Open Bug 1741743 Opened 3 years ago Updated 2 months ago

Investigate Windows CPU utilization in idle threads: Do we get zeroes, and if not, can it be improved?

Categories

(Core :: Gecko Profiler, task, P3)

Product:
Core
Component:
Gecko Profiler
Platform:
Unspecified
Windows
Type:
task

Tracking

()

People

(Reporter: mozbugz, Unassigned)

References

Details

Bug 1736616 improved the CPU utilization results, by effectively subtracting the CPU activity that may happen when sampling a thread.

On Windows, some testing indicated that we still got mostly/always non-zero values, and the current test reflects that.

Actual profiles may indicate that we really get lots of zero values.

So more testing is needed to investigate whether we get zero values to our satisfaction.

  • If no, what else could be done to remove/lower/ignore the unexpected non-zero values?
  • If yes, then the test may need to be updated to verify that we do get zeroes when sampling idle threads.
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