Re: [loongson-dev] Re: a pre-release of merging loongson patchs to linux-2.6.29.1

[胡洪兵 <huhb@lemote.com>]

Erwan Lerale 写道:
> Erwan Lerale a écrit :
>
>> Now, let's talk about the cpufreq stuff :)
>>
>> cpufrequtils 005: cpufreq-info (C) Dominik Brodowski 2004-2006
>> Report errors and bugs to cpufreq@vger.kernel.org, please.
>> analyzing CPU 0:
>>  driver: loongson2f
>>  CPUs which need to switch frequency at the same time: 0
>>  hardware limits: 199 MHz - 797 MHz
>>  available frequency steps: 199 MHz, 299 MHz, 398 MHz, 498 MHz, 598 
>> MHz, 697 MHz, 797 MHz
>>  available cpufreq governors: conservative, ondemand, userspace, 
>> powersave, performance
>>  current policy: frequency should be within 199 MHz and 797 MHz.
>>                  The governor "ondemand" may decide which speed to use
>>                  within this range.
>>  current CPU frequency is 797 MHz (asserted by call to hardware).
>>  cpufreq stats: 199 MHz:0.00%, 299 MHz:0.00%, 398 MHz:0.00%, 498 
>> MHz:0.00%, 598 MHz:0.00%, 697 MHz:0.00%, 797 MHz:100.00%
>>
>> It seems to be working but it's weird. When I start X and gnome 
>> (cpufreq applet). I can see
>> that's the system is using the ondemand performance but is stuck at 
>> 797 Mhz if I don't do anything.
>> If i start working (yeah it's happening sometimes), the frequency is 
>> moving from 199Mhz to 797Mhz.
>>
>> The other thing which is weird is that I don't have this problem with 
>> the Loonux stock kernel.
>
> Hello,
>
> I've switched from the ondemand governor to the conservative one and 
> it seems
> to be working properly.
>
Yes, the conservative governor  is better than the ondemand.
> I have also noticed that the fans seems to be running at full speed 
> all the time.
> Any comment, on this issue ?
>
we test that it only  save  power  about  1~2w   when the cpufreq  is  min.
So the temperature will be reduced a little.
when the temp is the some section,
eg. the  60°C and 65°C  are the same section when the section is 60°C~70°C，
the speed of  fans will be the same.

> Is there a way to query the sensors ?
Please insmod  ec_ftd which is one of the ec modules.
And then type  "cat  /proc/ft" ,  the output: "1.31 0x01 4705 0x00 56"

the 4705 means  the speed of fans,   56 stands for  the  temperature

the ec_modules  source  URL:
http://dev.lemote.com/code/ec_module

git URL:
git://dev.lemote.com/ec_module.git
> Cheers
> r1
>
>
>
>


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