Evaluation of CPU performance

People often use benchmark to measure CPU performance, and common benchmark are dhrystone and Coremark. Because the dhrystone is greatly affected by the compiler, so, the results are not very accurate, and now most of the use of Coremark, but dhrystone the oldest performance evaluation method because of the familiar, so still be preserved. and mobile phone processor common running sub-software has an Ann Rabbit, 360 run division Wang and so on.

Typically, the most time-consuming instruction in CPU processing is store and load, which means that today's computer performance bottlenecks are in the CPU-to-memory interaction.

Problem:

1 What is benchmark?

2 What is Dhrystone?

Evaluation of CPU performance