如果在客户机可以跟踪发出的SACK选项的数目，则重传队列的大小可从扫描包计数器中计算得到。
The average size of the retransmit queue can be calculated from the packets scanned counter if the number of SACK options sent is also tracked at the client.
性能跟踪格式化器是一个解析选项，它将包含性能计数器数据的转储文件格式化为可读文本(请参见清单6)。
The performance trace formatter is a parsing option that formats a dump file containing performance counter data into readable text (see Listing 6).
使用udi计数器跟踪数据变化。
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