Performance Analysis of ARM Cores and Use of Cortex-M3 for Realisation of IoT Application

Abstract

As x86-64 processors have already became the most chosen CPU for the personal computers or desktops, it leads us to understand the performance impact of migrat- ing to 64-bit environment from 32-bit environment in cases of mobile and portable devices. The applications that can explore large memory address space always get benefit from 64-bit environment in terms of performance. But still for the applica- tions which does not require such large memory space and are able to fit into 32-bit environment, it is interesting to know the effect on the overall performance, if it can get improvement or not when shifted to 64-bit environment platform. In this report, the description regarding various performance metrics for benchmarks compiled for 32-bit platform and 64-bit platform that run on the same platform having ARM v8-A architecture based system is given. In case of IoT devices, the higher speed of execution and low power consumption is always desirable. Here, we use two versions of cortex-M3 micro-controllers running on 200 MHz and 300 MHz to realize a serial to wi-fi converter IoT application and see how the performance is bene ted by the use of 300 MHz cortex-M3 micro-controller in terms of power consumption. The serial to wi-fi converter IoT application is brought up on 300 MHz chip and its performance is validated for various test sce- narios which can check the functionality of serial to wi-fi converter IoT application.