sample_load is an extremely flexible load logger. Not only when and how samples of the load are logged but also the output format is configurable. It can also log the memory-in-use (physical/swap). It uses a buffer (of configurable size) to temporarily store samples minimizing the overhead of writing to a file. Additionally, it can log the process process (PID, cmdline, CPU usage percentage) which has used the most CPU time in the last interval.
