Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S268730AbUJPNng (ORCPT ); Sat, 16 Oct 2004 09:43:36 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S268735AbUJPNng (ORCPT ); Sat, 16 Oct 2004 09:43:36 -0400 Received: from smtp1.netcabo.pt ([212.113.174.28]:60677 "EHLO smtp.netcabo.pt") by vger.kernel.org with ESMTP id S268730AbUJPNne (ORCPT ); Sat, 16 Oct 2004 09:43:34 -0400 Message-ID: <32819.192.168.1.5.1097934094.squirrel@192.168.1.5> In-Reply-To: <41711A08.7040905@cybsft.com> References: <20041011215909.GA20686@elte.hu> <20041012091501.GA18562@elte.hu> <20041012123318.GA2102@elte.hu> <20041012195424.GA3961@elte.hu> <20041013061518.GA1083@elte.hu> <20041014002433.GA19399@elte.hu> <20041014143131.GA20258@elte.hu> <20041014234202.GA26207@elte.hu> <20041015102633.GA20132@elte.hu> <1097888438.6737.63.camel@krustophenia.net> <1097894120.31747.1.camel@krustophenia.net> <32812.192.168.1.5.1097922568.squirrel@192.168.1.5> <41711A08.7040905@cybsft.com> Date: Sat, 16 Oct 2004 14:41:34 +0100 (WEST) Subject: Re: [patch] Real-Time Preemption, -VP-2.6.9-rc4-mm1-U3 From: "Rui Nuno Capela" To: "K.R. Foley" Cc: "Lee Revell" , "Ingo Molnar" , "linux-kernel" , mark_h_johnson@raytheon.com, "Daniel Walker" , "Bill Huey" , "Andrew Morton" , "Adam Heath" , "Lorenzo Allegrucci" , "Andrew Rodland" User-Agent: SquirrelMail/1.4.3a X-Mailer: SquirrelMail/1.4.3a MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT X-Priority: 3 (Normal) Importance: Normal X-OriginalArrivalTime: 16 Oct 2004 13:43:33.0173 (UTC) FILETIME=[20DF9650:01C4B386] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1310 Lines: 35 K.R. Foley wrote: >Rui Nuno Capela: >> >> I run both, on different machines. >> >> I'm actually running 2.6.9-rc4-mm1-U3 at this very moment, on my laptop >> (P4 2.53Ghz/UP, Mdk 10.1c) and also on my desktop machine (P4 >> 2.80Ghz/SMP/HT, SuSE 9.1). >> >> However, on the desktop (SMP/HT) I could only made it boot/init >> successfully with CONFIG_PREEMPT_REALTIME off. On my laptop (UP) is >> running pretty well on full RT. > > I'm curious what you get when you try to boot the SMP system with > REALTIME on? My SMP/HT system at the office works fine with this. > Although there is one difference that jumps out at me. I have disabled > ACPI. I don't have the config handy so I can't do a complete comparison, > just going from memory. > Hmm. The way I see it, if I say acpi=off on kernel boot, I loose HT, and end in a SMP enabled kernel running on only one CPU. To keep ACPI disabled but rely on it to show up those hyperthreaded virtual cpus on boot, one should say acpi=ht, I guess. Is that what you're asking? -- rncbc aka Rui Nuno Capela rncbc@rncbc.org - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/