Le 2021-01-14 à 02:48, Thomas de Groot a écrit :
> Op 13/01/2021 om 20:46 schreef Mike Horvath:
>> Yeah, my old PC was always pegged at 100% CPU on all 4 cores.
>>
>> This is frustrating because the whole reason I got such a powerful CPU 
>> was so that I could do more raytracing. Otherwise, I don't need such a 
>> good CPU.
>>
>> :(
>>
> 
> 
> For a render, I typically set +WT at 'maximum logical processors minus 
> 2'. As I have here 6 cores and thus 12 logical processors, I set +WT10. 
> Thus I am always able to do something else besides the render.
> 
> Possibly, your WT is set low by default. Changing WT and watching the 
> Task Manager you will see CPU utilisation change. I noticed that when 
> CPU utilisation gets close to 90+% no render time is really gained, so 
> it seems always better to set a lower WT to keep it under the 100%
> 

Leaving the rendering priority to normal and using all logical cores all 
the time and I experience no slowing down for the other processes.
IF I set the rendering priority to high, then I do need to reserve at 
least one core for other tasks.

The normal priority set the rendering effective priority to «lower than 
normal» while the high priority do set the effective priority to high.

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