From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756534Ab1JQQtr (ORCPT ); Mon, 17 Oct 2011 12:49:47 -0400 Received: from cavan.codon.org.uk ([93.93.128.6]:48600 "EHLO cavan.codon.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751778Ab1JQQtq (ORCPT ); Mon, 17 Oct 2011 12:49:46 -0400 Date: Mon, 17 Oct 2011 17:49:29 +0100 From: Matthew Garrett To: Peter Zijlstra Cc: Thomas Gleixner , Arjan van de Ven , Lennart Poettering , Andrew Morton , "Kirill A. Shutemov" , Paul Menage , Li Zefan , 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 Subject: Re: [PATCH, v10 3/3] cgroups: introduce timer slack controller Message-ID: <20111017164929.GA18620@srcf.ucam.org> References: <20111017141147.GA14581@srcf.ucam.org> <1318861707.4172.32.camel@twins> <20111017144013.GA15447@srcf.ucam.org> <1318862969.4172.45.camel@twins> <20111017145952.GB15769@srcf.ucam.org> <1318864260.4172.54.camel@twins> <20111017151920.GA16664@srcf.ucam.org> <1318864870.4172.61.camel@twins> <20111017153142.GA17047@srcf.ucam.org> <1318869404.4172.67.camel@twins> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1318869404.4172.67.camel@twins> User-Agent: Mutt/1.5.20 (2009-06-14) X-SA-Exim-Connect-IP: X-SA-Exim-Mail-From: mjg59@cavan.codon.org.uk X-SA-Exim-Scanned: No (on cavan.codon.org.uk); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Oct 17, 2011 at 06:36:44PM +0200, Peter Zijlstra wrote: > On Mon, 2011-10-17 at 16:31 +0100, Matthew Garrett wrote: > > On Mon, Oct 17, 2011 at 05:21:10PM +0200, Peter Zijlstra wrote: > > > > > Well what other cases are there? Can we enumerate them and come up > > > with similar solutions? > > > > Javascript has timers. We execute rather a lot of javascript from > > sources we can't influence at all. > > Which brings me to yet another gripe I've got with firefox, _WHY_ does > it run javascript for tabs I can't see? Simply freeze the interpreter. Because people expect gmail to provide them with status updates even if it's not the foreground tab. > Then again, what does JavaScript do with these timers? I don't really > see how javascript/random-native-binary are really different, something > needs doing. What something? I agree that the thing that needs doing probably involves web developers and threats of implied violence, but I suspect that web developers are being created faster than we can reeducate them. -- Matthew Garrett | mjg59@srcf.ucam.org