Jerry's CPU performance test [chapter]

Dhrystone Its importance is that it can be used as an indicator of the integer computing performance of the processor ;

DMIPS： Dhrystone MIPS, Not literally millions of instructions per second . It's a measurement CPU Run a program called Dhrystone( Integer operation ) A unit of relative performance when testing a program ( On many occasions, people are also used to MIPS As the unit of this performance index );

Dhrystone： Is in the 1984 Year by year Reinhold P. Weicker Designed a comprehensive benchmark program , This program is used to test CPU( Integers ) Computing performance . Its name is “Dhrystone” Is with another algorithm “Whetsone” Distinguished and designed names . And Whetsone Different ,Dhrystone Floating point operations are not included , The output is running every second Dhrystone The number of times , That is, the number of iterations of the main loop per second ;

dhrystone Measure the computing power of the processor ;

Linpack Test the floating-point performance of the system ;

pi_css5_src test CPU The floating-point computing power of , test CPU The time required to calculate the Pi of a specific digit ;

whetstone Test the efficiency and speed of floating-point operation ;