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[Stuart Grace <1777486@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

OpenStack Queens release.

With developer panel and profiler enabled, you can select "Profile
Current Page" to create a new profiler trace. That initializes a
profiler instance here:

https://github.com/openstack/horizon/blob/master/openstack_dashboard/contrib/developer/profiler/middleware.py#L64

That instance is never deleted. The next time you select "Profile
Current Page", the test here finds the previous instance and returns it,
instead of creating a new instance:

https://github.com/openstack/osprofiler/blob/master/osprofiler/profiler.py#L59

So the previous base_id is reused for the new trace.  When the trace
details are retrieved from the profiler database by searching for the
base_id, events from both first and second traces are returned.

** Affects: horizon
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1777486

Title:
  Multiple profiler traces get same base_id

Status in OpenStack Dashboard (Horizon):
  New

Bug description:
  OpenStack Queens release.

  With developer panel and profiler enabled, you can select "Profile
  Current Page" to create a new profiler trace. That initializes a
  profiler instance here:

  https://github.com/openstack/horizon/blob/master/openstack_dashboard/contrib/developer/profiler/middleware.py#L64

  That instance is never deleted. The next time you select "Profile
  Current Page", the test here finds the previous instance and returns
  it, instead of creating a new instance:

  https://github.com/openstack/osprofiler/blob/master/osprofiler/profiler.py#L59

  So the previous base_id is reused for the new trace.  When the trace
  details are retrieved from the profiler database by searching for the
  base_id, events from both first and second traces are returned.

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