If you have a large number of small(ish) allocations (for example if you have the need to allocate a list of variable length blocks), once you have processed the list if all blocks are in there own subpool, you can code you application to free the whole subpool in one STORAGE call, as opposed to having to run the chain, to free each node in a separate STORAGE call. Now if you are using a list of fixed length blocks, I would recommend looking at the CPOOL services, rather than using STORAGE.
Wayne Driscoll Product Developer NOTE: All opinions are strictly my own. -----Original Message----- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of Lindy Mayfield Sent: Monday, August 18, 2008 11:03 AM To: [email protected] Subject: Re: A couple of memory/storage questions What is the advantage of freeing an entire subpool vs. freeing the memory by address? -----Original Message----- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of (IBM Mainframe Discussion List) Sent: 18. elokuuta 2008 18:55 To: [email protected] Subject: Re: A couple of memory/storage questions In a message dated 8/18/2008 10:42:40 A.M. Central Daylight Time, [EMAIL PROTECTED] writes: >Storage in a subpool is always in a different page than storage in another subpool (for 0-127). You can localize fetches to control block chains. Also, you can share/transfer subpools with/to different tasks. One more advantage of using different subpools is that you can free up all the storage in any given subpool by only one STORAGE (or FREEMAIN) macro. If you use different subpools for different purposes, you could free up all the storage used for purpose X by doing one FREEMAIN-type macro, whereas if you used subpool 0 for all storage, then you would need multiple FREEMAIN-type macros, each of which frees up only one piece of storage in that subpool. Bill Fairchild Rocket Software ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
