User Storage Analysis

Specifics - User storage analysis:

Once the system storage analysis has been done, the next step is to look at individual users/servers. This will show which users/servers/groups are using the most storage. Several screens/reports show user storage analysis below.

Helpful ESAMON screens/ESAMAP reports (further explained below):

ESAUSP2 - Shows more virtual machine main storage utilization information. Both screen and report samples:

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  • Resident Actv - This shows the active resident memory for each active user.
  • Pages/Sec - This shows how much paging is occurring. If the number of spool writes for a userid is over 100, this is excessive and should be reviewed. The report can be helpful to show the daily top Classes/Users for each 15 minute interval.
    • ESAUSTR - Shows user storage utilization. Both screen and report samples:

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  • IBR - This shows Invalid But Resident pages above and below the 2GB line. Watch for significant changes.
  • AgeList - This shows the IBR storage in the agelist. The agelist is used by the system's frame replenishment algorithm when storage is needed. Watch for significant changes.
  • PreWrite IBR/Agelst - This shows pages either already backed on disk (IBR) or pages already written to disk (Agelst). If there are high numbers in these lists, it would indicate a problem.
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