Dell Brocade 6520 Command Reference Supporting Fabric OS v7.1.0 - Page 111

bottleneckMon 2 When you specify one of the three alert options, the following parameters become available, although the threshold options are subject to the restrictions stated above. -cthresh congestion_threshold Specifies the severity threshold for congestion that triggers an alert. The threshold indicates the percentage of one-second intervals affected by the bottleneck condition within the specified time window. The threshold is expressed as the equivalent fraction between 0 and 1. The default value is 0.8. -lthresh latency_threshold Specifies the severity threshold for latency that triggers an alert. The threshold indicates the percentage of one-second intervals affected by the bottleneck condition within the specified time window. The threshold is expressed as the equivalent fraction between 0 and 1. The default value is 0.1. -time window Specifies the time window in seconds over which the percentage of seconds affected by bottleneck conditions is computed and compared with the threshold. The maximum window size is 10800 seconds (3 hours). The default is 300 seconds. This parameter is valid with all three alert options. -qtime quiet_time Specifies the minimum number of seconds between consecutive alerts. The default is 300 seconds. The maximum is 31556926 seconds (approximately one year). This parameter is valid with all three alert options. -noalert Disables alerts. This is the default state assumed if neither -alert nor -noalert is specified. -lsubsectimethresh time_threshold Sets the threshold for latency bottlenecks at the sub-second level. The time_threshold specifies the minimum fraction of a second that must be affected by latency in order for that second to be considered affected by a latency bottleneck. For example, a value of 0.75 means that at least 75% of a second must have had latency bottleneck conditions in order for that second to be counted as an affected second. The time threshold value must be greater than 0 and no greater than 1. The default value is 0.8. Note that the application of the sub-second numerical limits is approximate. This command erases the statistics history and restarts alert calculations (if alerting is enabled) on the specified ports. When used with the config option, you must specify a port. -lsubsecsevthresh severity_threshold Specifies the threshold on the severity of latency in terms of the throughput loss on the port at the sub-second level. The severity threshold is a floating-point value in the range of no less than 1 and no greater than 1000. This value specifies the factor by which throughput must drop in a second in order for that second to be considered affected by latency bottlenecking. For example, a value of 20 means that the observed throughput in a second must be no more than 1/20th the capacity of the port in order for that second to be counted as an affected second. The default value is 50. This command erases the statistics history and restarts alert calculations (if alerting is enabled) on the specified ports. When used with the config option, you must specify a port. Fabric OS Command Reference 83 53-1002746-01