[ale] "real-time" (was Linux job)
Dan Lambert
danlambert at bellsouth.net
Wed Mar 29 16:23:18 EST 2006
Intel's iRMX OS is a real Real Time OS. The rest of these are pseudo real
time OS'.
In process management, and in critical facility infrastructure management, a
real time OS is required. iRMX is still one of the premier RTOS' for Intel
chips. I started working with iRMX when it was an 8 bit OS, and now it's a
32 bit OS. It was a more robust OS, and incredibly quicker to handle process
request and data transfers than 32 bit Win, even when it was a 16 bit OS.
Dan Lambert
-----Original Message-----
From: ale-bounces at ale.org [mailto:ale-bounces at ale.org] On Behalf Of Jeff
To: ale at ale.org
Hubbs
Sent: Wednesday, March 29, 2006 9:38 AM
To: Atlanta Linux Enthusiasts
Subject: Re: [ale] "real-time" (was Linux job)
My understanding of the terms mirrors Kenneth's as he said at the end of his
message. There's MVS-style or CDC-style batch operation, there's VAX-style
and UNIX-style interactive usage, and there's real-time - like an autopilot
or a fuel-injection system.
Kenneth W Cochran wrote:
>>From: Christopher Fowler <cfowler at outpostsentinel.com>
>>To: Atlanta Linux Enthusiasts <ale at ale.org>
>>Date: Wed, 29 Mar 2006 08:54:04 -0500
>>Subject: Re: [ale] Linux job
>>
>>On Wed, 2006-03-29 at 08:35 -0500, Geoffrey wrote:
>>
>>
>>>Classified by who? Microsoft I'm sure. Does anyone else really
>>>consider these to be real time implementations?
>>>
>>>
>>Years ago UNIX was considered a real-time system vs what the main
>>frame is. The MF is not real-time. More like job oriented.
>>
>>
>
>Maybe a description/semantic difference? E.g. maybe they're using
>"real-time" in context of what that (roughly) meant some
>25 years ago as compared to "interactive?" Seems I remember the likes
>of PDP & VAX (RSTS & VMS respectively) being called "real-time" because
>people/users used them in "real time" aka "interactively" when Big Iron
>of the day (MVS & descendants) was more "batch oriented" & kinda "faked
>it" with the likes of TSO :).
>
>Nowadays especially I'd refer/consider "batch," "interactive"
>and "real-time" as 3 very different scenarios. :)
>
>-kc
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