HEADSUP: cpufreq import complete, acpi_throttling changed

Nate Lawson nate at root.org
Sat Feb 19 10:51:18 PST 2005


Morten Rodal wrote:
> On Sunday 06 February 2005 22:21, Nate Lawson wrote:
> 
>>If you have throttling, please test the new configuration to be sure it
>>still works as before.  Final upcoming work will be manpage support and
>>bugfixing as necessary.
>>
> 
> 
> Throttling used to work on my Dell Inspiron 8200, but with the new 
> cpufreq/acpi_perf I only get errors when trying to set a new cpu 
> frequency, like this:
> 
> # sysctl dev.cpu.0.freq=1200
> acpi_perf0: Px transition to 1200 failed
> acpi_perf0: set freq failed, err 6
> 
> Regardless of what value I use, it either says 'Px transition to 1200 
> failed' or 'Px transition to 1700 failed.'
> 
> Here's more info from various sysctl's:
> 
> # sysctl hw.acpi.cpu
> hw.acpi.cpu.cx_supported: C1/0 C2/50
> hw.acpi.cpu.cx_lowest: C2
> hw.acpi.cpu.cx_usage: 0.00% 100.00%
> 
> # sysctl dev.cpu
> dev.cpu.0.%desc: ACPI CPU (2 Cx states)
> dev.cpu.0.%driver: cpu
> dev.cpu.0.%location: handle=\_PR_.CPU0
> dev.cpu.0.%pnpinfo: _HID=none _UID=0
> dev.cpu.0.%parent: acpi0
> dev.cpu.0.freq: 1700
> dev.cpu.0.freq_levels: 1700/0 1487/0 1275/0 1200/0 1062/0 900/0 850/0 
> 750/0 637/0 600/0 450/0 425/0 300/0 212/0 150/0
> 
> If I remember correctly the old interface said something about 8 
> throttling states ranging from 12.X% to 100%, but I seem to have many 
> more freq_levels now?

Is this a -current as of today?  If not, please cvsup and test again.

-- 
Nate



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