Messages in this thread | | | Date | Mon, 25 Jan 2010 07:41:25 -0500 (EST) | From | Justin Piszcz <> | Subject | Re: High pitch noise when ACPI processor module is loaded. |
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On Mon, 25 Jan 2010, Henrique de Moraes Holschuh wrote:
> On Mon, 25 Jan 2010, Justin Piszcz wrote: >> So the question remains, is it possible to utilize turbo boost (in Linux) >> without the high pitch noise from the ACPI processor module? > > Well, I am tempted to say you should consider getting a higher quality > motherboard (or, if it is just yours that sing, get it replaced on warranty > as that would mean you got one with bad components). > > That said, if Windows can get that motherboard to shut up, so should Linux. > You just need to find the right knob to push that will make the power draw > behaviour more like whatever Windows is doing. > > The first good bet is to limit core C-state depth, e.g, to C3 (instead of > C5/C6), and if thet doesn't work, to C2. After that, you can try limiting > package C-states if your BIOS will let you (I don't know if we can do that > distinction in Linux right now... do we?), play with cpufreq limiting the > core frequency changes, etc. > > And of course, try all scheduler frequencies, with and without NO_HZ. > > What motherboard is this? Intel's DP55KG Extreme motherboard, yes I will try changing the c-state later and hopefully that will fix the problem, thanks. Again, the board never makes any noise in the BIOS or Windows or Linux, only when you load the cpufreq-processor module.
Justin.
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