Article View: comp.sys.sun
Article #9197Re: Help! with RLL controllers
From: Gregory Bond
Date: Tue, 22 Nov 1988 21:33
Date: Tue, 22 Nov 1988 21:33
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>... But for some reason my disk throughput dropped from roughly
>125k/sec to 50k/sec. I have a feeling that either the RLL controller is
>defective (I doubt it) or that the Sun-2 cannot keep up with the increased
>transfer rate...
>Thanks, Greg Onufer // Focus Semiconductor Systems, Inc. // 408-738-0600
We had an adaptec 4070 on a sun 3/50 under SunOs 3.4. It certainly WAS a
dog. The problem, so I was unofficially told by a Sun person, was that
the Sun diag/setup utility lies about interleave: It accepts options to
change the interleave but doesn't actually change the interleave in the
controller. This means the format is done at interleave 2 which is just a
touch too small for the contoller or cpu to keep up.
We kept with it, because 1) we NEEDED the extra storage and 2) it was
still faster to have root/swap/tmp on this slow disk than ND to the other
3/50+shoebox server.
Gregory Bond, Burdett Buckeridge & Young Ltd, Melbourne, Australia
Internet: gnb@melba.bby.oz.au non-MX: gnb%melba.bby.oz@uunet.uu.net
Uucp: {uunet,mnetor,pyramid,ucb-vision,ukc..}!munnari!melba.bby.oz!gnb
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Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!ncrlnk!ncr-sd!hp-sdd!hplabs!ucbvax!husc6!rice!sun-spots-request From: munnari!melba.bby.oz.au!gnb@uunet.uu.net (Gregory Bond) Newsgroups: comp.sys.sun Subject: Re: Help! with RLL controllers Message-ID: <8811100642.AA27174@melba.bby.oz> Date: 22 Nov 88 21:33:07 GMT Sender: usenet@rice.edu Reply-To: Sun-Spots@Rice.edu Organization: Rice University, Houston, Texas Lines: 20 Approved: Sun-Spots@rice.edu Original-Date: Thu, 10 Nov 88 17:42:12 W X-Sun-Spots-Digest: Volume 7, Issue 22, message 2 of 14 X-Issue-Reference: v7n9