From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755998Ab2FZEkx (ORCPT ); Tue, 26 Jun 2012 00:40:53 -0400 Received: from mail-pz0-f46.google.com ([209.85.210.46]:42753 "EHLO mail-pz0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752174Ab2FZEkw (ORCPT ); Tue, 26 Jun 2012 00:40:52 -0400 Message-ID: <4FE93D51.7090709@gmail.com> Date: Mon, 25 Jun 2012 22:40:49 -0600 From: David Ahern User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7; rv:13.0) Gecko/20120614 Thunderbird/13.0.1 MIME-Version: 1.0 To: Martin Rosenberg CC: linux-kernel@vger.kernel.org Subject: Re: perf report does not get along with perf record -A References: <443195725.4576626.1340669457668.JavaMail.root@mozilla.com> In-Reply-To: <443195725.4576626.1340669457668.JavaMail.root@mozilla.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 6/25/12 6:10 PM, Martin Rosenberg wrote: > I'm working under the assumption that if I want to collect statistics from multiple runs of a program, I can do this by running > perf record prog; perf record -A prog; perf record -A prog > > I've found that running perf record twice results in perf report hanging, and running it more than twice results in perf report first spewing a message about invalid formats, then crashing. > A log of the session, as well as the binary, its input and perf.data can be found at: What does 'perf --version' show? David