From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Thu, 21 Feb 2008 11:38:07 +0000 (GMT) Received: from localhost.localdomain ([127.0.0.1]:40929 "EHLO dl5rb.ham-radio-op.net") by ftp.linux-mips.org with ESMTP id S28575546AbYBULiF (ORCPT ); Thu, 21 Feb 2008 11:38:05 +0000 Received: from denk.linux-mips.net (denk.linux-mips.net [127.0.0.1]) by dl5rb.ham-radio-op.net (8.14.1/8.13.8) with ESMTP id m1LBc5fa009647; Thu, 21 Feb 2008 11:38:05 GMT Received: (from ralf@localhost) by denk.linux-mips.net (8.14.1/8.14.1/Submit) id m1LBc4A4009646; Thu, 21 Feb 2008 11:38:04 GMT Date: Thu, 21 Feb 2008 11:38:04 +0000 From: Ralf Baechle To: Shailesh Suman Cc: linux-mips@linux-mips.org Subject: Re: Tickless feature of 2.6.24 kernel on MIPS ? Message-ID: <20080221113804.GA8894@linux-mips.org> References: <812554.37524.qm@web51603.mail.re2.yahoo.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <812554.37524.qm@web51603.mail.re2.yahoo.com> User-Agent: Mutt/1.5.17 (2007-11-01) Return-Path: X-Envelope-To: <"|/home/ecartis/ecartis -s linux-mips"> (uid 0) X-Orcpt: rfc822;linux-mips@linux-mips.org Original-Recipient: rfc822;linux-mips@linux-mips.org X-archive-position: 18284 X-ecartis-version: Ecartis v1.0.0 Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org X-original-sender: ralf@linux-mips.org Precedence: bulk X-list: linux-mips On Wed, Feb 20, 2008 at 10:11:37PM -0800, Shailesh Suman wrote: > The 2.6.24.x kernel has Tickless (Power Management) feature for MIPS. Has anyone tried it for MIPS boards like Malta. > > If anyone has tried it please let me know, if Tickless (CONFIG_NO_HZ) is working fine. How is the power saving was measured and do you have any figures in terms of savings it can give. It works except for SMTC which does it's own rather complicated time keeping thing and the mix of SMTC and dyntick turned out to be rather fragile. Ralf