Date: Sun, 28 Jun 2009 13:32:45 -0700 From: "Kevin Oberman" <oberman@es.net> To: Alexander Motin <mav@FreeBSD.org> Cc: freebsd-acpi@freebsd.org Subject: Re: acpi/cpu scaling probs? Dell D820 FreeBSD current Message-ID: <20090628203245.B10F01CC2E@ptavv.es.net> In-Reply-To: Your message of "Sun, 28 Jun 2009 21:55:48 %2B0300." <4A47BCB4.2040701@FreeBSD.org>
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> Date: Sun, 28 Jun 2009 21:55:48 +0300 > From: Alexander Motin <mav@FreeBSD.org> > Sender: owner-freebsd-acpi@freebsd.org > > Ron Freidel wrote: > > I hope I am posting to the correct list... > > > > I have updated to FreeBSD current to try out acpi sleep, which works great > > by the way, and the improvements to wifi and the addition of sleep are > > enough to keep current on the laptop. > > > > Here's the problem, the cpu is maxed out, no scaling at all. > > > > Here's the output of powerd -v > > <snip> > > load 108%, current freq 2000 MHz ( 0), wanted freq 4000 MHz > > load 109%, current freq 2000 MHz ( 0), wanted freq 4000 MHz > > load 102%, current freq 2000 MHz ( 0), wanted freq 4000 MHz > > load 124%, current freq 2000 MHz ( 0), wanted freq 4000 MHz > > load 108%, current freq 2000 MHz ( 0), wanted freq 4000 MHz > > <snip> > ^^^ > This is the reason. powerd sees that one of your CPUs is constantly > busy. You should investigate why and what that CPU does. Agreed, but that still does not explain why it keeps trying to set the clock to 4 GHz on a 2 GHz system. Not too surprising that it does not work. :-) You have been much more involved in powerd than I have been in recent times, so maybe there is a good reason for this that I don't understand. I have not looked at the powerd sources in at least three years. I really wish more people would monitor their systems with gkrellm2, gnome-system-monitor or some KDE tool. I like gkrellm2 because it is very compact and I can leave it on my screen all of the time. When some process takes off and tries the eat the system, at least I notice it right away. (My CPU graph is currently solid green, but I am transcoding some video, so I expect if to be.) -- R. Kevin Oberman, Network Engineer Energy Sciences Network (ESnet) Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab) E-mail: oberman@es.net Phone: +1 510 486-8634 Key fingerprint:059B 2DDF 031C 9BA3 14A4 EADA 927D EBB3 987B 3751
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