Virtual Storage Activity Report

The Virtual Storage Activity Report is divided into five sections, which can be produced independently or concurrently. The report sections are as follows:

• Virtual Storage Map
   This section describes the static boundaries of system areas and the private region both above and below 16 MB. The map also includes values regarding space usage in the PLPA. (See Virtual-Storage-Map-section for an example of this report.) This map can be suppressed by including the MAP=NO parameter.
   Because some values are reset at IPL time, the virtual storage map is printed once for each IPL that occurred within the DATETIME range.

   

• Common Area storage summary
   This section reports on storage usage by CSA and SQA, both above and below 16 megabytes. The Summary Report also includes information about allocated storage, free storage, and allocated area size. CSA allocated storage information is detailed by storage key. (See Common-Area-storage-summary-section for an example of this report.)

   

• Common Area storage detail
   This section details CSA and SQA allocated storage information by subpool and, for CSA, by storage key. The Detail Report includes information only about storage below 16 MB. (See Common-Area-storage-detail-section for an example of this report.) This report is generated by the DETAIL=YES parameter.

   

• Private Area storage summary
   This section reports on storage usage within the private area, above and below 16 megabytes, and above 2 gigabytes. Includes a storage map of the private area, indicating allocated area boundaries and GETMAIN limits. Storage usage data is reported for the authorized region (LSQA, SWA, and subpools 229 and 230) and the user region (subpools 0 through 128, 251 and 252). (PTFs BQM1345, BQM1318, BQM1349 applied) Memory usage measures for high virtual memory, memory objects, and 1-MB and 2-GB frames. Information about free storage, allocated storage, and allocated area size is reported for both regions in minimum, maximum, and average values. (See Private-Area-storage-summary-section for an example of this report.)

   

• Private Area storage detail
   This section reports private area storage usage by subpool. Minimum, maximum, and average values are reported for both user and authorized subpools. (See Private-Area-storage-detail-section for an example of this report.)

   

Storage addresses are reported as hexadecimal byte addresses. Storage area lengths are given in decimal K bytes (for values up to 9999 K) and in decimal megabytes (for values greater than 9999 K).

Date/time stamps, included for all minimum and maximum values, are in this format:

• In summary reports—(ddmmm/hh.mm)
• In detail reports—(dd mmm yy / hh.mm.ss)

Because virtual storage data is obtained by sampling, the minimum and maximum values reported might not represent the actual usage limits experienced during the reporting interval.

This section contains the following topics: