Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760078Ab0KSBlg (ORCPT ); Thu, 18 Nov 2010 20:41:36 -0500 Received: from hrndva-omtalb.mail.rr.com ([71.74.56.124]:62289 "EHLO hrndva-omtalb.mail.rr.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751944Ab0KSBle (ORCPT ); Thu, 18 Nov 2010 20:41:34 -0500 X-Authority-Analysis: v=1.1 cv=kXGwZUU/u1JTMRv8Axk4W0omja+vfTT+sGlOkodD8F8= c=1 sm=0 a=T9ZRXmIXaAQA:10 a=Q9fys5e9bTEA:10 a=OPBmh+XkhLl+Enan7BmTLg==:17 a=knx9HKqwbM99dawkhRAA:9 a=UkXUt4oP3n7D1Nqyj9pnS60dX5kA:4 a=PUjeQqilurYA:10 a=OPBmh+XkhLl+Enan7BmTLg==:117 X-Cloudmark-Score: 0 X-Originating-IP: 67.242.120.143 Subject: Re: Benchmarks of kernel tracing options (ftrace and ktrace) From: Steven Rostedt To: Michael Rubin Cc: David Sharp , linux-kernel@vger.kernel.org, Mathieu Desnoyers , Ingo Molnar , Andrew Morton , Frederic Weisbecker In-Reply-To: References: <1287013830.3673.224.camel@frodo> <1289950335.30543.8.camel@gandalf.stny.rr.com> Content-Type: text/plain; charset="ISO-8859-15" Date: Thu, 18 Nov 2010 20:41:31 -0500 Message-ID: <1290130891.30543.127.camel@gandalf.stny.rr.com> Mime-Version: 1.0 X-Mailer: Evolution 2.30.3 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 840 Lines: 26 On Thu, 2010-11-18 at 17:11 -0800, Michael Rubin wrote: > > I did tell him that some ring buffer improvements did make it into the > > kernel. You might want to try the latest mainline again. > > You told me that you had patches (in 2.6.37) I think that would allow > us to specifically improve the syscall tracing performance. > > Can you point us at em? Look at commits: afcc5c6872f0215d515a637041bb51f8691a8ea7 69d1b839f7eee347e357b3f6cce7f630cc6ff93d 140ff89127c74b1b1c1b0152a36ea3720ccf6bc3 d9abde2138e0a00a0d7e44676928efa0ef629d48 b8b2663bd7c9da04ac804659b9f617c199d0252c -- Steve -- 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/