From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-out.m-online.net (mail-out.m-online.net [212.18.0.10]) by ozlabs.org (Postfix) with ESMTP id 9AFBBDDEE7 for ; Thu, 6 Sep 2007 04:48:30 +1000 (EST) To: Johan Borkhuis From: Wolfgang Denk Subject: Re: Problems enabling NTP on ELDK Mime-version: 1.0 Content-type: text/plain; charset=ISO-8859-1 In-reply-to: Your message of "Wed, 05 Sep 2007 13:29:38 +0200." <46DE9322.7080901@dutchspace.nl> Date: Wed, 05 Sep 2007 20:48:27 +0200 Sender: wd@denx.de Message-Id: <20070905184827.26859247AF@gemini.denx.de> Cc: linuxppc-embedded@ozlabs.org List-Id: Linux on Embedded PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , In message <46DE9322.7080901@dutchspace.nl> you wrote: > > I tried enabling NTP on my embedded machine (using ELDK 4.1, ppc_85xx, > kernel version 2.6.14 with Xenomai 2.3.2). After I did that I noticed > that ksoftirqd/0 suddenly took almost all processor time (> 95%). What > is causing this? Is there a way around this, or is this something that > does not cause any problems? You probably have some poroblems in your kernel port - check the RTC driver and related modules like I2C etc. Of course this depends on the NTP configuration you use, but the only kernel interaction I can think of that could cause this is if you interact with the RTC. [I guess that normal network traffic is working fine on your board.] BTW: ELDK 4.1 comes with a 2.6.19.2 kernel - is there a special reason that you use such an obsoletel kernel tree? Best regards, Wolfgang Denk -- DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@denx.de Bankers do it with interest (penalty for early withdrawal).