For load testing, the CPU sampling profiling mode has very low overhead.

对于负载测试，CPU采样分析模式的开销非常小。

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This mode allows the application to run normally, but produces no profiling data until a client attaches to the agent to give it instructions.

这种模式允许应用程序正常运行，但不生成分析数据，直到客户机连接到代理并向其发布指令。

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That is, when the profiling agent is launched in controlled mode, it appears to hang the JVM until asked to start monitoring and it produces only XML fragments instead of a complete XML document.

这意味着，当剖析代理以controlled模式启动时，它似乎挂起JVM，直到被指示启动监控；它只生成xml碎片，而不是完整的XML文档。

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