> Date: Fri, 11 Jan 2008 11:51:07 +0000 > From: "Igor Mozolevsky" <igor_at_hybrid-lab.co.uk> > Sender: owner-freebsd-current_at_freebsd.org > > On 11/01/2008, Dag-Erling Smørgrav <des_at_des.no> wrote: > > > The whole point of powerd is to automatically adapt to the load. If > > your laptop "lags too much" powerd should detect that and increase the > > CPU frequency. However, poor interactive response can result when CPU > > frequency fluctuates too quickly; perhaps your problem will go away with > > Andrew's patch, which is intended to dampen such fluctuations? > > I was also thinking that the power increase probably shouldn't be > linear, maybe there should be a choice of algs: 2-step, 50%-100%, etc. > Normally you don't mind power dropping slowly, but for most things you > don't want to wait N-seconds for the clock to be stepped up to its > full throttle... The part of powerd.c that controls this is very easy to understand and modify. I write almost no C these days and I had no problems changing the adaptive algorithm to try other things. Try your idea and see how it works. -- R. Kevin Oberman, Network Engineer Energy Sciences Network (ESnet) Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab) E-mail: oberman_at_es.net Phone: +1 510 486-8634 Key fingerprint:059B 2DDF 031C 9BA3 14A4 EADA 927D EBB3 987B 3751
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