This topic applies only on the z/OS operating system.

Overview of SMF record type 120

Information resulting from the SMF data gathering process for WebSphere Application Server for z/OS is held in SMF record type 120.

This information is typically presented with the help of an SMF data viewing tool. This record format description is intended to enable your tool providers to design an SMF data viewing tool. Your system administrators will use an SMF data viewing tool with a description presented by your tool provider, since it requires them to make proper selections that limit the amount of presentation data. For example, they might want to view a specific time frame and only specific containers, classes, and methods. They may also occasionally need to refer to the record descriptions.

Two types of SMF records can be produced: activity records and interval records.
  • Activity records are gathered as each activity within a server is completed. An activity is a logical unit of business function. It can be a server or user-initiated transaction.
  • Interval records consist of data gathered at installation-specified intervals and provide capacity planning and reliability information.
Six records can be produced:
  • the Server Activity record: Subtype 1
  • the Server Interval record: Subtype 3
  • the J2EE Container Activity Record: Subtype 5
  • the J2EE Container Interval Record: Subtype 6
  • the WebContainer Activity record: Subtype 7
  • the WebContainer Interval record: Subtype 8

For additional information about using SMF records, see z/OS MVS System Management Facilities (SMF), SA22-7630.

Viewing records with the SMF Browser

You can use the SMF Browser, that is available on the product download site, to display record type 120. To download the SMF Browser, go to: https://www14.software.ibm.com/webapp/iwm/web/preLogin.do?source=zosos390.

The documentation that is provided with the download package describes how to use this tool.




Subtopics
Record Type 120 (78) - WebSphere Application Server performance statistics
Related tasks
Collecting job-related information with the System Management Facility (SMF)
Related information
MVS System Management Facilities (SMF)
Reference topic    

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Last updated: Aug 29, 2010 10:43:27 PM CDT
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