Do you want to monitor the GETVIS usage of your z/VSE system ?
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Certain functions need to acquire virtual storage dynamically during job and program execution. The dynamic storage can be requested, e.g. by using the GETVIS system service, that allocates virtual storage in the GETVIS area. GETVIS areas are allocated below the bar (below 2 GB).
There are three GETVIS areas:
Sometimes it may be necessary to monitor the usage of the GETVIS are, e.g. in case of GETVIS shortage, or if GETVIS usage grow over time.
There are non-IBM tools and performance monitors available to analyze such problems. In less complex cases our GETVIS command may be useful. The GETVIS command displays information about the current size, allocation, and usage of the GETVIS area of a static or dynamic partition or of the system GETVIS area.
The GETVIS SVA or GETVIS <partition> commands provide information about the GETVIS 24-bit and overall usage as well as the largest free areas and the maxim area ever used. If you want to get more information, just at the DETAILS or ALL parameter, such as GETVIS SVA,DETAILS. DETAILS displays the subpool names and their allocations. ALL displays the subpool names and their usage.
With these parameters you may get information on subpools, that have an increased need for GETVIS space. Just issue the command from time to time. Or, you may get information on how to adapt the partition allocations or system GETVIS definitions.
The GETVIS command is described in the z/VS