From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 19323 invoked by alias); 24 Oct 2008 14:38:42 -0000 Received: (qmail 19311 invoked by uid 22791); 24 Oct 2008 14:38:42 -0000 X-Spam-Status: No, hits=-2.2 required=5.0 tests=AWL,BAYES_00,KAM_MX,SPF_HELO_PASS,SPF_PASS X-Spam-Check-By: sourceware.org Received: from mx1.redhat.com (HELO mx1.redhat.com) (66.187.233.31) by sourceware.org (qpsmtpd/0.31) with ESMTP; Fri, 24 Oct 2008 14:37:49 +0000 Received: from int-mx1.corp.redhat.com (int-mx1.corp.redhat.com [172.16.52.254]) by mx1.redhat.com (8.13.8/8.13.8) with ESMTP id m9OEbls7025073 for ; Fri, 24 Oct 2008 10:37:47 -0400 Received: from ns3.rdu.redhat.com (ns3.rdu.redhat.com [10.11.255.199]) by int-mx1.corp.redhat.com (8.13.1/8.13.1) with ESMTP id m9OEbkn7023796 for ; Fri, 24 Oct 2008 10:37:46 -0400 Received: from ton.toronto.redhat.com (ton.yyz.redhat.com [10.15.16.15]) by ns3.rdu.redhat.com (8.13.8/8.13.8) with ESMTP id m9OEbjnx029698; Fri, 24 Oct 2008 10:37:45 -0400 Received: from ton.toronto.redhat.com (localhost.localdomain [127.0.0.1]) by ton.toronto.redhat.com (8.13.1/8.13.1) with ESMTP id m9OEbjc7029402; Fri, 24 Oct 2008 10:37:45 -0400 Received: (from fche@localhost) by ton.toronto.redhat.com (8.13.1/8.13.1/Submit) id m9OEbikU029401; Fri, 24 Oct 2008 10:37:44 -0400 Date: Fri, 24 Oct 2008 14:38:00 -0000 From: "Frank Ch. Eigler" To: =?iso-8859-1?Q?Fr=E9d=E9ric?= Weisbecker Cc: Ingo Molnar , linux-kernel@vger.kernel.org, Steven Rostedt , systemtap@sources.redhat.com Subject: Re: [PATCH 5/5] tracing/ftrace: Introduce the big kernel lock tracer Message-ID: <20081024143744.GA20768@redhat.com> References: <48F10B0B.406@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: User-Agent: Mutt/1.4.1i X-Scanned-By: MIMEDefang 2.58 on 172.16.52.254 Mailing-List: contact systemtap-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Post: List-Help: , Sender: systemtap-owner@sourceware.org X-SW-Source: 2008-q4/txt/msg00199.txt.bz2 Hi - On Fri, Oct 24, 2008 at 03:43:49PM +0200, Frédéric Weisbecker wrote: > > [...] For comparison, this is how this sort of analysis may be > > done with systemtap [...] > That's a great and powerful tool. > > But just one sorrow: > I just think that's a pity that we have to use/learn a new scripting > language to use it. I understand. > I would rather prefer to use an API that provides functions/objects > for most common scripting languages. That is an interesting idea. One possible problem is that the final complete script "program" needs to be translated to something that can run quickly and safely inside the kernel. Full python or perl runtime + libraries would have been almost certainly unbearable. - FChE