Intel® oneAPI Threading Building Blocks
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Meaning of "TBB Dispatch Loop" in VTune?

AJ13
New Contributor I
‎10-01-2012 09:23 AM
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Hi everyone,

I am currently tuning an application with VTune.  What exactly does it mean if a program spends considerable time in "TBB Dispatch Loop"?  I assume this is overhead introduced by the scheduler spawning tasks?

Thanks.

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Anton_M_Intel
Employee
‎10-10-2012 07:38 AM
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*wait_for_all methods are replaced in VTune by TBB Dispatch Loop. I doubt it is the top of the stack for a hot-spot you see. There should be either a parallel algorithm (with your functor) or receive_or_steal_task(). If you want more advice, please post here a snapshot of the stack where you see it.
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