From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933093AbbBQOA0 (ORCPT ); Tue, 17 Feb 2015 09:00:26 -0500 Received: from mail-wg0-f43.google.com ([74.125.82.43]:41661 "EHLO mail-wg0-f43.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755703AbbBQOAZ (ORCPT ); Tue, 17 Feb 2015 09:00:25 -0500 Message-ID: <1424181620.2955.5.camel@gmail.com> Subject: Re: 3.14.23-rt20 - softirq: resurrect softirq threads From: Mike Galbraith To: Sebastian Andrzej Siewior Cc: Steven Rostedt , LKML , linux-rt-users , Thomas Gleixner , Carsten Emde , John Kacur , Clark Williams Date: Tue, 17 Feb 2015 15:00:20 +0100 In-Reply-To: <20150217130553.GL26177@linutronix.de> References: <20141031170326.1491a63f@gandalf.local.home> <1414910967.5380.81.camel@marge.simpson.net> <1414913507.5380.117.camel@marge.simpson.net> <20150217130553.GL26177@linutronix.de> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.12.10 Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 2015-02-17 at 14:05 +0100, Sebastian Andrzej Siewior wrote: > * Mike Galbraith | 2014-11-02 08:31:47 [+0100]: > > >(sirqs suck, this makes them suck less for some boxen/loads) > > > >Subject: softirq: resurrect softirq threads > >From: Mike Galbraith > >Date: Mon Jan 6 08:42:11 CET 2014 > > > >Some loads cannot tolerate the jitter induced by all softirqs being processed > >at the same priority. Let the user prioritize them again. > > > >Signed-off-by: Mike Galbraith > > I'm going to postpone this. While it might make sense in general I'm > going to wait for tglx, Steven and others to see if this is what we want > or if there are some plans redoing the softirq handling. You can postpone this one forever, they don't want it. I posted it for folks who may want the option. -Mike