Guidelines for interpreting fuzzer statistics

[pitrou]

Hello,

I'm looking at the fuzzer statistics for the various fuzz targets on our project (Arrow) and a few things seem to stick out:

1. avg_exec_per_s is less than 200/s on one of our fuzz targets
2. fuzzing_time_percent is sometimes 30%, which sounds low
3. oom_percent is between 40 and 60% on most of our fuzz targets
4. avg_unwanted_log_lines is in the hundreds for all fuzz targets: what are "unwanted" log lines in this context? should I do anything about this?

It sounds like some things might need to be improved in how our fuzz targets are configured, but I'm not sure what. Would someone like to share their thoughts?

Thanks in advance.

[pitrou]

@DavidKorczynski I hope you don't mind me tagging you, but you seemed interesting in fuzzing Arrow.