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Question is navmesh pathing using all cores?

Discussion in 'Navigation' started by laurentlavigne, Jan 8, 2021.

  1. laurentlavigne

    laurentlavigne

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    i was wondering, before i jump into optimization, what's the performance profile of navmesh nowadays?
    back in the prehistoric days of 3.x it was single threaded and fast but not that fast.
     
    laurentlavigne, Jan 8, 2021
    #1

  2. adriant

    adriant

    Unity Technologies

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    The pathfinding operations of all agents are executed single-threaded and they are thus able to stay under the limit set with 
    NavMesh.pathfindingIterationsPerFrame
    .

    The simulation of the NavMeshAgent crowd movement is multi-threaded and, if necessary, it will use as many worker threads as there are available. One thread will execute the simulation of a group of agents that are nearby each other.
     
    adriant, Jan 18, 2021
    #2

  3. laurentlavigne

    laurentlavigne

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    Single thread ... not on the main thread I hope, main thread cycles are too precious to waste on non synchronous processes.
     
    laurentlavigne, Jan 18, 2021
    #3

  4. adriant

    adriant

    Unity Technologies

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    The pathfinding code runs on the main thread.
     
    adriant, Jan 20, 2021
    #4

  5. laurentlavigne

    laurentlavigne

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    When is it being moved to jobs? There is no reason to hog the main thread with an async operations.
     
    laurentlavigne, Jan 20, 2021
    #5
    radiantboy and Peter77 like this.

  6. adriant

    adriant

    Unity Technologies

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    It makes sense to try and move it to a worker thread. I've added it to our backlog and we'll need to find a place for it in our plans. When we'll have news I'll share them here.
     
    adriant, Jan 21, 2021
    #6
    laurentlavigne likes this.

  7. laurentlavigne

    laurentlavigne

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    Thanks, we on Switch appreciate.
     
    laurentlavigne, Jan 21, 2021
    #7

  8. radiantboy

    radiantboy

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    Looking forward to this!
     
    radiantboy, Jun 21, 2021
    #8

  9. ParhamXTT

    ParhamXTT

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    Hello. anything changed in 2023.1 alpha 11 about multithreaded navmesh and pathfinding?
     
    ParhamXTT, Oct 1, 2022
    #9
    Claytonious likes this.

  10. jjplay175

    jjplay175

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    Over a year has passed and still no news on fixing Navmesh needlessly being on the main thread? Has it been moved or is it time for us to learn dots 1.0 to do it ourselves?
     
    jjplay175, Nov 20, 2022
    #10
    chaikadev, DwinTeimlon, Peter77 and 1 other person like this.

  11. DwinTeimlon

    DwinTeimlon

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    DwinTeimlon, Nov 21, 2022
    #11

  12. Nikolat93

    Nikolat93

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    Is it possible to force the crowd movement to be single threaded? I'm getting various freezes related to crowd manager multithreaded code.
     

    Attached Files:

    Nikolat93, Oct 16, 2023
    #12