Measuring compiler performance

[slaviuspan]

Posted on October 04, 2016 at 13:57

Hello. Can you help me to measure perfomance of 3 compilers; Keil, IAR and SW4STM32. For example, using the Dhrystone or other benchmark. I use STM32F4-DISCOVERY with stm32f407vg. 

P.S.I'm a newbie) Sorre for my English. #!stm32f4-!stm32f407vg

[Tesla DeLorean]

Posted on October 04, 2016 at 18:16

Ok, so can you configure a TIM and observe the count across the code you want to benchmark, or use the DWT_CYCCNT to count processor cycles?

[slaviuspan]

Posted on October 05, 2016 at 13:22

I have a Dhrystone benchmark projecy for8 But I don't understand how it works. I need something similar for STM32F407VG

________________ Attachments : DHRY.rar : https://st--c.eu10.content.force.com/sfc/dist/version/download/?oid=00Db0000000YtG6&ids=0680X000006HtmB&d=%2Fa%2F0X0000000aWl%2FktlZJ.aDH_vVOzc5LMCXVreYMfZIYEhM9Z_pf8s4Ct8&asPdf=false

[Tesla DeLorean]

Posted on October 05, 2016 at 22:32

But I don't understand how it works.

That would seem to devalue the usefulness of doing the test rather a lot...

http://infocenter.arm.com/help/topic/com.arm.doc.dai0273a/DAI0273A_dhrystone_benchmarking.pdf

[Tesla DeLorean]

Posted on October 20, 2016 at 20:18

Keil, Level 3, Optimize for Time

STM32F4-DISCO Running at 192 MHz,Microseconds for one run through Dhrystone:    2.8 Dhrystones per Second:                      357995.2 STM32F4-DISCO Running at 168 MHz,Microseconds for one run through Dhrystone:    3.2 Dhrystones per Second:                      313479.6