Show HN: Timep – A next-gen profiler and flamegraph-generator for bash code

Summary

timep timep is an efficient and state-of-the-art trap-based time profiler for bash code. timep generates a per-command execution time profile for the bash code being profiled. As it generates this profile, timep logs command runtimes+metadata hierarchically based on both function and subshell nesting depth, mapping and recreating the complete full call-stack tree for the bash code being profiled. MAJOR UPDATE RELEASED: The new timep (currently v1.3) now includes the required loadable binary as a compressed base64 encoded string inside timep.bash. timep_flamegraph.pl is also included inside timep.bash, making the script 100% self contained. This version also includes a major refactor of the log merging logic, making it more robust, more reliable, and much faster. THe forkrun test (involving 67000 or so individual commands) previously took 20 m,inutes and now only takes 5 minutes (or 2 minutes if you only want a profile and not a flamegraph). This is between a 4x and 10x speedup! BUILTIN FLAMEGRAPH GENERATOR: One standout feature of timep is that, in addition to the time profile, timep will generate outputs consisting of call-stack traces that can be directly used with timep_flamegraph.pl (in this repo - a modified version of flamegraph.pl from Brendan Gregg's FlameGraph repo with a new --color=timep option for use with timep ). If you pass timep the --flame flag, timep will automatically download (if needed) a copy of flamegraph.pl and use it to generate both "full" and a "folded" flamegraphs SVG images. However, unlike typical flamegraphs (which are built using stack traces), these flamegraphs are built using bash commands and their associated runtimes, and the different levels represent combined function+subshell nesting depth. Additionally, these flamegraphs use a custom 'timep' coloring scheme, which colors based on the time it took the command to run and uses a perceptually and spatially equalized color mapping to produce flamegraphs that are easy to interpret a...