Date: Wed, 29 Mar 1995 07:30:49 -0600 (CST) From: Peter da Silva <peter@bonkers.taronga.com> To: fernando@cea.Berkeley.EDU (Fernando Astorga) Cc: hackers@FreeBSD.org Subject: Re: FreeBSD support for realtime systems Message-ID: <199503291330.HAA17992@bonkers.taronga.com> In-Reply-To: <199503291239.EAA04745@halfmoon.cea.berkeley.edu> from "Fernando Astorga" at Mar 29, 95 04:39:49 am
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We are currently running a "soft" real time (SCADA) system on UNIX with realtime extensions. I haven't tried running real time on traditional UNIX. My suggestion would be to investigate Andy Valencia's "vsta" microkernel first. It should have better real-time characteristics than FreeBSD. You may have to write custom device drivers to packetise and timestamp events received from lab devices, and schedule responses, if you need precise control. I cerytainly would in a production environment. For an educational setting, though, a little slop might not be a serious problem. It all depends on how tight your real-time requirements really are.
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