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. 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 slightly modified version of flamegraph.pl from Brendan Gregg's FlameGraph repo).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" flamegraph SVG images. However, unlike typical flamegraphs (which are 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. USING TIMEP USAGE: . /path/to/timep.bash; timep [-s|-f|-c] [-k] [-t] [-o <type>] [--flame] [--] << SCRIPT/FUNCTION TO PROFILE >> In other words, source timep.bash and then simply add timep before the function/script/commands you want to profile! anything passed to timep's stdin will automatically be redi\rected to the stdin of whatever is being profiled. OUTPUTS: in total, timep generates either 4 or 6 outputs: 2 time profiles, 2 stack trace lists for generating flamegraphs, and (if --flame is given): 2 flamegraph .svg images) These outputs are always saved to disk in the "profiles" directory in the timep tmpdir (by default: /dev/shm/.timep/timep-XXXXXXXX). Upon finishing, timep will create a symlink in your PWD at ./timep.profiles that links to the "profiles" dir that contains all the timep outputs. DETAILS ON OUTPUTS: 2 are time profiles: "out.profile.full" and...