System administration is a complex field to manage and maintain. The system requiresknowledge of operating systems and applications, as well as hardware and softwaretroubleshooting. The state of the system is being monitored and important informationis logged. Measured data is used to analyze the performance and to find out if the systemmeets the requirements. Among their selective tools, there is no one specificallymade for analyze and report writing purpose. This master thesis designs and developsan analysis framework for performance data. It offers some visualization and statisticaltechniques through a graphical interface, in order to help the user through analysisand report writing. This approach is trying to demonstrate abilities from other graphand statistical tools done in a simpler way, and is considered a useful contribution forsystem administrators.