Comparison of embedded Linux filesystems

OData support
Bányász Gábor
Department of Automation and Applied Informatics

Nowadays embedded systems are ubiquitous, and they are used in many

different fields. This can be attributed to the rapid spread and

development of the Internet of Things (IoT), which involves the usage of

embedded devices for measurement and control purposes. These systems

have very limited computational power compared to general purpose

computers, but they are also much cheaper.

Embedded systems need special approach in all phases of design because

the constraints and requirements are different from the usual. This

applies to both hardware and software aspects of data storage devices.

Most of these systems use flash memory with small capacity, which has

different characteristics to hard disk drives. Accordingly, we need to

pay attention to the special requirements (robustness, durability) when

we are choosing between file systems.

In my thesis, I describe the aforementioned requirements, and then

I examine how a few file systems meet these requirements. As part of the

comparison, I measure their performance on a Raspberry Pi. For this

purpose, I demonstrate how one can build and customize a Linux based

operating system using the Yocto Project.


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