VSOP CPU Usage (CPV1)

Description

This probe reports the CPU time (in nanoseconds) consumed on each CPU by all tasks in this VSOP.

Release notes

Resource configuration interface

What is measured

This probe returns a ratio that measures the time the vsop and its processes spent in the cpu. It is expressed in % meaning the maximum value is 100. What is presented in the graph is the time that was spent between a probe inquiry and the next one.

The formula used to compute the ratio is:

(The actual time spent int the cpu's in seconds between 2 probe queries * 100) / (Number of CPU cores * time between 2 probe queries in seconds)

The number of cpu cores is found by the probe.

The time between 2 probes queries is given by the configuration and depends on the BMS configuration. It usually is 1 minute.

Resource parameters

• Warning Level
• Critical Level
• Query Period - It is the time between 2 probes queries.

Performance graphs

This probe generates a graph with following performance metrics:

• CPU usage : The time spent in the CPU by the vsop and its processes in seconds.
• Warning threshold (optional): The time is in seconds and the threshold is fixed by the user.
• Critical threshold (optional): The time is in seconds and the threshold is fixed by the user.

Alarms

This probe can report following alarm states:

• WARNING: After 15 minutes during which the CPU usage in seconds surpassed the warning threshold.
• CRITICAL: After 15 minutes during which the CPU usage in seconds surpassed the critical threshold.

Possible causes

The processes are requiring more processing time.

Possible consequences

The host's performance might be affected and other VSOP on the same host might be affected also because the VSOP is taking all the CPU resources for itself.

Possible actions

Depending on the cause of the problem, different actions are to be taken.

Additional notes

Requires SNMP agent to be installed on the VSOP itself.