2. PERFORMANCE REPORTING ANALYSIS › 2.5 Virtual Storage Management Analysis › 2.5.2 Usage Guidelines › 2.5.2.3 Monitoring Virtual Storage Changes

2.5.2.3 Monitoring Virtual Storage Changes

Monitoring changes in system and private virtual storage
areas over an extended period of months or weeks can assist
you in determining the need for system software upgrades
which take advantage of various VSCR techniques.  Such
monitoring can also warn you of changes in the sizes of areas
like PLPA.

You can analyze virtual storage allocations in the various
system areas with the System Storage Usage Reports and Plots
described in Sections 2.5.3.2 and 2.5.3.5. Additional
detailed information is available for the Common System Area
(CSA) with reports described in Section 2.5.3.3. The methods
for producing these reports and plots are described in
Sections 2.5.6.1, 2.5.6.2, and 2.5.6.4.

You can monitor the virtual storage allocations in any
particular address space with the Private Storage Usage
Reports and Plots described in Sections 2.5.3.4 and 2.5.3.6.
Methods for producing these reports and plots are described
in Sections 2.5.6.3. and 2.5.6.5