Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757704AbYHaTPF (ORCPT ); Sun, 31 Aug 2008 15:15:05 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755906AbYHaTOw (ORCPT ); Sun, 31 Aug 2008 15:14:52 -0400 Received: from wa-out-1112.google.com ([209.85.146.177]:7069 "EHLO wa-out-1112.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755900AbYHaTOv (ORCPT ); Sun, 31 Aug 2008 15:14:51 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:cc:in-reply-to:mime-version :content-type:content-transfer-encoding:content-disposition :references; b=YEnO3Dgv84Mifle0pDGH1nfeD7Tm0QVK2REivqaELoyzQaMDo9/1+//owlbxt9zNsc /Z3l95wmmQ/KrII3r6jTl9TZDw1KJJZwQKB9hozQfqwcNaghIMGNsFe6WRLu/lPuQM9+ 6FAX6ntU25mtSght1DuEZNjqL2++aDEO6ktM4= Message-ID: Date: Sun, 31 Aug 2008 21:14:50 +0200 From: "Dushan Tcholich" To: "Stephen Hemminger" Subject: Re: ksoftirqd high cpu load on kernels 2.6.24 to 2.6.27-rc1-mm1 Cc: "Francois Romieu" , "Robert Hancock" , netdev@vger.kernel.org, LKML In-Reply-To: <20080831100537.6929c51e@extreme> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <48975BD3.6040709@shaw.ca> <20080807185802.GA16327@electric-eye.fr.zoreil.com> <20080831100537.6929c51e@extreme> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1287 Lines: 41 Hi On Sun, Aug 31, 2008 at 7:05 PM, Stephen Hemminger wrote: > On Sun, 31 Aug 2008 10:51:46 +0200 > "Dushan Tcholich" wrote: > >> Hello >> I found the culprit. >> >> When using powertop I get: >> Top causes for wakeups: >> 35,2% (251,0) ip : br_stp_enable_bridge (br_hello_timer_expired >> >> So I tried to turn them off with: >> brctl sethello br0 0 >> but the problem persisted. > > > You can't turn off the hello timer, it is needed for Spanning Tree to > work. The kernel should reject requests to set hello timer < 1sec. > Most routers allow 1 - 10sec. > > I am going to do a new patch to add tighter range checking for STP timer > settings and another to default fowarding delay of zero if STP is disabled. > Well I try to turn stp off but it doesn't want to :) This is in my /etc/conf.d/net brctl_br0=( "setfd 0" "sethello 10" "stp off" ) I had problems with sethello 0 so now I'm using 10. Tried with brctl stp br0 off but still had same troubles. Have a nice day Dushan -- 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/