Date: Tue, 18 Feb 1997 16:27:22 -0500 (EST) From: John Fieber <jfieber@indiana.edu> To: hardware@freebsd.org Subject: Motherboard doesn't like tape drive Message-ID: <Pine.BSF.3.95q.970218161040.291A-100000@fallout.campusview.indiana.edu>
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[I asked this a month or two ago and no explaination or solution came out of it, so I'll try again. Hopefully someone will have a flash of insight...] Before: 80486dx33 motherboard + adaptec 1542C + archive viper 150 tape drive. When writing to the tape, with <insert your favorite backup software>, the tape streams nicely for about 100KBytes/sec throughput. After: ASUS P/I-P55T2P4 Pentum 100 motherboard + ASUS SC200 + archive viper 150 tape drive. I've tried every trick in the book, every snazzy buffering tape streaming enhancement gizmo and the thing just won't stream anymore! I get about 60KBytes/sec throughput on a good day. I put the old adaptec 1542C controller back in but that made no difference. This is really aggrivating! It takes *forever* to backup a 1 gig disk at 60KBytes/sec, never mind the wear and tear on the drive of starting and stopping so often. I've been tracking the RELENG_2_2 kernel sources and observed no change in the situation in the past month or two. The video card is the only other component of the system that changed in the upgrade. The hard drive, sound card, network card, amount of RAM are all the same as before. -john
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