Peter Relson wrote: > While REGION=0M, in the absence of other things, does indicate not to > reserve any particular amount for system subpools, many customers use their > IEFUSI exit to provide a limit to what REGION=0M can provide.
While I've not written a IEFUSI exit in MANY years (and even then only as a sample, IIRC) I nowadays stress the importance of keeping control of what users can allocate, ESPECIALLY in 64 bit mode. IEFUSI seems to me the right way to do this (as well as with REGION, HVSHARE and MEMLIMIT). Anyone care to tell me what an installation would have to do to make their "31-bit ready" IEFUSI into a "64-bit ready" one? One thing I AM certain of is that allowing users to obtain huge amounts of virtual and then to touch all the pages (perhaps mistakenly zeroing them) is a great recipe for chaos. Cheers, Martin Martin Packer Performance Consultant IBM United Kingdom Ltd +44-20-8832-5167 +44-7802-245-584 [EMAIL PROTECTED] Unless stated otherwise above: IBM United Kingdom Limited - Registered in England and Wales with number 741598. Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU ---------------------------------------------------------------------- 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
