Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755038AbcLSN40 convert rfc822-to-8bit (ORCPT ); Mon, 19 Dec 2016 08:56:26 -0500 Received: from mondschein.lichtvoll.de ([194.150.191.11]:44037 "EHLO mail.lichtvoll.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752752AbcLSN4Y (ORCPT ); Mon, 19 Dec 2016 08:56:24 -0500 X-Greylist: delayed 354 seconds by postgrey-1.27 at vger.kernel.org; Mon, 19 Dec 2016 08:56:24 EST From: Martin Steigerwald To: Peter Zijlstra Cc: Martin Steigerwald , Ingo Molnar , Andrew Morton , Ingo Molnar , LKML , Nicolas Dichtel , Balbir Singh , Shailabh Nagar , Jay Lan , Gerlof Langeveld , Marc Haber Subject: Re: [REGRESSION] Two issues that prevent process accounting (taskstats) from working correctly Date: Mon, 19 Dec 2016 14:50:25 +0100 Message-ID: <1657770.QZ4bSFPITW@merkaba> User-Agent: KMail/5.2.3 (Linux/4.8.14-tp520-btrfstrim+; KDE/5.28.0; x86_64; ; ) In-Reply-To: <20161219131911.GF3107@twins.programming.kicks-ass.net> References: <5967400.cFS0L5jxeH@merkaba> <20161219131911.GF3107@twins.programming.kicks-ass.net> MIME-Version: 1.0 Content-Transfer-Encoding: 8BIT Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1078 Lines: 24 Am Montag, 19. Dezember 2016, 14:19:11 CET schrieb Peter Zijlstra: > On Mon, Dec 19, 2016 at 01:06:00PM +0100, Martin Steigerwald wrote: > > Hello Ingo, Peter, Nicolas, Andrew, Balbir, Shailabh, Jay, Gerlof and > > Marc, > > > > starting from a Debian bug report of mine, Gerlof Langeveld, developer of > > system and process monitor atop¹, found two issues with process > > accounting. > > While $subject says regression the rest of the email completely fails to > mentions if this ever worked, and if so, against what version. Sorry for not mentioning it here. With kernel 3.16 process accounting worked nicely. We do not have any data on the exact kernel version where it started to fail. I do see these issues since quite a while, but I was never sure whether it was an issue in atop or the kernel and I do not recall on what exact combination of atop + kernel version it failed to work. As an additional notice: The mail addresses of Balbir and Shailabh which I got from source code annotations of taskstats.c and getdelays.c do not work anymore. -- Martin