Problem with 100% CPU and fan running

Problem with 100% CPU and fan running

[nickfox]

I'm running a demo I found on sourceforge:

http://vrp.sourceforge.net/

and when I first start up the demo, the fan on my XP service pack 3 machine
starts running. When I run the app, the CPU pegs to 100%. The demo is using
pthreads.

Is there a way to keep this from happening?

thanks
Nick
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Re: Problem with 100% CPU and fan running

[Ross Johnson]

Hello Nick,

Any reason to suspect the pthreads-win32 library especially? Generally 
it's designed not to cause continuous CPU load (with one exception on 
SMP machines being pthread_spin_lock, but which is intended only for 
very short duration locks).

Have you reported this to the VRP developers?

Regards.
Ross

nickfox wrote:
> I'm running a demo I found on sourceforge:
>
> http://vrp.sourceforge.net/
>
> and when I first start up the demo, the fan on my XP service pack 3 machine
> starts running. When I run the app, the CPU pegs to 100%. The demo is using
> pthreads.
>
> Is there a way to keep this from happening?
>
> thanks
> Nick
>   

Re: Problem with 100% CPU and fan running

[nickfox]

Hi Ross

Thanks for responding. I do have a dual core AMD processor. And as far as
suspecting pthreads, it was just my first guess. I don't think there is
anything wrong with pthreads. I think it's maybe the program logic and how
the threading is being used. I honestly don't know. As you probably have
figured out, my knowledge of threading is not that strong. 

I'm not sure how to isolate the problem. Do you have any suggestions?

thanks
Nick


Ross Johnson-2 wrote:
> 
> Hello Nick,
> 
> Any reason to suspect the pthreads-win32 library especially? Generally 
> it's designed not to cause continuous CPU load (with one exception on 
> SMP machines being pthread_spin_lock, but which is intended only for 
> very short duration locks).
> 
> Have you reported this to the VRP developers?
> 
> Regards.
> Ross
> 
> nickfox wrote:
>> I'm running a demo I found on sourceforge:
>>
>> http://vrp.sourceforge.net/
>>
>> and when I first start up the demo, the fan on my XP service pack 3
>> machine
>> starts running. When I run the app, the CPU pegs to 100%. The demo is
>> using
>> pthreads.
>>
>> Is there a way to keep this from happening?
>>
>> thanks
>> Nick
>>   
> 
> 
> 

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