[99632] in RedHat Linux List
Re: Linux and QNX
daemon@ATHENA.MIT.EDU (Ian Lumb)
Mon Nov 16 09:57:52 1998
Date: Mon, 16 Nov 1998 09:51:56 -0500 (EST)
From: Ian Lumb <ilumb@platform.com>
To: redhat-list@redhat.com
cc: Jesper Frank Nemholt <dassic@login.dknet.dk>
In-Reply-To: <Pine.OSF.3.91.981115151151.17102A-100000@alpha.confederationc.on.ca>
Resent-From: redhat-list@redhat.com
Reply-To: redhat-list@redhat.com
On Sun, 15 Nov 1998, UNIXMAN wrote:
> well, I remember when I used it it wasn't compatible with other
> versions of unix, it wasn't a true multitasker, some of the commands
> where different, and it was BSDish; it was running on 8088
> workstations. That was with version 4.xxx I suppose things are
> different now.
Was the multitasking aspect compromised to offer more of a real RTOS?
As I recall, UNIX platforms offerred (at best) a `near real time' OS - as
it took a finite amount of time to process an interrupt. The `best'
UNIX-based RTOSs seemed to `guarantee' the processing of such a request in
a relatively small, finite amount of time ...
I think that Sequent had a solution where they dedicated a processor to
handling RT requests ...
Has there been significant progress, in the UNIX world, from this point?
Ian
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