Bjoern Stiel Here it is but I can't reproduce it now... I was also using requests in a different task to pull data from jsonplaceholder. I do see it patched now. Sorry to bother you. Here's the gist: https://gist.github.com/thuibr/1cf030c557e728c07e2b734492c54d6e

Bjoern Stiel I think it's trickier than that. When I print time.sleep in a celery task, I see: [2023-12-15 07:45:10,095: WARNING/MainProcess] <module 'time' (built-in)> When I do gevent.sleep: [2023-12-15 07:47:18,453: WARNING/MainProcess] <function sleep at 0x7fe73c14b2e0> It wouldn't be (built-in) if it's monkey-patched. I do see that time.sleep gets monkey-patched if I run this in the shell though: from gevent import monkey monkey.patch_all() True import time time.sleep <function sleep at 0x7e5d2da2fba0> Celery must not monkey-patch time by default for its gevent pool.

For gevent, wouldn't you want to use gevent.sleep?

Bjoern Stiel Nice. I went looking for a blog post to see how to set it up because the one time I tried I had issues configuring it. Lo and behold, I found yours!

Hi, great post, thanks for sharing! One question though. Isn't the filesystem broker unsupported? It's in Kombu but not in the Celery docs, which I think means it has code but no maintainer and no official support.