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One performance problem running Ubuntu18.04 on NUC11PAHi5

zzsqwq
Beginner
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I bought two NUC11PAHI5 and installed the Ubuntu18.04 system on it to control our robot as a edge computing device. At the same time, I also have a NUC8I7BEH, and his CPU is i7-8559U. We all know that the CPU of NUC11PAHI5 is i5-1135G7, a 11th generation CPU, and a relatively new style. In various evaluations, his computing power is higher than i7-8559U.

However, in our measured process, I found that the i5-1135G7 is far less than i7-8559U. At the same time, although the i5-1135G7 is a quad-core eight threads and the highest frequency is 4.2GHz, during my test, in Ubuntu18. 04. In the case of full load (at the same time CPU-SCALING is Performance), his main frequency can only reach 3.3 GHz, which cannot be higher. What may be the problem? Is there any way to make i5-1135G7 main frequency higher, or let him have a better performance under Ubuntu 18.04?

 

i5-1135G7 CPU frequencyi5-1135G7 CPU frequency

Above is CPU i5-1135G7 frequency

i5-1135G7 CPU运行此任务i5-1135G7 CPU运行此任务

Above is CPU i5-1135G7 occupation

 

i7-8559U occupationi7-8559U occupation

Above is CPU i7-8559U occupation

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