IBM Tivoli OMEGAMON XE for CICS on z/OS, Version 5.1.0

LSR Pool Status workspace

This predefined workspace enables you to view the general state of the Local Shared Resource (LSR) pools and provides information related to their impact on performance. For example, the Lookaside Ratio information indicates what percentage of records are being retrieved from buffers rather than disks. A low Lookaside Ratio is a negative performance indicator because the disk retrievals are causing I/O. This workspace also provides statistical data regarding the numbers of strings being used and the amount of string waits.

The predefined LSR Pool Status workspace contains the following views:

The Local Shared Resource Pools table view provides the following information:

You can use the CICSPlex LSR Pool Details attribute group to customize your workspace by adding a table view to the existing LSR Pool Status workspace that provides details on a specific LSR pool, with regard to buffer type, and size within a CICS region. For example, if you had users that were reporting degraded performance and poor response times, you would check in the Local Shared Resource Pools table view and see what CICS region LSR pool has a high number of buffer reads and a low lookaside ratio. Then, using your newly created details view, you see all the details for that specific LSR pool. You notice that one file is using many more strings than the other files. You investigate the file and find that the control interval size index was increased causing a shortage of buffers. You resolve the problem by adjusting the LSR pool buffer distribution accordingly.

See the Tivoli Enterprise Portal on line help or the IBM Tivoli Enterprise Portal User's Guide for instructions on how to add a view to a workspace.

See also:


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