Stream: Capacity & Performance
Time: 11:15 - 12:00
The availability of real memory on Z systems has greatly increased in recent years. At the same time, the amount of real memory requested by z/OS applications has also increased a lot; for this reason, real memory availability is still a critical factor for application performance.
Exhaustive measurements are available at system level in SMF 71. Some information is also available in SMF 72 but it can only be used to estimate SC and RC real memory usage.
For many years it was not possible to get information about address space real memory usage in SMF. Finally, in z/OS 3.1, IBM introduced some metrics which allow us to estimate the real memory usage of each address space.
In this presentation we will discuss these metrics by showing examples of reports you can create to understand who the real memory top users are.
There is currently no attachment for Real memory usage by address space
Danilo Gipponi has been involved in Service Levels and Cost Accounting projects since 1986. After 9 years with SAS Institute and 5 years with BMC, in 2003 he founded EPV Technologies. He has been the president of CMG-Italia since 2011 and previously served from 2001 to 2004, and overall he has been an officer of CMG-Italia for 23 years. Danilo Gipponi is a regular speaker in many International Conferences.
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