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When I trace a Java synchronized method, does the method time include lock delay time?

April 26, 2017delay Java lock method synchronized time trace

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When I trace a Java synchronized method, does the method time include lock delay time?

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The JVM implements the synchronization on the calling side rather than on the callee side. Once you are inside the method’s code, the lock has already been grabbed. This means that the time you see is after the synchronization.