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Path: utzoo!watmath!clyde!burl!ulysses!mhuxr!mhuxt!houxm!ihnp4!nsc!chuqui
From: chuqui@nsc.UUCP (Chuq Von Rospach)
Newsgroups: net.unix-wizards
Subject: Re: bsd4.2 on 11/785
Message-ID: <3252@nsc.UUCP>
Date: Sat, 12-Oct-85 22:54:12 EDT
Article-I.D.: nsc.3252
Posted: Sat Oct 12 22:54:12 1985
Date-Received: Mon, 14-Oct-85 04:38:19 EDT
References: <1513@srcsip.UUCP>
Reply-To: chuqui@nsc.UUCP (Chuq Von Rospach)
Organization: Cultural Fugue, Ltd.
Lines: 27

In article <1513@srcsip.UUCP> linde@srcsip.UUCP (Larry Linde) writes:
>Is anyone running Bsd 4.2 on a vax 11/785? If so do you have any
>problems with it just hanging (both single and multi user mode).

We are running 4.2 on our 785 (the enhanced BRL release 3 version). The
only two problems I have with it are an occasional silly message out of
syslogd (I've mentioned this recently on the net already) and having the
network stop on occasion. What I THINK is happening, and haven't had time
to track down, is that the kernel DELAY() routine is implemented by a
register countdown loop. With the 785 significantly faster than a 780, a
DELAY() loop that is cut too finely may simply not be long enough in all
cases, and I think my ethernet board drops an interrupt on the floor. If
your machine is simply going away (total responsiveness except to console
^P commands) you might try finding the macro definition and doubling the
delay loop. I haven't had time to do that, but it couldn't hurt (could it?)
That seems to be the only place that the processor change could be visible
to the operating system (there really ought to be a way to build a decent
delay routine without making processor speed assumptions... sigh.)

chuq
-- 
:From the caverns of the Crystal Cave:  Chuq Von Rospach 
Currently: nsc!chuqui@decwrl.ARPA       {decwrl,hplabs,ihnp4,pyramid}!nsc!chuqui
Soon to be:				..!sun!<somethingorother>

Our time is past -- it is a time for men, not magic. Come, let us leave
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