From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932069AbZH0AbD (ORCPT ); Wed, 26 Aug 2009 20:31:03 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754289AbZH0AbC (ORCPT ); Wed, 26 Aug 2009 20:31:02 -0400 Received: from bombadil.infradead.org ([18.85.46.34]:55843 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754205AbZH0AbB (ORCPT ); Wed, 26 Aug 2009 20:31:01 -0400 Date: Wed, 26 Aug 2009 20:30:47 -0400 From: Christoph Hellwig To: Ingo Molnar Cc: rostedt@goodmis.org, fweisbec@gmail.com, acme@redhat.com, jens.axboe@oracle.com, linux-kernel@vger.kernel.org Subject: blktrace ftrace plugin, was Re: Receive side performance issue with multi-10-GigE and NUMA Message-ID: <20090827003047.GA30341@infradead.org> References: <20090826181502.GC13632@elte.hu> <20090826190435.GC10816@hmsreliant.think-freely.org> <20090826190830.GF13632@elte.hu> <20090826.123631.79533250.davem@davemloft.net> <20090826194835.GA16508@elte.hu> <20090826202344.GE10816@hmsreliant.think-freely.org> <20090826204027.GA21159@elte.hu> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20090826204027.GA21159@elte.hu> User-Agent: Mutt/1.5.19 (2009-01-05) X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Aug 26, 2009 at 10:40:27PM +0200, Ingo Molnar wrote: > We are also converting non-trivial plugins to generic tracepoints. A > recent example are the system call tracepoints, but we also > converted blktrace and kmemtrace to generic tracepoints. On something semi-related: Any reason to keep the blktrace ftrace plugin around? I don't think there's much point in it. It only got added in 2.6.29, and all the blktrace tooling just uses the legacy ioctls. All new uses should just use the TRACE_EVENT output.