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32 lines
1.0 KiB
32 lines
1.0 KiB
11 years ago
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// ----------------------------------------------------------------------------
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/**
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* A simple class to see what the Java system timer resolution is on your
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* system.
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*
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* @author (C) <a href="mailto:vroubtsov@illinoisalumni.org">Vlad Roubtsov</a>, 2002
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*/
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public class SystemTimerResolution
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{
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// public: ................................................................
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public static void main (final String [] args)
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{
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// JIT/hotspot warmup:
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for (int r = 0; r < 3000; ++ r) System.currentTimeMillis ();
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long time = System.currentTimeMillis (), time_prev = time;
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for (int i = 0; i < 5; ++ i)
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{
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// busy wait until system time changes:
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while (time == time_prev)
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time = System.currentTimeMillis ();
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System.out.println ("delta = " + (time - time_prev) + " ms");
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time_prev = time;
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}
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}
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} // end of class
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// ----------------------------------------------------------------------------
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