From owner-freebsd-hackers Wed Mar 29 09:42:37 1995 Return-Path: hackers-owner Received: (from majordom@localhost) by freefall.cdrom.com (8.6.10/8.6.6) id JAA22716 for hackers-outgoing; Wed, 29 Mar 1995 09:42:37 -0800 Received: from irz301.inf.tu-dresden.de (irz301.inf.tu-dresden.de [141.76.1.11]) by freefall.cdrom.com (8.6.10/8.6.6) with SMTP id JAA22531 for ; Wed, 29 Mar 1995 09:34:14 -0800 Received: from sax.sax.de by irz301.inf.tu-dresden.de with SMTP (5.67b+/DEC-Ultrix/4.3) id AA26532; Wed, 29 Mar 1995 19:24:43 +0200 Received: by sax.sax.de (8.6.9/8.6.9-s1) with UUCP id TAA08344; Wed, 29 Mar 1995 19:24:43 +0200 Received: (from j@localhost) by uriah.heep.sax.de (8.6.11/8.6.9) id TAA27551; Wed, 29 Mar 1995 19:08:10 +0200 From: J Wunsch Message-Id: <199503291708.TAA27551@uriah.heep.sax.de> Subject: Re: FreeBSD support for realtime systems To: freebsd-hackers@FreeBSD.org, freebsd-realtime@hda.com Date: Wed, 29 Mar 1995 19:08:09 +0200 (MET DST) In-Reply-To: <199503291420.JAA01232@hda.com> from "Peter Dufault" at Mar 29, 95 09:20:38 am Reply-To: joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch) X-Phone: +49-351-2012 669 X-Mailer: ELM [version 2.4 PL23] Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit Content-Length: 460 Sender: hackers-owner@FreeBSD.org Precedence: bulk As Peter Dufault wrote: > > There is fixed priority scheduling on FreeBSD - see "rtprio". However, > there is no way to lock a process in memory to avoid page faults, no > kernel preemption (other than interrupts), and no way to way to reserve > resources. Ain't it possible to apply mlock(2) to a whole process? -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ Never trust an operating system you don't have sources for. ;-)