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django-q-mt

Multi-threaded django-q2 worker.

Install

pip install django-q-mt

Usage

Add django_q_mt to INSTALLED_APPS.

./manage.py django_q_mt

Supports standard django-q2 configuration like Q_CLUSTER, workers, timeout.

Limitations

recycle isn't supported at the moment. If memory leaks are a concern, you can use MemoryMax= in systemd or an equivalent.

Timeouts

Timeout handling is more finicky and unreliable in multi-threaded setups. django-q-mt forces timeouts in the following stages:

  • A TimeoutError is injected with PyThreadState_SetAsyncExc. The thread must run the Python interpreter in order for this to work.

  • If the thread is still alive after 30 seconds, django-q-mt uses ptrace to force-stop a blocking syscall, eg. an infinite read from a socket.

  • If it fails, after 30 second the entire process with all threads is recycled. It should be a rare case, as at this point the timing out thread is either running a tight C loop or is deadlocked.

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