intel atom N2600 cpu freq_levels on 10.2

[Dr. Nikolaus Klepp]

Am Sonntag, 27. September 2015 schrieb Matthew Luckie:
> Hi
> 
> I just updated to FreeBSD 10.2, and I'm noticing that the CPU frequency
> levels available are much more limited compared to FreeBSD 10.1 on the
> same system.  For my intel atom n2600, the lowest level available is
> 600Mhz, whereas with 10.1 it was 75Mhz.
> 
> I've put my dmesg from boot at:
> 
> http://www.caida.org/~mjl/atom-2600-dmesg.txt
> 
> dev.cpu.0.cx_usage: 100.00% 0.00% 0.00% last 3645us
> dev.cpu.0.cx_lowest: C1
> dev.cpu.0.cx_supported: C1/1/1 C2/2/20 C3/3/100
> dev.cpu.0.freq_levels: 1600/2000 1400/1720 1200/1440 1000/1160 800/880
> 600/600
> dev.cpu.0.freq: 600
> dev.cpu.0.temperature: 34.0C
> dev.cpu.0.coretemp.throttle_log: 0
> dev.cpu.0.coretemp.tjmax: 100.0C
> dev.cpu.0.coretemp.resolution: 1
> dev.cpu.0.coretemp.delta: 65
> dev.cpu.0.%parent: acpi0
> dev.cpu.0.%pnpinfo: _HID=none _UID=0
> dev.cpu.0.%location: handle=\_PR_.CPU0
> dev.cpu.0.%driver: cpu
> dev.cpu.0.%desc: ACPI CPU
> 
> Is there anything simple I can do to obtain the lower CPU frequency levels?
> 
> Matthew
> 
> 

Hi!

Please take a look here:

https://forums.freebsd.org/threads/cpu-consumes-more-energy-after-upgrade-from-10-1-to-10-2.52835/


Nik

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