Process Scheduling Evaluations using Multithreaded Software Modules

This paper describes the development and use of recursively generated multithreaded process modules for process scheduling evaluation purposes. For this purpose specific executable modules were developed emulating in this way different computation-intensive workloads in Linux operating system and virtual environments such as User Mode Linux. An extensive number of iterative simulation tests have been conducted in order to obtain and analyze a satisfactory quantity of processes and threads executions time and resource usage estimations. The outcomes of the simulations have reconfirmed that modifications on process scheduling algorithm (e.g., modification of quantum size) can easily affect the overall task execution performance (e.g., execution time, resource usage, etc.). Moreover, the concurrent multiprocessing and multithreading generation procedure followed proved to be an interesting combinatorial technique and tool for testing that system performance.