Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755154Ab3HWNB3 (ORCPT ); Fri, 23 Aug 2013 09:01:29 -0400 Received: from fold.natur.cuni.cz ([195.113.57.32]:51222 "EHLO fold.natur.cuni.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753563Ab3HWNB2 (ORCPT ); Fri, 23 Aug 2013 09:01:28 -0400 Message-ID: <52175D45.4010506@fold.natur.cuni.cz> Date: Fri, 23 Aug 2013 15:01:57 +0200 From: Martin Mokrejs User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:23.0) Gecko/20100101 Firefox/23.0 SeaMonkey/2.20 MIME-Version: 1.0 To: Martin Mokrejs , Peter Zijlstra CC: Theodore Tso , Thomas Gleixner , mingo@redhat.com, LKML , Johannes Berg Subject: Re: [sched_delayed] sched: RT throttling activated References: <521722EE.70209@fold.natur.cuni.cz> <20130823100913.GQ31370@twins.programming.kicks-ass.net> <52173BBD.3050803@fold.natur.cuni.cz> <20130823110254.GU31370@twins.programming.kicks-ass.net> <521748FC.10809@fold.natur.cuni.cz> <20130823121004.GW31370@twins.programming.kicks-ass.net> <5217599C.3080707@fold.natur.cuni.cz> In-Reply-To: <5217599C.3080707@fold.natur.cuni.cz> X-Enigmail-Version: 1.5.2 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1462 Lines: 40 Martin Mokrejs wrote: >>>> Nope, you get that message once to tell you that we throttle RT tasks. >>> >>> I think the message could improved to explain this is a warn ONCE message and >>> that there is no "[sched_delayed] sched: RT throttling deactivated" counterpart >>> message to be anticipated. >> >> Would something like: >> >> sched: [ONCE] RT throttle hit -- inspect system configuration. >> >> Be a better message? > > Not really. I would prefer something like: > > [sched_delayed] sched: stopped running $cmd on CPU%d in favor of RR/FIFO task $psname Actually, to retain the message text appearing in current kernel so that people can find by e.g. Google newer syntax and possibly this thread maybe much better would be: [sched_delayed] sched: RT throttling limit $d hit. Stopped running $cmd on CPU%d in favor of RR/FIFO task $psname. Will not issue any more these messages until reboot. I know, looong line. I just realized this is about some threshold limit value, and you mean that iwlwifi contributed the highest increase compared to the other kernel threads on my system. sysctl -q -a | grep -i limit does not show what is the actual value. Am probably looking into a wrong place. ;-) -- 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/