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Home/ Questions/Q 3601760
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Editorial Team
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Editorial Team
Asked: May 18, 20262026-05-18T20:39:41+00:00 2026-05-18T20:39:41+00:00

I want to make some tuning for multithreaded program. If I know how much

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I want to make some tuning for multithreaded program.

If I know how much threads can really work in parallel I can make the program much more effective.

Is there a way in Java to get this info?

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  1. Editorial Team
    Editorial Team
    2026-05-18T20:39:42+00:00Added an answer on May 18, 2026 at 8:39 pm

    You can use

    Runtime.getRuntime().availableProcessors()
    

    But its more of a best guess and even mentioned by the API

    This value may change during a particular invocation of the virtual
    machine. Applications that are sensitive to the number of available
    processors should therefore occasionally poll this property and adjust
    their resource usage appropriately.

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