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Hi,
We found the following document on Cortex-A9 performance.
List of ARM microarchitectures - Wikipedia, the free encyclopedia
Which claims 2.5 DMIPS/MHz per core for Cortex-A9 2GHz@2 core. However, our Dhrystone result on Cortex-A9 1.2GHz@2 core only showed roughly 1 DMIPS/MHz per core.
We downloaded the Dhrystone benchmark from the following link and cross-compiled it with gcc version 4.5.2.
dhrystone 2.1 - Download, Browsing & More | Fossies Archive
We realize that Dhrystone measurements will vary due to differences in compilers and OS. And I would like to know whether our result is reasonable or not?
Best,
Ying
Hi Winand
you are going in wrong direction about DMIPS per MHZ, the calculation that you have done is at mistake. 2.5 DMIPS/MHz is independent of your frequency now. still you now have 800 MHz but it does not mean that 2.5DMIPS/MHz will chnage to 1.66DMIPS/MHZ.
it is fixed . either it is 1200 MHZ, 2GHZor 800 MHz