Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030231AbVLVRXP (ORCPT ); Thu, 22 Dec 2005 12:23:15 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1030229AbVLVRXP (ORCPT ); Thu, 22 Dec 2005 12:23:15 -0500 Received: from pentafluge.infradead.org ([213.146.154.40]:11954 "EHLO pentafluge.infradead.org") by vger.kernel.org with ESMTP id S1030223AbVLVRXO (ORCPT ); Thu, 22 Dec 2005 12:23:14 -0500 Date: Thu, 22 Dec 2005 17:23:03 +0000 From: Christoph Hellwig To: William Cohen Cc: Christoph Hellwig , Stephane Eranian , Andrew Morton , linux-kernel@vger.kernel.org, perfmon@napali.hpl.hp.com, linux-ia64@vger.kernel.org, perfctr-devel@lists.sourceforge.net Subject: Re: [Perfctr-devel] Re: quick overview of the perfmon2 interface Message-ID: <20051222172303.GC6038@infradead.org> Mail-Followup-To: Christoph Hellwig , William Cohen , Stephane Eranian , Andrew Morton , linux-kernel@vger.kernel.org, perfmon@napali.hpl.hp.com, linux-ia64@vger.kernel.org, perfctr-devel@lists.sourceforge.net References: <20051219113140.GC2690@frankl.hpl.hp.com> <20051220025156.a86b418f.akpm@osdl.org> <20051222115632.GA8773@frankl.hpl.hp.com> <20051222120558.GA31303@infradead.org> <43AAC854.6020608@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <43AAC854.6020608@redhat.com> User-Agent: Mutt/1.4.2.1i X-SRS-Rewrite: SMTP reverse-path rewritten from by pentafluge.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1153 Lines: 23 On Thu, Dec 22, 2005 at 10:37:56AM -0500, William Cohen wrote: > Both OProfile and PAPI are open source and could use such an performance > monitoring interface. > > One of the problems right now is there is a patchwork of performance > monitoring support. Each instrumentation system has its own set of > drivers/patches. Few have support integrated into the kernel, e.g. > OProfile. However, the OProfile driver provides only a subset of the > performance monitoring support, system-wide sampling. The OProfile > driver doesn't allow per-thread monitoring or stopwatch style > measurement, which can be very useful for some performance monitoring > applications. What about improving oprofile then? Unlike the vtune or perfoman people the oprofile authors have shown they actually are able to design sensible interfaces, and oprofile has broad plattform support over most support architectures. - 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/