While the queue is unbound in size, enabling adds to return immediately, one cannot take an element from the queue until the delay time has expired.
因为队列的大小没有界限，使得添加可以立即返回，但是在延迟时间过去之前，不能从队列中取出元素。
The number of packets in the retransmission queue is fundamentally driven by the bandwidth delay product (BDP) between the two hosts.
重传队列中包的数目基本上取决于两台主机间的带宽延迟效果（bandwidth delay product，BDP）。
Depending upon the distance between the replay position and the current log position and the size of the unspooled data in send queue, this operation might delay the alter operation.
取决于重放位置与当前日志位置之间的距离，以及发送队列中未假脱机的数据的大小，这个操作可能会延缓 alter 操作。
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