![]() Using the Instruments Time Profiler on the application under both OSes, we are seeing a large part of this is due to more time being spent down in the OS in the sched_yield call, which is being called from the tbb code. ![]() In our app testing, we are seeing 25-50% more CPU utilization under OS X 10.9 than under OS X 10.8.5, which under heavy load is causing our app to fail due to missed time-based events.
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