Date: Wed, 13 Dec 2006 01:34:13 +0800 From: "Rong-en Fan" <grafan@gmail.com> To: "Adam McDougall" <mcdouga9@egr.msu.edu> Cc: freebsd-current@freebsd.org Subject: Re: cpufreq est and Enhanced Sleep (Cx) States for Intel Core and above Message-ID: <6eb82e0612120934h2920ccddkaeb5b0e0c038cefb@mail.gmail.com> In-Reply-To: <20061210002923.GO81923@egr.msu.edu> References: <20061210002923.GO81923@egr.msu.edu>
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On 12/10/06, Adam McDougall <mcdouga9@egr.msu.edu> wrote: > src/sys/i386/cpufreq/est.c has many Pentium M cpus but nothing > from the Intel Core and Core 2 families that I can see. I tried > looking up the values myself, but could not find them in: > http://www.intel.com/design/mobile/datashts/314078.htm > > It seems that even the latest version of the Linux kernel does not > list values for at least Yonah (Core 2). Is it a big mystery, or is > this data actually available somewhere? I have a Core 2 Duo > T7600 in my laptop and est won't touch my cpu because it doesn't > recognize it. I did get it to use some other form of speed control > by putting hint.acpi_perf.0.disabled="1" in /boot/loader.conf according > to another post. On my ThinkPad X60 with T5600. est and p4tcc work smoothly. cpu0: <ACPI CPU> on acpi0 est0: <Enhanced SpeedStep Frequency Control> on cpu0 p4tcc0: <CPU Frequency Thermal Control> on cpu0 cpu1: <ACPI CPU> on acpi0 est1: <Enhanced SpeedStep Frequency Control> on cpu1 p4tcc1: <CPU Frequency Thermal Control> on cpu1 dev.cpu.0.freq_levels: 1833/31000 1603/27125 1374/23250 1333/20000 1166/17500 1000/13000 875/11375 750/9750 625/8125 500/6500 375/4875 250/3250 125/1625 dev.est.0.freq_settings: 1833/31000 1333/20000 1000/13000 dev.p4tcc.0.freq_settings: 10000/-1 8750/-1 7500/-1 6250/-1 5000/-1 3750/-1 2500/-1 1250/-1 > Another thing I wish could work is the Enhanced cpu Sleep States; > this Dell Latitude D820 laptop only sees C1 although the document > above indicates it should probably support 4 unique states. Is > there a way I can debug and/or fix this? I can post dumps of the > acpi stuff and/or verbose boot logs if it would be helpful. Well, I have C1 only, too. For the record, I'm running 200611 current amd64 snapshot. Regards, Rong-En Fan
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