What profilers and analyzers are there for Erlang/OTP?

Question

Are there any good code profilers/analyzers for Erlang? I need something that can build a call graph (eg gprof) for my code.

Answer 1

For static code analysis you have Xref and Dialyzer, for profiling you can use cprof, fprof or eprof, reference here.

Answer 2

The 'fprof' module includes profiling features. From the fprof module documentation:

fprof:apply(foo, create_file_slow, [junk, 1024]).
fprof:profile().
fprof:analyse().

fprof:apply (or trace) runs the function, profile converts the trace file into something useful, and analyse prints out the summary. This will give you a list of function calls observed, what called them, and what they called, as well as wall-clock timing info.