On Wed, 12 Apr 2017 09:50:44 -0500, Joel C. Ewing wrote: > >GETMAIN returns a success indication based purely on whether virtual >storage is available to the address space within the REGION size >constrains. > Does it not check for available paging space? Does this imply that your job and my job can each do a GETMAIN for storage which in the aggregate exceeds the available paging space and both will succeed?
>It is the SysProg's non-trivial job to configure the LPAR real memory >and configure z/OS to adequately constrain max REGION sizes, the number >of address spaces and size the paging subsystem so that page thrashing >doesn't occur and critical page slot thresholds in the paging subsystem >aren't exceeded. There are tools, configuration parameters, and exits >that make that possible. > Then if you job touches all its pages then my job attempts to touch all its pages, may I experience a failure because there are no slots to page something out? -- gil ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
