From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758186Ab1JFGwb (ORCPT ); Thu, 6 Oct 2011 02:52:31 -0400 Received: from e23smtp06.au.ibm.com ([202.81.31.148]:33492 "EHLO e23smtp06.au.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750923Ab1JFGw2 (ORCPT ); Thu, 6 Oct 2011 02:52:28 -0400 Message-ID: <4E8D5028.3080406@linux.vnet.ibm.com> Date: Thu, 06 Oct 2011 12:22:24 +0530 From: "Srivatsa S. Bhat" User-Agent: Mozilla/5.0 (X11; Linux i686; rv:6.0.2) Gecko/20110906 Thunderbird/6.0.2 MIME-Version: 1.0 To: Pavel Ivanov CC: linux-kernel Subject: Re: Full lockup when compiling kernel with "optimal" number of threads References: <4E8982E3.9080809@linux.vnet.ibm.com> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 10/06/2011 03:13 AM, Pavel Ivanov wrote: > On Mon, Oct 3, 2011 at 5:39 AM, Srivatsa S. Bhat > wrote: >> On 09/03/2011 09:04 AM, Pavel Ivanov wrote: >>> Hi, >>> >>> I can reliably reproduce a complete machine lockup when compiling >>> kernel sources with "make -j". After making some progress machine >>> stops responding to anything (including CapsLock/NumLock switching or >>> mouse moving) and after hard reboot nothing is left in kern.log or >>> syslog. Only attaching a serial console gives me the following clues >>> to what happens: >>> >> By the way "optimal" is supposed to be make -j isn't it? >> IIRC, "maximal" refers to make -j > > I'm sure I didn't make up that word "optimal" by myself. I took it > from some documentation or internet, although now I can't find where I > took it from. Wherever I look it says that -j is "unbounded" number of > threads. > I was referring to the terms used by kernbench. -- Regards, Srivatsa S. Bhat Linux Technology Center, IBM India Systems and Technology Lab