From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mike Galbraith Subject: Re: rt: rtmutex experiment doubled tbench throughput Date: Wed, 27 Feb 2013 05:55:00 +0100 Message-ID: <1361940900.4599.108.camel@marge.simpson.net> References: <1361551010.32441.50.camel@marge.simpson.net> <1361913901.11373.59.camel@gandalf.local.home> <1361932359.11373.62.camel@gandalf.local.home> <1361932513.11373.65.camel@gandalf.local.home> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Cc: Paul Gortmaker , RT , Thomas Gleixner To: Steven Rostedt Return-path: Received: from moutng.kundenserver.de ([212.227.126.187]:49329 "EHLO moutng.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758711Ab3B0EzF (ORCPT ); Tue, 26 Feb 2013 23:55:05 -0500 In-Reply-To: <1361932513.11373.65.camel@gandalf.local.home> Sender: linux-rt-users-owner@vger.kernel.org List-ID: On Tue, 2013-02-26 at 21:35 -0500, Steven Rostedt wrote: > On Tue, 2013-02-26 at 21:32 -0500, Steven Rostedt wrote: > > > Bah! As I looked in my history I see I did the following: > > > > git show v3.0:include/linux/sched.h > > git show v3.2:include/linux/sched.h > > git show v3.4:include/linux/sched.h > > > > I forgot the '-rt" on each one of them :-p > > That said... > > Only v3.0-rt has it. I'm barely supporting that now, and I'm only doing > updates that might make sense. Greg should be dropping it soon, and so > will I. There's issues in v3.0-rt that are not in v3.2-rt or above, that > I'm not going to bother debugging. Yeah, I'm stuck with 3.0, so my 3.0 is not as virgin as I would like it to be. It has threaded sirqs because I must have them, can turn cpupri and nohz on/off on the fly because I must have to have that too to make 80 core boxen with tight jitter constraint be all they can be. > I'll test a patch against the others but not one against v3.0-rt. 64 core test box has microscopic root and newer kernel drivers break its userspace. Putting a newer rt kernel on it to play is a pita, so I do big box tinkering in 3.0. I can make a 3.6 hacklet during the weekend. -Mike