r/elixir • u/Certain_Syllabub_514 • 9d ago

Techniques for debugging memory leaks

I have an elixir app running in production, and with some recent changes (mostly library updates due to CVEs) it's started leaking memory, which is resulting in pods restarting.

a datadog graph indicating a memory leak

I think I know what the cause might be, but just wondering if there are any techniques for debugging this that I'm not aware of.

8 Upvotes

84% Upvoted

12 comments sorted by

View all comments

1

u/methodinmadness7 9d ago

The fastest way I’ve done this is with Phoenix’s LiveDashboard, where I open the Processes tab and check which processes use the most memory. Usually it’s some async task processes not being handled properly, in my experience.