From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261901AbVANEYI (ORCPT ); Thu, 13 Jan 2005 23:24:08 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261904AbVANEYI (ORCPT ); Thu, 13 Jan 2005 23:24:08 -0500 Received: from smtp104.mail.sc5.yahoo.com ([66.163.169.223]:34658 "HELO smtp104.mail.sc5.yahoo.com") by vger.kernel.org with SMTP id S261901AbVANEYD (ORCPT ); Thu, 13 Jan 2005 23:24:03 -0500 Subject: Re: [PATCH] [request for inclusion] Realtime LSM From: Nick Piggin To: Con Kolivas Cc: Andrew Morton , Paul Davis , lkml@s2y4n2c.de, rlrevell@joe-job.com, arjanv@redhat.com, joq@io.com, chrisw@osdl.org, mpm@selenic.com, hch@infradead.org, mingo@elte.hu, alan@lxorguk.ukuu.org.uk, linux-kernel@vger.kernel.org In-Reply-To: <41E7468B.3050702@kolivas.org> References: <1105669451.5402.38.camel@npiggin-nld.site> <200501140240.j0E2esKG026962@localhost.localdomain> <20050113191237.25b3962a.akpm@osdl.org> <41E739F4.1030902@kolivas.org> <1105673482.5402.58.camel@npiggin-nld.site> <41E7468B.3050702@kolivas.org> Content-Type: text/plain Date: Fri, 14 Jan 2005 15:23:58 +1100 Message-Id: <1105676638.5402.89.camel@npiggin-nld.site> Mime-Version: 1.0 X-Mailer: Evolution 2.0.1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 2005-01-14 at 15:11 +1100, Con Kolivas wrote: > Nick Piggin wrote: > > It sounds to me like both your proposals may be too complex and not > > sufficiently deterministic (I don't know for sure, maybe that's > > exactly what the RT people want). > > This is the solution already employed in the real world by OSX. It works > well, and the audio people have told me they are happy with it. > Alternatively, could you grant the required capabilities to use real RT scheduling and not foul up the scheduler? Or do a similar sort of thing with a userspace daemon that manages priorities and watches CPU usage? Basically I'd prefer not to put hacks in the (mainline) scheduler to handle this pretty specific special case. > > I could be completely off the rails though. I haven't really been > > following this thread so please shoot me in my foot if I have put it > > in my mouth. > > If your foot is in your mouth and you ask me to shoot you in the foot it > would blow your head off... Hmm it's tempting... > Meeeow!