mark@intek01.UUCP (Mark McWiggins) (03/03/90)
My company does quite a bit of work in factory and warehouse automation, where a certain degree of real-time control is necessary in controlling warehouse machinery, etc. We've mostly been running DOS for these parts of the application; since there's very little operating system there, there's very little to get in the way of the application. Of course, that cuts both ways; there's also no memory protection, no tasking, etc., etc. We're always looking for something better and are aware of various Unixish efforts in the real-time direction (LynxOS, etc.). I've seen various mentions of System V R4, besides finally coming in with the nice Berkeleyisms, being more configurable towards real-time applications. I haven't seen any details on this. Is there someone close to the porting effort that could comment? Is SysVR4 going to be a true contender in this arena? We don't require microsecond response time, but it is nice to stop those machines before they drive through walls, etc ... :-) Thanks in advance for any insight. -- Mark McWiggins Integration Technologies, Inc. (Intek) +1 206 455 9935 DISCLAIMER: I could be wrong ... 1400 112th Ave SE #202 Bellevue WA 98004 uunet!intek01!mark Ask me about C++!
ram@attcan.UUCP (Richard Meesters) (03/05/90)
In article <226@intek01.UUCP>, mark@intek01.UUCP (Mark McWiggins) writes: > I haven't seen any details on this. Is there someone close to the porting > effort that could comment? Is SysVR4 going to be a true contender in > this arena? We don't require microsecond response time, but it is nice > to stop those machines before they drive through walls, etc ... :-) > > Thanks in advance for any insight. According to the SVR4 Product Overview, SVR4 introduces new process-scheduler architecture, and high-resolution timing services to support real-time processing. The high resolution timers are based on the BSD system timing services, and give microsecond resolution. If you want more information, you can try and get the SVR4 "System Administrator's Guide" and the "Programmer's Guide: System Services and Application Packaging Tools." I'm not sure if they are yet available though. Regards, Richard Meesters