Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261885AbTH1Cdt (ORCPT ); Wed, 27 Aug 2003 22:33:49 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263426AbTH1Cdt (ORCPT ); Wed, 27 Aug 2003 22:33:49 -0400 Received: from main.gmane.org ([80.91.224.249]:62888 "EHLO main.gmane.org") by vger.kernel.org with ESMTP id S261885AbTH1Cds (ORCPT ); Wed, 27 Aug 2003 22:33:48 -0400 X-Injected-Via-Gmane: http://gmane.org/ To: linux-kernel@vger.kernel.org From: Charles Lepple Subject: HZ and C2 idling [was: Re: [DRIVER 2.6] amd76x_pm rediffed for 2.6.0-test4] Date: Wed, 27 Aug 2003 22:33:51 -0400 Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-Complaints-To: usenet@sea.gmane.org User-Agent: Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.4) Gecko/20030624 X-Accept-Language: en-us, en In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 697 Lines: 14 I have been using this patch for some time now. At HZ=1000, I had to set tick=10200 or more to keep ntpd happy (even with the PM timer as a time source). I broke down and changed HZ to 100, and it seems to be holding steady (still with the PM timer, though). This leads me to believe that the C2 idle/resume process takes longer than 1 ms in the worst case. Wasn't there a patch pending to allow HZ to be changed via the config interface? -C - 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/