CODEWITHSUNDEEP
pythondebuggingcrashmultiprocessingdaemon
maambmb
maambmb

Reputation: 951

How to debug silent crashes? Multiprocessing python

I have a program that spawns a bunch of worker daemons using the multiprocessing library.

Sometimes these daemons will sporadically fall over and die. This isn't caused by a python-level Exception. The crashes seem to be totally silent...

Can anyone provide tips on how I may go about debugging this issue?

Upvotes: 3

Views: 1287

Answers (1)

Szymon Zmilczak
Szymon Zmilczak

Reputation: 383

The faulthandler library might help debug such behavior. Run this code in every process run method to save tracebacks into separate files:

f = open('fault_%s.log' % multiprocessing.current_process().name, 'w')
faulthandler.enable(file=f, all_threads=True)

Upvotes: 2

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