100000@sparkie.gnofn.org>
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Interesting -- 2.2.2 on the ABIT with an AMD K5-PR166 gives a result of 60 megs/sec maximum via the naive memory bandwidth benchmark: dd if=/dev/zero of=/dev/null bs=1m count=100 while 2.2.2 on an Asus mobo (the HX one, t2p4? or something?) gives 86 meg/sec by the same benchmark. The ABIT board has EDO dram @60ns, the Asus FPM @ 60ns. Both kernels have 'flags 0x7' for npx0 -- as their slower (than intel) FPUs don't speed up memory moves. I'd be extremely interested in seeing your results for 2.2.2 with the K5 and the above flags on the ABIT and other motherboards. Anyone else have reason to believe the ABITs memory bandwidth sucks? -Craig
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