User guide

10-5
Cisco Media Gateway Manager 5.0 User Guide
OL-5461-02
Chapter 10 Managing Performance
How Is Performance Data Collected?
10.3 How Is Performance Data Collected?
Performance data collection is the process of collecting performance-related data from network devices
and storing them in a database or data file. This information can then be used for locating, diagnosing,
and correcting network problems to increase network reliability and effectiveness, and to ensure that
fault management can be more than just handling emergencies. The data can also be used to increase the
productivity of network users.
This section includes the following information:
• 10.3.1 Enabling or Disabling Performance Monitoring
• 10.3.2 Self Monitor Table
• 10.3.3 Activating or Deactivating Performance Monitoring
10.3.1 Enabling or Disabling Performance Monitoring
Performance monitoring is optional, but you must enable it if you want to collect performance
parameters.
Note Performance management data collection is resource intensive in terms of CPU, disk space, and data
communications network (DCN) utilization, so you should exercise proper planning and resource
monitoring when you are using the performance management collection feature of Cisco MGM.
PM data collection for individual NEs can be enabled or disabled as follows:
Step 1 In the Domain Explorer window, select the NE node for which to stop or start PM data collection. The
Network Element Properties sheet appears.
Step 2 In the PM Collection area of the Status tab of the Network Element Properties sheet, set the PM data
collection state to 15 Min. Check this box to enable collection of PM data every 15 minutes. Uncheck to
disable PM collection.
Step 3 Click Save to save changes to the database. The changes take effect immediately.
10.3.2 Self Monitor Table
When Cisco MGM comes close to or exceeds the limits of its performance, it might result in a reduction
in the response time of the system. In this case, error messages are displayed to inform the user to restore
normal operation. The Self Monitor Table allows users to monitor parameters that help in determining
when Cisco MGM is close to the limit of its performance. See Figure 10-1.
Self monitoring can be used for CPU usage, memory usage, and disk usage. You can filter the Self
Monitor Table on the collection time, and/or the parameter name.
To view the Self Monitor Table, at the top level of the Hierarchy pane in the Domain Explorer, choose
Administration > Self Monitor. The Self Monitor Table appears, see Table 10-2 for details.