Peter, Exactly, btw sometimes we ask questions but the decisions are not ours for example.
Scott On Thu, Nov 28, 2019 at 10:30 AM scott Ford <idfli...@gmail.com> wrote: > Jon, > I agree but this is part of our bread and butter, makes us our money. > > Scott > > On Thu, Nov 28, 2019 at 9:29 AM Peter Relson <rel...@us.ibm.com> wrote: > >> <snip> >> If you really need speed, check if IBM has any user vector table entries >> specifically assigned for customer use. 4 load instructions instead of >> searching thru a chain. IBM assigns each entry (e.g. product vendor >> request). I vaguely recall it being called CSRCTABL but I could be wrong. >> </snip> >> >> Upon request (to me), IBM assigns to an ISV a slot in the anchor tables >> pointed to by CVTCTBL and, starting in z/OS 2.3, ECVTCTBL. >> Slots 1009 - 1024 are reserved for customer usage (i.e., the owner of the >> system) for whatever they see fit. Slots 1009 - 1024 should be used only >> for uses of which the customer approves. >> >> The slots are 1-origin, so slot 1 is at offset 0. Each slot is 4 bytes >> wide via CVTCTBL, 8 bytes wide via ECVTCTBL. The slots are in key 0 >> page-fixed common storage. >> >> Peter Relson >> z/OS Core Technology Design >> >> >> ---------------------------------------------------------------------- >> For IBM-MAIN subscribe / signoff / archive access instructions, >> send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN >> > -- > Scott Ford > IDMWORKS > z/OS Development > -- Scott Ford IDMWORKS z/OS Development ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
