Duration Monitor

A performance monitor that computes the average time for a process. Defines a monitor for measuring the time for the HTTP responses, session duration, and so on.

For example, if N and T are the total number of responses and the total response time respectively, the values under the last measurement node are calculated as follows:

number of requests = Ni - Ni-1

average time = Ti - Ti-1 / Ni - Ni-1 or 0 if Ni = Ni-1

There are two ways of instrumenting the duration monitor: in the monitor-configuration.xml and in the source code:

Case 1

In the monitor-configuration.xml this monitor is specified in the following way:

<duration-monitor name="Commit Duration" configuration-group="ConfigMgr.CommitDuration">
   <monitored-resource name="ConfigurationManager" type="MANAGER"/>
   <duration-attribute-mapping>
      <total-number-attribute>
         <observed-resource-attribute name="AccNrOfCommits"/>
      </total-number-attribute>
      <total-time-attribute>
         <observed-resource-attribute name="AccCommitTime"/>
      </total-time-attribute>
   </duration-attribute-mapping>
</duration-monitor>

The method returning the total number of tries is:
```
public long getAccNrOfCommits();
```

In this example, the accumulated number of commit-requests since the server startup is returned.

The method returning the total time is:
```
public long getAccCommitTime();
```

In this example, the accumulated time (in milliseconds) of processing all commit-requests since the server startup is returned.

Case 2

In the monitor-configuration.xml this monitor is specified in the following way:

<duration-monitor name="Commit Duration" configuration-group="ConfigMgr.CommitDuration">
   <monitored-resource name="ConfigurationManager" type="MANAGER"/>
   <duration-attribute-mapping>
      <duration-attribute>
         <observed-resource-attribute name="DurationValue "/>
      </duration-attribute>
   </duration-attribute-mapping>
</duration-monitor>

The method returning the necessary data is:

public com.sap.jmx.monitoring.api.DurationValue getDurationValue();