OSProfiler provides a tiny but powerful library that is used by most (soon to be all) OpenStack projects and their python clients. It provides functionality to be able to generate 1 trace per request, that goes through all involved services. This trace can then be extracted and used to build a tree of calls which can be quite handy for a variety of reasons (for example in isolating cross-project performance issues).

• Free software: Apache license
• Documentation: https://docs.openstack.org/osprofiler/latest/
• Source: https://git.openstack.org/cgit/openstack/osprofiler
• Bugs: https://bugs.launchpad.net/osprofiler
• Release notes: https://docs.openstack.org/releasenotes/osprofiler

• Disable sqlalchemy tracing
• Added --since to osprofiler list
• Added tracepoint_id to spans. Only works fully for redis backend.
  • For normal traces, location of function and full function name with class etc.
  • For web calls, path that is called and request type
• Disabled loginsight backend
• Added sampling rate
• Global variables at osprofiler/profiler.py
  • CREATE_MANIFEST: create a file for each tracepoint encountered
  • TRACE_NEWTHREAD: trace thread creation events
  • SKELETON_ONLY: only collect thread creation events
• Added profiler.annotate to add annotations to traces
• Added ability to enable/disable tracepoints. Works by reading manifest files at each tracepoint
• Fixed metaclass/builtin method tracing. These traces work correctly now. Can turn into a pull request to upstream.

• Clone the repo
• sudo pip install -r requirements.txt --no-deps --force-reinstall -U
• sudo pip install --no-deps --force-reinstall -U .
• sudo systemctl restart devstack@*