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The two reports described here contain the most important performance and system load information about the monitored Java instances, from SAP NetWeaver release 7.10. Most of the information comes from the Java Startup Framework. There are two IT performance reports to give you a quick overview of the development of these measures over time:

  • Java Sessions & Threads

    This report shows the mean number of sessions, and the number of active and long-running threads, in two graphics.

  • Java Garbage Collection

    The report shows the two most important performance values for Java instance garbage collections, the memory released per minute, and the percentage of the time that a garbage collection runs, for the server process.

Note Note

The Java performance data comes from the CCMS monitoring infrastructure. The reports show values of the following MTE classes:

Report

MTE class

Meaning

Java Sessions & Threads

Sess. mgmt. open web session count

Number of open web sessions. A web session is identified by a cookies (so a web session can comprise several browser sessions which share a cookie)

Sess Mgmt. Open Security Session Count

Number of open security sessions. A security session contains security-relevant user information which is specified in the associated HTTP session

Sess Mgmt. Open EJB Session Count

Number of open EJB sessions (Enterprise Java Beans)

JSF_Threads_Num_Active

Number of active threads in the thread pool

JSF_Threads_Num_Longrunners

Number of threads with too long runtime. A thread is a long runner if it exceeds the value specified in the profile parameter service/j2eethreadtasktime/red. This value is 20 seconds, by default.

Java Garbage Collection

JSF Garbage Coll Avg Duration

Percentage of the time during which garbage collection runs for a server process

JSF Garbage Coll Collected Memory

Memory space released by garbage collections, per minute
End of the note.

 

The following general information about using IT performance reports is under Using IT Perfomance Reporting:

  • Call the reports in the System Monitoring work center

  • Select periods

  • Filters