Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756613Ab0KSTbu (ORCPT ); Fri, 19 Nov 2010 14:31:50 -0500 Received: from mailout-de.gmx.net ([213.165.64.22]:32999 "HELO mail.gmx.net" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with SMTP id S1756277Ab0KSTbs (ORCPT ); Fri, 19 Nov 2010 14:31:48 -0500 X-Authenticated: #14349625 X-Provags-ID: V01U2FsdGVkX1+GNkoSaaKGZsL6SB9n8DcMEoGGwZP0pqPcjzHgGG jNdwv3iMWoaKdX Subject: Re: [RFC/RFT PATCH v3] sched: automated per tty task groups From: Mike Galbraith To: Linus Torvalds Cc: David Miller , mzxreary@0pointer.de, tytso@mit.edu, bgamari.foss@gmail.com, a.p.zijlstra@chello.nl, debiandev@gmail.com, alan@lxorguk.ukuu.org.uk, dhaval.giani@gmail.com, vgoyal@redhat.com, oleg@redhat.com, markus@trippelsdorf.de, mathieu.desnoyers@efficios.com, mingo@elte.hu, linux-kernel@vger.kernel.org, balbir@linux.vnet.ibm.com In-Reply-To: References: <20101119.082944.226775934.davem@davemloft.net> <20101119163430.GA12353@tango.0pointer.de> <20101119.084302.71115175.davem@davemloft.net> Content-Type: text/plain; charset="UTF-8" Date: Fri, 19 Nov 2010 12:31:27 -0700 Message-ID: <1290195087.24581.27.camel@maggy.simson.net> Mime-Version: 1.0 X-Mailer: Evolution 2.30.1.2 Content-Transfer-Encoding: 7bit X-Y-GMX-Trusted: 0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 907 Lines: 20 On Fri, 2010-11-19 at 09:51 -0800, Linus Torvalds wrote: > And you really _can_ combine them. As mentioned, I'd be nervous about > AIM benchmarks. I keep mentioning AIM, but that's because it has shown > odd tty issues before. Back when the RT guys wanted to do that crazy > blocking BKL thing (replace the spinlock with a semaphore), AIM7 > plummeted by 40%. And people were looking all over the place (file > locking etc), and the tty layer was the biggest reason iirc. If I were home, I'd have already checked out AIM7 and more, but I didn't load laptop up with all my toys unfortunately. (or fortunately, since T130 ain't exactly a speed daemon) -Mike -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/