Date: Fri, 9 Jan 2009 06:57:58 -0500 From: "Gabriel Lavoie" <glavoie@gmail.com> To: "Garrett Cooper" <yanefbsd@gmail.com> Cc: freebsd-acpi@freebsd.org Subject: Re: EST (Enhanced Intel SpeedStep(R) Technology) on amd64 Message-ID: <d05df8620901090357h24c407aeo8e489faab6e016ca@mail.gmail.com> In-Reply-To: <7d6fde3d0901082151t4901824cv84eb6c2be2658b15@mail.gmail.com> References: <d05df8620901081551j5572b45aqbed51e2955efccc8@mail.gmail.com> <7d6fde3d0901082151t4901824cv84eb6c2be2658b15@mail.gmail.com>
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My processor seems correctly recognized by est under 7.1, I get the correct frequency/value pairs. What I would like is the automatic behaviour where the CPU is downclocked to 50% under no load, found under Windows/Linux and I would also like to know why estctrl isn't supported under amd64. I already contacted Colin. :) Gabriel > > Maybe this comment says why (from .../sys/i386/cpufreq/est.c)? > > /* > * Frequency (MHz) and voltage (mV) settings. Data from the > * Intel Pentium M Processor Datasheet (Order Number 252612), Table 5. > * > * Dothan processors have multiple VID#s with different settings for > * each VID#. Since we can't uniquely identify this info > * without undisclosed methods from Intel, we can't support newer > * processors with this table method. If ACPI Px states are supported, > * we get info from them. > */ > > Colin could give you the definite answer, but I'm pretty sure that's it... > Cheers, > -Garrett > -- Gabriel Lavoie glavoie@gmail.com
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