Unity Jobs and BURST low performance on Html5

Questions & Answers
1

Hi.
I am trying a simple job to measure how big of a performance improvement I get.
This is the related code:

[BurstCompile]
struct HardJob : IJob
{
    public void Execute()
    {
        for (int i = 0; i < 10000; i++)
        {
            float result = Mathf.Exp(Mathf.Sqrt(i));
        }
    }
}

And then I just call it via:

            NativeArray<JobHandle> arr = new NativeArray<JobHandle>(10000, Allocator.TempJob);
            for (int i = 0; i < 10000; i++)
            {
                arr *= new HardJob().Schedule();*

}
JobHandle.CompleteAll(arr);
arr.Dispose();
Performance results in the editor are AMAZING:
- Without jobs: 160ms per excecution.
- With Jobs: 16ms per excecution.
- With BURST ™️ jobs: 0.16 ms per execution!
----------
Aaaand then I tried HTML5
- Without jobs: 180ms
- With jobs 190 ms
- With BURST ™️ : 195ms
----------
Why is my HTML5 performance WORSE when using jobs? Did I forget to enable something in the build settings?

2

have you enabled the burst compilation? from Job>Burst>Enable Compilation