From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754801Ab1JQHhV (ORCPT ); Mon, 17 Oct 2011 03:37:21 -0400 Received: from merlin.infradead.org ([205.233.59.134]:40792 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752580Ab1JQHhT convert rfc822-to-8bit (ORCPT ); Mon, 17 Oct 2011 03:37:19 -0400 Subject: Re: [PATCH, v10 3/3] cgroups: introduce timer slack controller From: Peter Zijlstra To: Arjan van de Ven Cc: Matthew Garrett , Lennart Poettering , Andrew Morton , "Kirill A. Shutemov" , Paul Menage , Li Zefan , Thomas Gleixner , containers@lists.linux-foundation.org, jacob.jun.pan@linux.intel.com, linux-kernel@vger.kernel.org, Matt Helsley , linux-api@vger.kernel.org, Kay Sievers , harald@redhat.com, david@fubar.dk, greg@kroah.com Date: Mon, 17 Oct 2011 09:36:58 +0200 In-Reply-To: <4E9BBB6D.4050004@linux.intel.com> References: <1318349729-3108-1-git-send-email-kirill@shutemov.name> <1318349729-3108-4-git-send-email-kirill@shutemov.name> <20111014154348.ae6267aa.akpm@linux-foundation.org> <20111015112006.GA10173@tango.0pointer.de> <1318705910.2664.5.camel@laptop> <20111017013921.GA30035@tango.0pointer.de> <20111017032232.GA4816@srcf.ucam.org> <4E9BBB6D.4050004@linux.intel.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8BIT X-Mailer: Evolution 3.0.3- Message-ID: <1318837019.6594.29.camel@twins> Mime-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, 2011-10-16 at 22:21 -0700, Arjan van de Ven wrote: > and..it's not like we let the bad guys go free. > We actually seriously hurt their behavior while we throttle their timers > here. How are they hurt? The app appears to behave properly (there are no repercussions, the app doesn't crash, the developer doesn't get punched in the face). This doesn't make the developer improve his app, nor make him take greater care for the next app. Such behaviour will in fact encourage crap since he seems to be getting away with it.