From owner-freebsd-questions Mon May 8 13:24:32 2000 Delivered-To: freebsd-questions@freebsd.org Received: from corinth.bossig.com (corinth.bossig.com [208.26.239.66]) by hub.freebsd.org (Postfix) with ESMTP id D99D237BD2E for ; Mon, 8 May 2000 13:24:24 -0700 (PDT) (envelope-from kstewart@3-cities.com) Received: from 3-cities.com (unverified [208.26.241.18]) by corinth.bossig.com (Rockliffe SMTPRA 4.2.1) with ESMTP id ; Mon, 8 May 2000 13:29:07 -0700 Message-ID: <3917225C.1485370C@3-cities.com> Date: Mon, 08 May 2000 13:23:56 -0700 From: Kent Stewart Organization: Columbia Basin Virtual Community Project X-Mailer: Mozilla 4.73 [en] (Windows NT 5.0; U) X-Accept-Language: en MIME-Version: 1.0 To: Clarence Brown Cc: 'Gustavo Vieira Goncalves Coelho Rios' , freebsd-questions@freebsd.org Subject: Re: FreeBSD as a real-time solution? References: <005101bfb928$9837fe20$8c6896d1@granitepost.com> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Clarence Brown wrote: > > I'm not a FreeBSD expert, but in "Dr. Dobb's Journal" #310 March 2000 > (www.ddj.com) there is an article title "Real-Time Linux" that discusses 2 > projects to bring real time to Linux. Perhaps these might also be applied to > FreeBSD? > > Also, define "precise time measurements". What is the rate and granularity > that you need? If your DOS system is "working", why do you want to "fix" it? > Because on DOS the RTC's ganularity is 0.055 seconds. The RTC is interrupted approximately 18.3 times a second. Not too accurate. Kent > > Mentioned in the article: > > RTLinux > at http://www.rtlinux.org, > > Real Time Application Interface, (an offshoot of RTLinux with better > timers?) > at http://www.aero.polimi.it/projects/rtai > > Cla. > > > -----Original Message----- > > From: owner-freebsd-questions@FreeBSD.ORG > > [mailto:owner-freebsd-questions@FreeBSD.ORG]On Behalf Of > > Gustavo Vieira > > Goncalves Coelho Rios > > Sent: Sunday, May 07, 2000 2:15 PM > > To: Gilad Rom > > Cc: freebsd-questions@FreeBSD.ORG > > Subject: Re: FreeBSD as a Real-Time solution? > > > > > > Gilad Rom wrote: > > > > > > Hello, > > > > > > I have been using FreeBSD as a Server OS for a long time > > with great success > > > and satisfaction, > > > and now the need has come for a new solution to our > > production network, > > > which has several 486/386 machines, > > > that need a real time OS to monitor production status. > > > > > > Question is, could FreeBSD be made suitable for such tasks? > > > Performance isnt an issue, but I need to make precise time > > readings from the > > > parallel port > > > and timing is critical. Right now I am using DOS, which is > > pretty much fine > > > for that, but > > > I want something better. > > > > > > Thank you, > > > > > > -- Gilad. > > > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > > > with "unsubscribe freebsd-questions" in the body of the message > > > > I think that FreeBSD is not a solution for your needs. > > FreeBSD isn't bad, but that's not its focus. > > > > Try something like QNX and/or Neutrino (http://www.qnx.com). > > > > -- > > "Sometimes I worry about being a success in a mediocre world." > > -- Lily Tomlin > > > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > > with "unsubscribe freebsd-questions" in the body of the message > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-questions" in the body of the message -- Kent Stewart Richland, WA mailto:kstewart@3-cities.com http://www.3-cities.com/~kstewart/index.html FreeBSD News http://daily.daemonnews.org/ SETI(Search for Extraterrestrial Intelligence) @ HOME http://setiathome.ssl.berkeley.edu/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message