erlang_pmp

Poor Man's Profiler inspired Erlang profiler.

Running

erlang_pmp:profile(Opts).

Opts

• duration: duration the profiling will run for, in seconds (default: 60).
• processes: list of PIDs that will be profiled, or all to use erlang:processes() before taking each sample (default: all).
• sleep: sleep duration in milliseconds between taking samples (default: 10).
• show_pid: if true, PID (or process name if registered) will be prepended to the stack trace (default: false).
• filename: path under which the profiling results will be saved (default: /tmp/erlang_pmp.trace).
• include_statuses: a list of process statuses as returned from erlang:process_info(Pid, status). A stack trace will only be counted if the process status belongs to the list, or if include_statuses is all (default: all).
• show_status: if true, status of the process will be appended to the stack trace (default: false)

Output

The output of erlang_pmp is meant to be used with FlameGraph stack trace visualizer:

git clone https://github.com/brendangregg/FlameGraph.git
FlameGraph/flamegraph.pl /tmp/erlang_pmp.trace > /tmp/erlang_pmp.svg