SystemTap
SystemTap is a dynamic tracing tool for Linux systems that allows developers and system administrators to monitor and analyze the behavior of running software in real-time. It provides a scripting language to define probes that collect data from kernel and user-space applications, enabling deep performance analysis, debugging, and troubleshooting without modifying source code or restarting processes.
Developers should learn SystemTap for low-level performance profiling, debugging complex system issues, and understanding kernel and application interactions in production environments. It is particularly useful for diagnosing latency problems, memory leaks, or I/O bottlenecks in Linux servers, embedded systems, or high-performance computing clusters where traditional logging is insufficient.