From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeremy Fitzhardinge Subject: Re: Dynamic frequency governor Date: Fri, 17 Oct 2003 22:00:36 -0700 Sender: cpufreq-bounces@www.linux.org.uk Message-ID: <1066453236.7590.4.camel@ixodes.goop.org> References: Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: cpufreq-bounces@www.linux.org.uk Content-Type: text/plain; charset="us-ascii" To: "Moore, Robert" Cc: cpufreq list On Fri, 2003-10-17 at 14:14, Moore, Robert wrote: > Hi all, > > I've been chartered to implement a multi-state algorithm for Linux; > this will be a new governor that adjusts the CPU frequency based upon > percent CPU utilization as reported from the kernel idle handler. > > Has any work been done (or is being done) in this area? I don't want to > rewrite the wheel. Speedfreq (http://www.goop.org/~jeremy/speedfreq) does this in userspace. I'm not sure there's much win in putting it into the kernel, but a better idle measurement would be nice (I use /proc/uptime, which can only be reliably polled a couple of times a second). J