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Diagnosing bugs in production with Elixir

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Avatar for Daniel Daniel
August 06, 2021
Programming
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Diagnosing bugs in production with Elixir

In this talk some useful tools to debug applications written in Elixir in production are shown, specially for memory leak and tracing cases, exemplified via a simple GenServer, that is myself.

Avatar for Daniel

Daniel

August 06, 2021
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Transcript

  1. Diagnosing bugs in production with Elixir

  2. Who am I?

  3. None

  4. /danielpilon /daniel-pilon /daniel_pilon

  5. I don't like to have bugs...

  6. ...but I love to solve them!

  7. It's a great opportunity to learn

  8. "If I don't use it, I lose it"

  9. Enjoy your bugs!

  10. Yet another memory leak story

  11. None

  12. So, where do we start?

  13. None

  14. Mix, Distillery and Elixir releases

  15. None

  16. Going roots: :sys, :erlang and :dbg modules

  17. None
  18. None
  19. None
  20. None
  21. None
  22. None
  23. None
  24. None

  25. The Observer UI

  26. None
  27. None

  28. iex> :observer.start

  29. None

  30. The Observer CLI

  31. None

  32. iex> :observer_cli.start

  33. None

  34. Recon

  35. None
  36. None
  37. None
  38. None
  39. None
  40. None
  41. None
  42. None
  43. None

  44. Rexbug

  45. None

  46. Wrapping up...

  47. Fulfill your toolbox!

  48. Explore! (ExProf, fprof, eflame etc)

  49. Enjoy your bugs!

  50. Thank you!