在所有情况下，都要寻找比较高的错误数据包、重新传输或丢失数据包传输数量，这些都说明网络忙。
In all cases, you are looking for a high level of error packets, retransmissions, or dropped packet transmission, all of which indicate that the network is busy.
同样，网络不能完全充满数据包；否则，将丢失心跳。
Also, the network cannot be completely overloaded with packets; otherwise the heartbeat will be lost.
数据包丢失或延迟到达情况下将启用阻塞控制，进一步限制性能以避免更多全局网络问题。
Packet loss, or late arrival, enables congestion control, which further limits performance to avoid more global networking issues.
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