Users Guide

442 Fabric OS Administrator’s Guide
53-1002920-02
Displaying bottleneck statistics
15
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
Disabling bottleneck detection on a switch
When you disable bottleneck detection on a switch, all bottleneck configuration details are
discarded, including the list of excluded ports and non-default values of alerting parameters.
Use the following procedure to disable bottleneck detection.
1. Connect to the switch and log in using an account with admin permissions.
2. Enter the bottleneckmon --disable command to disable bottleneck detection on the switch.