Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756217AbZKRCpx (ORCPT ); Tue, 17 Nov 2009 21:45:53 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755015AbZKRCpw (ORCPT ); Tue, 17 Nov 2009 21:45:52 -0500 Received: from mail-pz0-f171.google.com ([209.85.222.171]:64311 "EHLO mail-pz0-f171.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754117AbZKRCpw convert rfc822-to-8bit (ORCPT ); Tue, 17 Nov 2009 21:45:52 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type:content-transfer-encoding; b=JkyuqaWJGkPs1+u74aPYHgMZjCuMQpWRaaRiH2GFWt3XI1gumg/fubBNHRnniJJOWF tgsGbF69Ritb1loTikP++8srDhw/DB5uFLx0GvWeXcGKJ/s0PVljfRM8ewNCvj1tlK4z q+iJJ57+s5JL4Pkoap4cBx0FBAzWlcZoDTF1M= MIME-Version: 1.0 In-Reply-To: <20091118002219.163869000@alcatraz.americas.sgi.com> References: <20091118002211.709343000@alcatraz.americas.sgi.com> <20091118002219.163869000@alcatraz.americas.sgi.com> Date: Tue, 17 Nov 2009 18:45:57 -0800 Message-ID: <86802c440911171845v1dae0f27i78ee7347d0f315d0@mail.gmail.com> Subject: Re: [PATCH 1/5] x86: Limit the number of processor bootup messages From: Yinghai Lu To: Mike Travis Cc: Ingo Molnar , Thomas Gleixner , Andrew Morton , Heiko Carstens , Roland Dreier , Randy Dunlap , Tejun Heo , Andi Kleen , Greg Kroah-Hartman , "H. Peter Anvin" , David Rientjes , Steven Rostedt , Rusty Russell , Hidetoshi Seto , Jack Steiner , Frederic Weisbecker , x86@kernel.org, linux-kernel@vger.kernel.org Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1363 Lines: 32 On Tue, Nov 17, 2009 at 4:22 PM, Mike Travis wrote: > When there are a large number of processors in a system, there > is an excessive amount of messages sent to the system console. > It's estimated that with 4096 processors in a system, and the > console baudrate set to 56K, the startup messages will take > about 84 minutes to clear the serial port. > > This set of patches limits the number of repetitious messages > which contain no additional information. ?Much of this information > is obtainable from the /proc and /sysfs. ? Some of the messages > are also sent to the kernel log buffer as KERN_DEBUG messages so > dmesg can be used to examine more closely any details specific to > a problem. > > The new cpu bootup sequence for system_state == SYSTEM_BOOTING: > > Booting Node ? 0, Processors ?#1 #2 #3 #4 #5 #6 #7 Ok. > Booting Node ? 1, Processors ?#8 #9 #10 #11 #12 #13 #14 #15 Ok. > .. > Booting Node ? 3, Processors ?#56 #57 #58 #59 #60 #61 #62 #63 Ok. > Brought up 64 CPUs how about Booting Node 0, Processors #1/0x01 #2/0x02 #3.... append apic id in hex after the numbering.? YH -- 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/