From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from sc8-sf-mx1-b.sourceforge.net ([10.3.1.91] helo=mail.sourceforge.net) by sc8-sf-list1-new.sourceforge.net with esmtp (Exim 4.43) id 1IxmDS-0002RX-4v for user-mode-linux-devel@lists.sourceforge.net; Thu, 29 Nov 2007 08:26:18 -0800 Received: from mx2.mail.elte.hu ([157.181.151.9]) by mail.sourceforge.net with esmtps (TLSv1:AES256-SHA:256) (Exim 4.44) id 1IxmDR-0006nt-BI for user-mode-linux-devel@lists.sourceforge.net; Thu, 29 Nov 2007 08:26:17 -0800 Date: Thu, 29 Nov 2007 17:25:56 +0100 From: Ingo Molnar Message-ID: <20071129162556.GA4268@elte.hu> References: <20071128150637.GA5518@c2.user-mode-linux.org> <20071128182935.GA8048@c2.user-mode-linux.org> <20071129105744.GI10577@elte.hu> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: Subject: Re: [uml-devel] scheduling anomaly on uml (was: -rt doesn't compile for UML) List-Id: The user-mode Linux development list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: user-mode-linux-devel-bounces@lists.sourceforge.net Errors-To: user-mode-linux-devel-bounces@lists.sourceforge.net To: Miklos Szeredi Cc: jdike@addtoit.com, linux-kernel@vger.kernel.org, user-mode-linux-devel@lists.sourceforge.net * Miklos Szeredi wrote: > > to get symbolic stack backdumps for the wakeup points, and add > > trace_special_sym() calls to generate extra stackdump entries at > > arbitrary places. schedule() does not have it right now - it might > > make sense to add it. > > OK, this helped. > > It looks like the delays are caused by the page allocator, and not > UML. Which is good news, because I'm supposed to understand memory > management better than scheduling. heh :-) Scheduling isnt hard either - and looking at traces (especially with mcount_enabled=1) certainly helps. Ingo ------------------------------------------------------------------------- SF.Net email is sponsored by: The Future of Linux Business White Paper from Novell. From the desktop to the data center, Linux is going mainstream. Let it simplify your IT future. http://altfarm.mediaplex.com/ad/ck/8857-50307-18918-4 _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel