From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S270878AbTGPK14 (ORCPT ); Wed, 16 Jul 2003 06:27:56 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S270896AbTGPK0q (ORCPT ); Wed, 16 Jul 2003 06:26:46 -0400 Received: from 224.Red-217-125-129.pooles.rima-tde.net ([217.125.129.224]:59626 "HELO cocodriloo.com") by vger.kernel.org with SMTP id S270878AbTGPKZS (ORCPT ); Wed, 16 Jul 2003 06:25:18 -0400 Date: Wed, 16 Jul 2003 12:19:49 +0200 From: Antonio Vargas To: Ingo Molnar Cc: Sean Neakums , Andrew Morton , Con Kolivas , linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: Re: 2.6.0-test1-mm1 Message-ID: <20030716101949.GE2684@wind.cocodriloo.com> References: <6uwueidhdd.fsf@zork.zork.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.3.28i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Jul 16, 2003 at 10:55:52AM +0200, Ingo Molnar wrote: > > On Wed, 16 Jul 2003, Sean Neakums wrote: > > > [...] If I keep running 'ps aux' its output does start to become slow > > again, snapping back to full speed after a few more runs. Kind of an > > odd one. > > there was a similar bug in the gnome terminal code, it was a userspace X > window-refresh/event-qeueing bug/race that was sensitive to scheduler > timings. So it can go away and come back based on precise timings. Eg. it > was more likely to happen with antialiasing turned on than off. > > Ingo It always happened to me when I run "make menuconfig" under gnome-terminal on redhat 9 with 2.5.73. Is it because of busy-waiting on a variable shared amongst multiple processes/threads? If so, it smells of a bug in the application, busy-waiting is _BAD_. Greets, Antonio -- In fact, this is all you need to know to be a Caveman Database Programmer: A relational database is a big spreadsheet that several people can update simultaneously. From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Wed, 16 Jul 2003 12:19:49 +0200 From: Antonio Vargas Subject: Re: 2.6.0-test1-mm1 Message-ID: <20030716101949.GE2684@wind.cocodriloo.com> References: <6uwueidhdd.fsf@zork.zork.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: owner-linux-mm@kvack.org Return-Path: To: Ingo Molnar Cc: Sean Neakums , Andrew Morton , Con Kolivas , linux-kernel@vger.kernel.org, linux-mm@kvack.org List-ID: On Wed, Jul 16, 2003 at 10:55:52AM +0200, Ingo Molnar wrote: > > On Wed, 16 Jul 2003, Sean Neakums wrote: > > > [...] If I keep running 'ps aux' its output does start to become slow > > again, snapping back to full speed after a few more runs. Kind of an > > odd one. > > there was a similar bug in the gnome terminal code, it was a userspace X > window-refresh/event-qeueing bug/race that was sensitive to scheduler > timings. So it can go away and come back based on precise timings. Eg. it > was more likely to happen with antialiasing turned on than off. > > Ingo It always happened to me when I run "make menuconfig" under gnome-terminal on redhat 9 with 2.5.73. Is it because of busy-waiting on a variable shared amongst multiple processes/threads? If so, it smells of a bug in the application, busy-waiting is _BAD_. Greets, Antonio -- In fact, this is all you need to know to be a Caveman Database Programmer: A relational database is a big spreadsheet that several people can update simultaneously. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: aart@kvack.org