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  1. JDK
  2. JDK-8214180

Need better granularity for sleeping

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        naked_short_sleep is to coarse grained on contemporary hardware/os:es.
        1 ms as minimum when we can complete an entire safe-point in 0.5 ms is a very long time.
        Sleeping a very short time instead yielding have several uses-cases.

        I will first add it SpinYield to get much smother back-off delay curve.

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                rehn Robbin Ehn
                rehn Robbin Ehn
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