即使侦听器端口的最大会话属性设置为一个较大的值，您也可能无法看到并发处理消息的会话数。

Even though the listener port's maximum sessions property is set to a higher value, you might not see that number of sessions processing messages concurrently.

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max - size元素定义允许的最大并发连接数。

The max-size element defines the maximum number of concurrent connections that are allowed.

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在侦听器端口设置最大消息值及最大会话并发数。

The Maximum Messages value is set on the listener port, along with the Maximum Sessions concurrency setting.

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