Are celery tasks hanging?

Question

Python

The parser is spinning on the server
Each url is parsed as a separate task in celery
Runs like this -c 8 maxtasksperchild 20
And the whole thing often just hangs dead
Tried to set a time limit for the execution of one task, but did not snatch the limit
How can I identify the problem?
In fact, when the messages hang in the work, nothing works, the logs of information almost do not give, if you bang the supervisor with celery, then hung workers may remain in the processes