Linux Process Snapper (pSnapper, psn) is part of my open source 0x.tools suite of tools for Linux performance troubleshooting and always-on profiling of production systems. pSnapper is a Linux /proc profiler that works by sampling Linux task states and other metrics from /proc/PID/task/TID pseudofiles. pSnapper is designed to be a low-tech passive profiler, it does not attach to your program to sl