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Performance

When you select Performance from the EZSRM menu, you advance to the Performance menu options, which are subdivided into Storage Performance and Real Time Statistics subcategories.

Note

The active SMDBASxx member provides the list of VSAM data sets that make up the different product databases. Refer to the MainView SRM DBAS keyword.

The storage performance options provide historical performance statistics for physical and logical DASD devices. For more information, see Storage-performance.

The real time statistics options provide real-time performance statistics for both physical and logical DASD devices. This information enables you to take corrective action to prevent performance-related problems. For example, using the Real Time Statistics options, you can:

  • Identify best- and worst-performing volumes
  • Locate most active volumes
  • Monitor latency (waiting time)
  • Review cache efficiency (the number of misses, hits, and read/write ratios)

For more information, see Real-time-statistics.

 

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