*BSD News Article 6565


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From: jjg@pt.com (John Grana)
Subject: Re: Unix with real time performance ?
Message-ID: <1992Oct14.003850.10076@pt.com>
Organization: Performance Technologies, Incorporated
References: <1992Oct9.024816.3814@lna.oz.au> <1992Oct10.211721.5925@decuac.dec.com>
Date: Wed, 14 Oct 1992 00:38:50 GMT
Lines: 26

In article <1992Oct10.211721.5925@decuac.dec.com> mjr@hussar.dco.dec.com (Marcus J. "Buddy can you spare a clue?" Ranum) writes:
>>Many 
>>OS vendors claim their product will have "increased real-time support"
>>in their next release, but we need to know what is currently available 
>>to make desisions now. 
>
>	Depends on what kind of "real time" you want. If you want
>hard real time, there isn't (to my knowledge) much in the way of
>UNIX. There are several UNIX-likes that do hard real time, and I'd
>suggest you look at Quantum's QNX or something like that.

Another real time Unix is LynxOS. They have it running on SPARCstation 2
(sun4c arch.) and we have just recently brought up Lynx on a sun4m machine
(our own PT-SYS5000). Lynx was written in a "clean room" and doesn't have
any AT&T code in it. They support both SYS V and BSD systems calls. Also,
since one of their technical gurus is vice chair of the POSIX committee, they
follow this VERY well.

Runs very fast on a 30 mips Mbus machine!


-- 
___________________________________________________________________________
|John Grana, Performance Technologies Incorporated		jjg@pt.com|
|315 Science Parkway, Rochester, New York 14620           uupsi!ptsys1!jjg|
|Phone: (716) 256-0200   Fax: (716) 256-0791                              |