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Fabric OS Administrator’s Guide 391
53-1002745-02
Displaying bottleneck statistics
13
Switch-wide sub-second latency bottleneck criterion:
====================================================
Time threshold - 0.800
Severity threshold - 50.000
Switch-wide alerting parameters:
================================
Alerts - Yes
Latency threshold for alert - 0.200
Congestion threshold for alert - 0.700
Averaging time for alert - 200 seconds
Quiet time for alert - 150 seconds
Per-port overrides for alert parameters:
========================================
Port Alerts? LatencyThresh CongestionThresh Time (s) QTime (s)
=================================================================================
46 N -- -- -- --
47 L 0.750 -- 250 150
Displaying bottleneck statistics
You can use the bottleneckmon --show command to display a history of bottleneck conditions, for
up to three hours. This command has several display options:
• Display only latency bottlenecks, only congestion bottlenecks, or both combined.
• Display bottleneck statistics for a single port, bottleneck statistics for all ports on the switch, or
a list of ports affected by bottleneck conditions.
• Continuously update the displayed data with fresh data.
Use the following procedure to display the bottleneck statistics:
1. Connect to the switch and log in using an account with admin permissions.
2. Enter the bottleneckmon --show command.
Example of displaying the bottleneck history in 5-second windows over a period of 30 seconds
In this example, the definition of bottlenecked ports is any port that had a bottleneck occur during
any second in the corresponding interval.
switch:admin> bottleneckmon --show -interval 5 -span 30
==================================================================
Wed Jan 13 18:54:35 UTC 2010
==================================================================
List of bottlenecked ports in most recent interval:
5
==================================================================
Number of
From To bottlenecked ports
==================================================================
Jan 13 18:54:05 Jan 13 18:54:10 1
Jan 13 18:54:10 Jan 13 18:54:15 2
Jan 13 18:54:15 Jan 13 18:54:20 1
Jan 13 18:54:20 Jan 13 18:54:25 1
Jan 13 18:54:25 Jan 13 18:54:30 0
Jan 13 18:54:30 Jan 13 18:54:35 0