From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755472AbaCYVG5 (ORCPT ); Tue, 25 Mar 2014 17:06:57 -0400 Received: from mga02.intel.com ([134.134.136.20]:46331 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754785AbaCYVGz (ORCPT ); Tue, 25 Mar 2014 17:06:55 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.97,730,1389772800"; d="scan'208";a="479901860" Date: Tue, 25 Mar 2014 14:06:50 -0700 From: Andi Kleen To: Stephane Eranian Cc: Andi Kleen , Arnaldo Carvalho de Melo , Ingo Molnar , LKML , Peter Zijlstra , Namhyung Kim , Jiri Olsa Subject: Re: [PATCH] tools, perf: Allow the user to disable time stamps Message-ID: <20140325210650.GI15074@tassilo.jf.intel.com> References: <1395780272-27106-1-git-send-email-andi@firstfloor.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Also here's updated data with ls -lh. 24% saving here. The perf output is actually not that inaccurate for this case. % perf record --no-time -c 100003 -p 10247 sleep 1 % ls -lh perf.data -rw------- 1 ak users 681K Mar 25 14:04 perf.data % perf record -c 100003 -p 10247 sleep 1 [ perf record: Woken up 4 times to write data ] [ perf record: Captured and wrote 0.869 MB perf.data (~37982 samples) ] % ls -lh perf.data -rw------- 1 ak users 893K Mar 25 14:04 perf.data -Andi