django+nginx. Child processes do not die. How to decide?

Question

Django

Good day!
Noticed this problem:
Child wusgi processes don't always die. Sometimes they freeze, as a result of which the load on the server increases.
Django site, nginx server.
OS CentOS
ps:
What configs are needed to diagnose the problem?

Answer 1

# kill after 5k requests
max-requests=5000
# kill if running more than 54 sec
harakiri=54