Administration › Managing Incident Responses › How Incident Responses Work › Performance via SNMP Investigations

Performance via SNMP Investigations

Use a performance via SNMP investigation to SNMP poll a server for its performance information, such as memory and CPU utilization.

Assign a performance via SNMP investigation to a server incident response. If the server is monitored by a CA Standard Monitor, the management console launches this investigation from the monitoring device. Otherwise, the management console launches the investigation from the management console.

From the Incidents page, a management console administrator can also launch or schedule this investigation on a server or router. To SNMP poll a router for performance information, the management console administrator must add the router to the management console as a network device.

• If you have not assigned a valid SNMP profile to the server or network device, the management console attempts to discover a valid SNMP profile. Alternatively, you can use another CA product to SNMP poll your servers and routers for performance information.
• To enable the management console to SNMP poll a server or network device, you must add a valid SNMP profile to the management console.

The management console uses the following criteria to report the overall processor and process CPU utilization values:

• Individual processor percentages are polled using HrProcessorTable (1.3.6.1.2.1.25.3.3.1.2) maintained by the host over the last minute (minute before first poll). This is a snapshot.
• The individual process lists are polled using HrSWRunPerfTable (1.3.6.1.2.1.25.5.1.1.1 and .2, cpu and mem). The CPU value is a raw time; therefore, it is polled twice and subtracted. The percentage is derived from the total CPU time used divided by available CPU time. Memory percentage is the last poll divided by available memory.

The investigation polls a server twice during an investigation--once when the incident is opened and again 5 minutes later, for the following MIBs:

• System mibs (1.3.6.1.2.1.1.*.0)
• Interface mibs (1.3.6.1.2.1.2.2.1)
• Cisco CPU mibs (1.3.6.1.4.1.9.2.1.*)
• Host resource processor (1.3.6.1.2.1.25.3.3.1)
• Host resource storage (1.3.6.1.2.1.25.2.3.1)
• IP address table (1.3.6.1.2.1.4.20.1)
• Host resource running software mib (1.3.6.1.2.1.25.4.2.1)
• Host resource running software performance mib (1.3.6.1.2.1.25.5.1.1)
• Host resource memory (1.3.6.1.2.1.25.2.2.0)

When launched or scheduled on a:

• Server, a performance via SNMP investigation produces a report about server performance and interface statistics.
• Network device, a performance via SNMP investigation produces a report about device performance and interface statistics.