TxWait History in OBFL
Cisco MDS switches log TxWait history in the Onboard Failure Logging (OBFL) buffer when TxWait increases by 100 ms or more in a 20-second interval. Refer to Example 3-5, which shows the following: 当 TxWait 在 20 秒间隔内增加 100 毫秒或更多时,Cisco MDS 交换机会在板载故障日志 (OBFL) 缓冲区中记录 TxWait 历史记录。请参阅示例 3-5,其中显示了以下内容:
The interface and virtual link, if enabled. 接口和虚拟链路(如果启用)。
The raw TxWait increase (the delta TxWait) in the 20-second sampling period. 20 秒采样时间段内 TxWait 的原始增加值(TxWait 的 delta 值)。
Raw TxWait converted to seconds. 转换为秒的原始 TxWait。
Percentage Congestion (Percentage TxWait). 拥塞百分比(TxWait 百分比)。
Date and time. 日期和时间
The last row of Example 3-5 shows that fc9/17 was unable to transmit frames due to lack of Tx B2B credits for 14 seconds in the 20-second monitoring period ending on Apr 21, 2022, at 13:09:27. This is a congestion percentage of 72%. Note that the delta TxWait (5786677) in this 20-second interval is in 2.5 μs ticks. This is actually 14.46 seconds, which is used to calculate the congestion percentage. 例 3-5 的最后一行显示,在 2022 年 4 月 21 日 13:09:27 结束的 20 秒监控时间段内,fc9/17 有 14 秒因缺少 Tx B2B 点数而无法传输帧。拥塞百分比为 72%。请注意,在这 20 秒的时间间隔内,TxWait (5786677) 的延迟时间为 2.5 μs ticks。这实际上是 14.46 秒,用于计算拥塞百分比。