Date: Wed, 26 Apr 1995 14:42:56 -0500 (CDT) From: bob@obiwan.pmr.com (Bob Willcox) To: tom@haven.uniserve.com (Tom Samplonius) Cc: questions@FreeBSD.org Subject: Re: BT946C strangeness Message-ID: <m0s4CzA-000300C@obiwan.pmr.com> In-Reply-To: <Pine.BSF.3.91.950424134228.18376A-100000@haven.uniserve.com> from "Tom Samplonius" at Apr 24, 95 01:45:00 pm
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Tom Samplonius wrote: > > > I've just got a BT946C, and decided to try it out with the latest > SNAP. The weird part is that is detects it as a EISA device! It boots > up and runs fine, but disk performance is very poor (about 1.5meg/s on > writes). What is your read performance? The write speed of my DSP3210S's was about 1.5meg/sec before I enabled their write caching (the DSP3210S defaults to not caching writes). With the write caching enabled I get about 4.5meg/sec (and about 4meg/sec read, though that didn't change). This is on a BT-747S controller. BTW, one enables the write caching by setting a bit in mode page 8 (as I recall). Also, for DEC drives you have to reset a bit in mode page 2. Email me if you would like some instructions and a program I got from a person at DEC you can use to do this. -- Bob Willcox bob@obiwan.pmr.com (or obiwan%bob@uunet.uu.net) Austin, TX
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