From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751945Ab1KKKKP (ORCPT ); Fri, 11 Nov 2011 05:10:15 -0500 Received: from relay.medianet-world.de ([213.157.0.172]:12803 "HELO relay.medianet-world.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1751350Ab1KKKKN convert rfc822-to-8bit (ORCPT ); Fri, 11 Nov 2011 05:10:13 -0500 Thread-Index: AcygWEuRDbM5sNieSriKOpKmMJ/yzA== Thread-Topic: RT Throtteling with PREEMT-RT on UBIFS root fs update Content-Class: urn:content-classes:message Importance: normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.4862 From: "Tim Sander" Organization: Hottinger Baldwin Messtechnik To: "linux-rt-users" Subject: RT Throtteling with PREEMT-RT on UBIFS root fs update Date: Fri, 11 Nov 2011 10:56:53 +0100 User-Agent: KMail/1.13.5 (Linux/3.0.3; KDE/4.4.5; x86_64; ; ) Cc: "LKML" MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 8BIT Message-ID: <201111111056.53803.tim.sander@hbm.com> X-OriginalArrivalTime: 11 Nov 2011 09:57:17.0008 (UTC) FILETIME=[4B6FB500:01CCA058] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi We are having a problem with a slightly patched (some platform patches, newest stable ubifs patches) 3.0.7-rt20 kernel after updating the firmware on the first boot we get a message: sched: RT throttling activated and ksoftirqd/0 taking 95% of the cpu time. Interestingly this only happens after the ubifs root has been updated on the first boot (and not allways). Subsequent boot problems have not been seen. Any ideas whats causing this? Tim Sorry for noise below, please ignore: Hottinger Baldwin Messtechnik GmbH, Im Tiefen See 45, 64293 Darmstadt, Germany | www.hbm.com Registered as GmbH (German limited liability corporation) in the commercial register at the local court of Darmstadt, HRB 1147 Company domiciled in Darmstadt | CEO: Andreas Huellhorst | Chairman of the board: James Charles Webster Als Gesellschaft mit beschraenkter Haftung eingetragen im Handelsregister des Amtsgerichts Darmstadt unter HRB 1147 Sitz der Gesellschaft: Darmstadt | Geschaeftsfuehrung: Andreas Huellhorst | Aufsichtsratsvorsitzender: James Charles Webster The information in this email is confidential. It is intended solely for the addressee. If you are not the intended recipient, please let me know and delete this email. Die in dieser E-Mail enthaltene Information ist vertraulich und lediglich fur den Empfaenger bestimmt. Sollten Sie nicht der eigentliche Empfaenger sein, informieren Sie mich bitte kurz und loeschen diese E-Mail.