What about the thermal CPU speed boost throttling in modern multi-core CPUs?

Modern CPUs now have variable Boost speeds that allow heavily loaded cores to run faster as long as they keep within thermal limits.

So in theory a DOTS based system using all the cores evenly could run slower than a DOTS or non DOTS game that uses fewer cores but more heavily. As each core would be adding to the thermal envelope of the CPU and therefore it would keep the cores Boost speed lower than fewer cores working at a higher rate with other cores idling.

Has anyone done any tests on a multi-core system to see what impact using less cores working harder can have VS more cores working easier on actual performance?

Would there be any way that developers or Unity could dynamically change DOTS workloads based on thermals and Boost behaviour of CPUs?

Side Note: Could loading the edge cores and idling central cores provide more performance and is there any way to know the physical location of a CPU core?

 

Bring some data please to discussion.
Run some tests and try to measure performance degradation over the time.

 

One more abstract thread from Arowx...

 

These threads shouldn't be allowed outside of general discussion...

 

I enjoy the different perspective Arowx posts brings.

 

So I could provide an end-all-be-all answer based on a massive logical oversight in the proposed question, but it is Friday and jumping on the bandwagon seems more fun. So instead, I am going to put my answer behind a codewall.

What's a codewall?

It's like a paywall, except instead of giving me money, you post original DOTS code here on the forums.

In all seriousness, this thread really has nothing to do with DOTS other than mentioning it. There is no mention by name of any of the specific DOTS pieces that would apply. But I will honor my codewall if someone were to actually comply!

 

I have personally experienced thermal cpu throttling testing my own game. 3.2ghz machine dropped to 800mhz according to cpuz. Gpu is at 100pc. This is on a laptop. I don't use dots so essentially one core is saturated of four. I suspect that a more balanced load across the cores would improve thermal performance as i regularly run compute tasks with all four cores without this issue.