Path: utzoo!censor!geac!torsqnt!news-server.csri.toronto.edu!clyde.concordia.ca!thunder.mcrcim.mcgill.edu!snorkelwacker.mit.edu!bu.edu!rpi!zaphod.mps.ohio-state.edu!samsung!uunet!ccicpg!uis-oc!ns!bob From: bob@ns.UUCP (Robert J. Mathias Jr.) Newsgroups: comp.arch Subject: Re: OS/2 is dead? Message-ID: <46@ns.UUCP> Date: 23 Dec 90 18:14:02 GMT References: <28775@usc> <14887@ogicse.ogi.edu> <3078@canisius.UUCP> <38@ns.UUCP> <3083@crdos1.crd.ge.COM> Reply-To: bob@ns.UUCP (Robert J. Mathias Jr.) Organization: Unisys Corporation; Irvine, California Lines: 33 In article <3083@crdos1.crd.ge.COM> davidsen@crdos1.crd.ge.com (bill davidsen) writes: > Sounds like when you say UNIX you mean BSD. V.3.2 and V.4 have nap() >in ms resolution. And I think BSD does fine resolution thru select(), >although I don't have the man page handy. V.4 has some support for real >time, other than the kernel being more preemptable, I don't have the >right manuals handy. I haven't tried doing any r/t on it yet. The version of Unix I have been using is V.3. As far as I know, there is no nap() function in this version. We use the sleep and alarm functions which have resolutions of 1 second (if you are lucky). We just got our version of V.4 but I haven't had time yet to explore it. > I agree with the need for the features, but I'm not sure that Mach is >the best solution. I'm waiting to see how various implementations work >over the next few years before forming an opinion. It may be that the >ideas from mach and other versions will be used to do another >implementation. For evaluating the usefulness of an o/s implementation, >no amount of research can substitute for some solid experience in >production use (and vice versa, of course). I agree with your statements about Mach, and yes there may be better solutions in other implementations but the this thread started on OS/2 being dead and that Unix was going to rule the world. I was only responding that OS/2 seems to be a better real-time environment than the main stream Unix's (V and BSD). Or I should say that in our case OS/2 met more our needs and was an easier environment to use. -- Robert J. Mathias, Jr uucp: ...!uunet!ccicpg!uis-oc!ns.UUCP!bob Unisys Corporation voice: (714) 727-0323 A and V Series Systems Engineering fax: (714) 727-0350 Irvine, California