Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761246AbXK1MvN (ORCPT ); Wed, 28 Nov 2007 07:51:13 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1759494AbXK1Mus (ORCPT ); Wed, 28 Nov 2007 07:50:48 -0500 Received: from mx2.mail.elte.hu ([157.181.151.9]:36348 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758773AbXK1Mur (ORCPT ); Wed, 28 Nov 2007 07:50:47 -0500 Date: Wed, 28 Nov 2007 13:50:30 +0100 From: Ingo Molnar To: Miklos Szeredi Cc: jdike@addtoit.com, user-mode-linux-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org Subject: Re: -rt doesn't compile for UML Message-ID: <20071128125030.GB21791@elte.hu> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.17 (2007-11-01) X-ELTE-VirusStatus: clean X-ELTE-SpamScore: -1.5 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-1.5 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.2.3 -1.5 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0029] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 841 Lines: 27 * Miklos Szeredi wrote: > When writing a big file to a ubd disk, everything in uml slows down to > a crawl, even though CPU usage is minimal. > > So I wanted to try the latency tracer from -rt, but it doesn't compile > with UML: note that there are standalone patches as well: http://people.redhat.com/mingo/latency-tracing-patches/ so there's no forced need to use -rt. > Ingo, do you think this route is worthwhile pursuing, or is it too > difficult to make -rt work for UML? -rt should work for UML as well - but it needs porting (as every architecture). Ingo - 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/