From owner-freebsd-hackers Wed Mar 29 09:27:59 1995 Return-Path: hackers-owner Received: (from majordom@localhost) by freefall.cdrom.com (8.6.10/8.6.6) id JAA22460 for hackers-outgoing; Wed, 29 Mar 1995 09:27:59 -0800 Received: from pht.com (exodus.pht.com [198.60.59.99]) by freefall.cdrom.com (8.6.10/8.6.6) with SMTP id JAA22454 for ; Wed, 29 Mar 1995 09:27:58 -0800 Received: by pht.com id AA03112 (5.67b/IDA-1.5 for freebsd-hackers@FreeBSD.org); Wed, 29 Mar 1995 10:11:03 -0700 Date: Wed, 29 Mar 1995 10:11:02 -0700 (MST) From: Brad Midgley To: Fernando Astorga Cc: freebsd-hackers@FreeBSD.org Subject: Re: FreeBSD support for realtime systems In-Reply-To: <199503291239.EAA04745@halfmoon.cea.berkeley.edu> Message-Id: Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: hackers-owner@FreeBSD.org Precedence: bulk On Wed, 29 Mar 1995, Fernando Astorga wrote: > I was wondering if anyone out there has had previous experience with running > real-time systems on a UNIX environment. But first, here's a description: > I'm pushing for porting this scheduler to UNIX, preferably FreeBSD, since it > will run on the lab's PCs. But there are some issues that I'm not too > familiar with, esp. UNIX's time-slice/process priority system. Can someone > who has had experience with real-time systems on UNIX provide some info > on how it can be done? I don't know how FreeBSD performs WRT realtime, but we used QNX (it's for intel) a lot at my last job. QNX's main thing is realtime support and the api looks like POSIX for the most part so if your applications are written carefully, they could run on BSD or QNX. It's even starting to get very stable with late releases (early versions were a little flakey). brad@pht.com