Measuring OS Performance: System Calls and Context Switches

Are you curious about why some programs run slower than others, even on powerful hardware? The hidden costs within an operating system, particularly those of system calls and context switches, often hold the key to understanding application performance. This course equips you with the foundational knowledge and practical skills to unveil these hidden costs. By reading through clear explanations and hands-on exercises, you will learn to accurately measure and interpret the performance overhead introduced by fundamental operating system operations, transforming your understanding of system efficiency. What you'll learn: * Understand the fundamental role of system calls and context switches in operating systems. * Learn various timing mechanisms and their accuracy for micro-benchmarking. * Apply practical techniques to measure the performance cost of system calls. * Analyze the overhead associated with context switching between processes and threads. * Design and execute experiments to benchmark low-level operating system performance. * Interpret measurement results to identify potential performance bottlenecks. * Understand the challenges of accurate performance measurement in modern multi-core environments. Beginning with core concepts and definitions, the course progresses through practical measurement techniques, data analysis, and experimental design. You will gain a solid understanding of how operating system internals affect performance. This course is for beginners interested in operating systems, system programming, or performance analysis. No prior experience with performance measurement is required. Start your journey into practical operating system performance analysis today.