From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751241AbaK0ToP (ORCPT ); Thu, 27 Nov 2014 14:44:15 -0500 Received: from mga02.intel.com ([134.134.136.20]:27049 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751006AbaK0ToO (ORCPT ); Thu, 27 Nov 2014 14:44:14 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.07,471,1413270000"; d="scan'208";a="615151215" Date: Thu, 27 Nov 2014 11:44:13 -0800 From: Andi Kleen To: Jiri Olsa Cc: linux-kernel@vger.kernel.org, Linus Torvalds , Corey Ashford , David Ahern , Frederic Weisbecker , Ingo Molnar , Matt Fleming , Namhyung Kim , Paul Mackerras , Peter Zijlstra , Stephane Eranian , Arnaldo Carvalho de Melo Subject: Re: [PATCH] perf tools: Do not fail on processing out of order event Message-ID: <20141127194413.GN10824@tassilo.jf.intel.com> References: <1417016371-30249-1-git-send-email-jolsa@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1417016371-30249-1-git-send-email-jolsa@kernel.org> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Nov 26, 2014 at 04:39:31PM +0100, Jiri Olsa wrote: > Linus reported perf report command being interrupted due to > processing of 'out of order' event, with following error: > > Timestamp below last timeslice flush > 0x5733a8 [0x28]: failed to process type: 3 > > I could reproduce the issue and in my case it was caused by one > CPU (mmap) being behind during record and userspace mmap reader > seeing the data after other CPUs data were already stored. I like the change. This problem hit me a couple of times too. -Andi