Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965571AbWIRIVg (ORCPT ); Mon, 18 Sep 2006 04:21:36 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S965568AbWIRIVg (ORCPT ); Mon, 18 Sep 2006 04:21:36 -0400 Received: from omx2-ext.sgi.com ([192.48.171.19]:37561 "EHLO omx2.sgi.com") by vger.kernel.org with ESMTP id S965571AbWIRIVf (ORCPT ); Mon, 18 Sep 2006 04:21:35 -0400 Message-ID: <450E56ED.5050201@sgi.com> Date: Mon, 18 Sep 2006 10:21:01 +0200 From: Jes Sorensen User-Agent: Thunderbird 1.5.0.4 (X11/20060527) MIME-Version: 1.0 To: karim@opersys.com Cc: Mathieu Desnoyers , Ingo Molnar , Roman Zippel , Andrew Morton , tglx@linutronix.de, Paul Mundt , linux-kernel@vger.kernel.org, Christoph Hellwig , Ingo Molnar , Greg Kroah-Hartman , Tom Zanussi , ltt-dev@shafik.org, Michel Dagenais Subject: Re: [PATCH 0/11] LTTng-core (basic tracing infrastructure) 0.5.108 References: <450AB957.2050206@opersys.com> <20060915142836.GA9288@localhost.usen.ad.jp> <450ABE08.2060107@opersys.com> <1158332447.5724.423.camel@localhost.localdomain> <20060915111644.c857b2cf.akpm@osdl.org> <20060915181907.GB17581@elte.hu> <20060915200559.GB30459@elte.hu> <20060915202233.GA23318@Krystal> <450BCAF1.2030205@sgi.com> <20060916172419.GA15427@Krystal> <450C3A98.4060704@opersys.com> In-Reply-To: <450C3A98.4060704@opersys.com> X-Enigmail-Version: 0.94.0.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 714 Lines: 23 Karim Yaghmour wrote: > Mathieu Desnoyers wrote: >> The bottom line is : >> >> LTTng impact on the studied phenomenon : 35% slower >> >> LTTng+kprobes impact on the studied phenomenon : 73% slower >> >> Therefore, I conclude that on this type of high event rate workload, kprobes >> doubles the tracer impact on the system. > > Amen to that. Hopefully this puts to rest the myth of Mr. Scrub. If it wasn't because it's so sad, this would be hysterically funny. Jes - 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/