Priority doesn't seem to behave as expected

[George3d6]

Issues

Note -- I'm running Django-dramatiq

I need to use dramatiq to execute higher-priority tasks before lower-priority tasks, and I have a fairly long queue of tasks (maybe a few thousand running on only a 6 to 8 workers). However, I have very few high-priority tasks, and I'd expect those to always be executed first. But, the behavior I observe is that dramatiq will keep choosing to run enqueued actors with lower priorities (sometimes).

As far as I understood from reading a bunch of issues what I'd actually need here is "queue priority" or some such, which is only supported by RabbitMQ. But I'd be nice to double-check and see I'm not doing something wrong, and also, if priority is indeed limited to a specific situation (e.g. priority of resource allocation to already running tasks) I'd be nice if the documentation was more specific about this.

Checklist

• Does your title concisely summarize the problem?
• Did you include a minimal, reproducible example?
• What OS are you using?
• What version of Dramatiq are you using?
• What did you do?
• What did you expect would happen?
• What happened?

What OS are you using?

Ubuntu 22.04 LTS

What version of Dramatiq are you using?

1.13.0

What did you do?

I need to use dramatiq to execute higher-priority tasks before lower-priority tasks, and I have a fairly long queue of tasks (maybe a few thousand running on only a 6 to 8 workers). However, I only enqueued a few high-priority tasks

What did you expect would happen?

I have very few high-priority tasks, and I'd expect those to always be executed first.

What happened?

The behavior I observe is that dramatiq will keep choosing to run enqueued actors with lower priorities (sometimes).