Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757431AbXKOEsQ (ORCPT ); Wed, 14 Nov 2007 23:48:16 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754808AbXKOEsB (ORCPT ); Wed, 14 Nov 2007 23:48:01 -0500 Received: from ozlabs.org ([203.10.76.45]:43312 "EHLO ozlabs.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754763AbXKOEsB (ORCPT ); Wed, 14 Nov 2007 23:48:01 -0500 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <18235.53083.327055.165958@cargo.ozlabs.ibm.com> Date: Thu, 15 Nov 2007 15:47:23 +1100 From: Paul Mackerras To: dean gaudet Cc: Andi Kleen , Christoph Hellwig , Andrew Morton , Greg KH , Philip Mucci , eranian@hpl.hp.com, William Cohen , Robert Richter , linux-kernel@vger.kernel.org Subject: Re: [perfmon] Re: [perfmon2] perfmon2 merge news In-Reply-To: References: <20071113151718.GA3804@erda.amd.com> <4739C42F.8030208@redhat.com> <20071113175545.GD4319@frankl.hpl.hp.com> <53F4663B-CFBA-44E4-8283-BAAC8C8F1AFF@cs.utk.edu> <20071113185924.GA22748@suse.de> <20071113120728.4342e7d7.akpm@linux-foundation.org> <18234.41652.199520.31261@cargo.ozlabs.ibm.com> <20071114103805.GA16652@infradead.org> <18234.53558.883970.87414@cargo.ozlabs.ibm.com> <20071114110009.GA17833@infradead.org> X-Mailer: VM 7.19 under Emacs 21.4.1 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 967 Lines: 21 dean gaudet writes: > actually multiplexing is the main feature i am in need of. there are an > insufficient number of counters (even on k8 with 4 counters) to do > complete stall accounting or to get a general overview of L1d/L1i/L2 cache > hit rates, average miss latency, time spent in various stalls, and the > memory system utilization (or HT bus utilization). this runs out to > something like 30 events which are interesting... and re-running a > benchmark over and over just to get around the lack of multiplexing is a > royal pain in the ass. So by "multiplexing" do you mean the ability to have multiple event sets associated with a context and have the kernel switch between them automatically? Paul. - 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/