This document summarizes the steps taken to install and configure MySQL 5.1.50 and MySQL 5.5.8 on the same machine for performance testing purposes. It describes preparing the testing environment, installing each MySQL version, and configuring various parameters like the InnoDB storage engine settings. Tests were run using Sysbench to compare the performance of each version for operations like inserting 1 million records with and without concurrency. The results are presented in tables showing the time taken for each operation on each MySQL configuration.