What is pperf? Very little data is collected...

[wvxvw]

OK, first, there's a problem in this code:

    if sys.version_info >= (3, 0):
        if file_name is None:
            file_name = b'out.prof'
        status = libprofiler.ProfilerStart(bytes(file_name, 'ASCII'))

b'out.prof' should be 'out.prof' (not an asci string). Converting an asci string in this way will result in an error.

Second: what is pperf? I couldn't find such program in gperftools package (Arch name for Debian google-perftools). There's only pprof.

This aside, when I try running yep.start() ... yep.stop() very little information is collected. When I then try:

pprof $(which python) ./out.pprof

It does enter interactive mode, but doing top100 gives just 10 records, which are selected kind of at random...