From owner-freebsd-questions@FreeBSD.ORG Tue Dec 21 04:39:36 2010 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 2908B106564A for ; Tue, 21 Dec 2010 04:39:36 +0000 (UTC) (envelope-from smithi@nimnet.asn.au) Received: from sola.nimnet.asn.au (paqi.nimnet.asn.au [115.70.110.159]) by mx1.freebsd.org (Postfix) with ESMTP id 992088FC12 for ; Tue, 21 Dec 2010 04:39:35 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by sola.nimnet.asn.au (8.14.2/8.14.2) with ESMTP id oBL4dWgb070354; Tue, 21 Dec 2010 15:39:32 +1100 (EST) (envelope-from smithi@nimnet.asn.au) Date: Tue, 21 Dec 2010 15:39:32 +1100 (EST) From: Ian Smith To: Brandon Gooch In-Reply-To: <20101220120038.3434C106574B@hub.freebsd.org> Message-ID: <20101221145455.T27345@sola.nimnet.asn.au> References: <20101220120038.3434C106574B@hub.freebsd.org> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Cc: freebsd-questions@freebsd.org, Da Rock Subject: Re: FBSD Realtime X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 21 Dec 2010 04:39:36 -0000 In freebsd-questions Digest, Vol 342, Issue 1, Message: 14 On Sun, 19 Dec 2010 19:49:08 -0600 Brandon Gooch wrote: > On Sun, Dec 19, 2010 at 6:49 AM, Da Rock > wrote: > >> I can't seem to get my head on straight with the realtime scheduling in > >> FBSD despite all my googling. Can someone give me a pointer to the latest > >> info? As far as I can tell FBSD has it, but only root(?) can use it? > >> > >> I'm interested in who can use it, and how to allow a user to obtain the > >> realtime access. > > There's an ongoing discussion/debate between two very knowledgeable > and talented developers (plus a supporting cast) regarding the > real-time support in FreeBSD; it's happening on freebsd-arch@: > > http://lists.freebsd.org/pipermail/freebsd-arch/2010-December/010835.html > > I suggest giving it a read if you are planning on deploying some > real-time process (or are interested in reading about FreeBSD > internals from some very knowledgeable people). Brandon, thanks for the pointer; I love it when those guys talk dirty :) Rock, I think that thread well explains why only root may assign rtprio. It's encouraging seeing rtprio get some oil; realtime@freebsd.org has been all but dead for years, its latest message scheduling euthanasia: http://lists.freebsd.org/pipermail/freebsd-realtime/2010-November/000035.html cheers, Ian