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Path: utzoo!linus!decvax!ittatc!dcdwest!sdcsvax!sdcrdcf!oberon!smeagol!kwan
From: kwan@smeagol.UUCP (Richard Kwan)
Newsgroups: net.works
Subject: Re: Help needed with configuring Suns
Message-ID: <616@smeagol.UUCP>
Date: Sun, 23-Feb-86 19:59:26 EST
Article-I.D.: smeagol.616
Posted: Sun Feb 23 19:59:26 1986
Date-Received: Wed, 26-Feb-86 06:31:45 EST
References: <241@brueer.brueer.UUCP> <176@hscfvax.UUCP> <3266@umcp-cs.UUCP>
Organization: Spacecraft Data Systems, JPL, Pasadena, CA
Lines: 30

In article <<3266@umcp-cs.UUCP> Mark Weiser writes:
> In article <176@hscfvax.UUCP> pavlov@hscfvax.UUCP writes:
> >
> >  Likewise, I would appreciate information/thoughts/etc on using a 3/160 or
> >  3/180 "server" as a general-purpose time-sharing machine (eventually part
...
> One problem with Suns as general time-sharing machines is relatively
> slow terminal i/o.  I believe I read a Sun spec which only promised
> 4800 baud continuous output (9600 baud input).  I can confirm that
> when my Sun is handling 4800 baud the number of interrupts shoots
> through the roof.  Perhaps there are smarter boards on the way,
> but where our 780 supports 80 terminals, I wouldn't want to be on
> a sun-3 with 8, even though its cpu is theoretically faster.
> 
> One the other hand, we routinely use Suns here with 1 or 2 terminals
> in addition to the hi-res console.  ...

This sounds like use of the serial I/O ports on the CPU or SCSI board
(using zs.o).  Anyone using the Systech terminal MUX on a Sun-3/180?
For that matter, how does the Systech board on a Sun-2 compare to a DZ (or
other MUX board) on a 780?

-- 
		Rick Kwan
		JPL Spacecraft Data Systems
		sdcrdcf!smeagol!kwan (UUCP)
		ia-sun2!smeagol!kwan@csvax.caltech.EDU (ARPA)
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