How to use Python profile to troubleshoot WSGI performance issues?

Solution Verified - Updated -

Issue

  • Strange glitches during authentication.
  • Need to understand what filter in public_api pipeline causes bad performance.

NOTE. This article is focused on OpenStack Keystone, but slight modifications will make it applicable to any other service.

Environment

  • Red Hat OpenStack Platform 13
  • Red Hat OpenStack Platform 12
  • Red Hat OpenStack Platform 10
  • Red Hat OpenStack Platform 9
  • Red Hat OpenStack Platform 8

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