Background

The motivation of this is to profile the latency profile of Samsung KVSSD (since currently I am collabrate with Samsung and have access to their latest KVSSD). I did a little bit research on how to add new io-engine to FIO benchmark. From this post, I found it fairly easy to add a new I/O engine. I added a source file in engine folder (reference the mmap.c and sync.c to have a idea of the code).

Linux I/O stack diagram for kernel 4.10. Noted linux introduce block IO multi-queue in kernel 3.17.

To be continued.

Overview

Background