From mboxrd@z Thu Jan 1 00:00:00 1970 From: Manuel Selva Subject: Re: Perf mem report Data Object Date: Thu, 06 Nov 2014 15:06:01 +0100 Message-ID: <545B8049.4050207@gmail.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mail-wg0-f53.google.com ([74.125.82.53]:65442 "EHLO mail-wg0-f53.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750998AbaKFOGH (ORCPT ); Thu, 6 Nov 2014 09:06:07 -0500 Received: by mail-wg0-f53.google.com with SMTP id b13so1274489wgh.12 for ; Thu, 06 Nov 2014 06:06:04 -0800 (PST) Received: from [134.214.61.216] (anyconnect216.insa-lyon.fr. [134.214.61.216]) by mx.google.com with ESMTPSA id hu3sm7955189wjb.17.2014.11.06.06.06.02 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 06 Nov 2014 06:06:02 -0800 (PST) In-Reply-To: Sender: linux-perf-users-owner@vger.kernel.org List-ID: To: linux-perf-users@vger.kernel.org Hi, I am again wondering why I have this issue about /tmp/perf-pid.map file. Can anyone explain why it's not there and what this file should contain ? Thanks, ---- Manu On 01/29/2014 02:53 PM, Manuel Selva wrote: > Hi all, > > The perf mem report tools shows me a warning before printing results: > > Failed to open /tmp/perf-8741.map, continuing without symbols > > Then it seems that all the memory accesses which source address (Data > Symbol field in perf mem rep output) is located in the heap of the > profiled process is reported as "perf-8741.map" in the Data Object > field. > > I am not sure to understand what this file is, what it should contain, > and why it's not created when my process is profiled ? > > Moreover, I am wondering what perf mem could report for heap data > object in addition to the fact that the object is in the heap ? > > Thanks, > > ------- > Manu >