Having a single thread pool could cause significant lock contention.

使用单独一个线程池可能会导致严重的锁争用。

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The first lane is Time, indicating when this lock contention occurs.

第一列是时间，表明什么时候锁出现了竞争。

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The result can help users find out the JUC lock contention bottleneck in the program.

这些结果有助于用户发现JUC锁竞争造成的程序瓶颈。

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