VSMLIST is certainly the best way to test what z/OS has allocated in large blocks, but I believe that the OP would be better served by using PL/I facilities to allocate and report the storage.
-- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 ________________________________________ From: IBM Mainframe Discussion List [[email protected]] on behalf of Peter Relson [[email protected]] Sent: Saturday, March 4, 2023 9:13 AM To: [email protected] Subject: Re: Virtual Storage Manager - LDA. Updates to the LDA are done synchronously with respect to the request. Fields such as LDALOAL, LDAHIAL, LDAELOAL, LDAEHIAL might be of interest depending on what you're doing (subpool and whether the virtual is above or below 16M, in particular). I don't recall, but those might reflect allocation of anything within a given page rather than indicating the exact number of bytes allocated. If you want details from a program, use VSMLIST. Or take a dump and look at one of the IPCS VSMDATA reports. And GTF tracing of getmain/freemain/storage requests is available to you. Peter Relson z/OS Core Technology Design ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
