IBM Mainframe Discussion List <[email protected]> wrote on 03/04/2013 10:50:22 AM:
> If all page data sets are present at an IPL they will presumably get > approximately equal, round-robin use. If not, i.e., if some of them > are added after that IPL, the added ones will perhaps be less used, at > least early on. This was previously discussed here: https://listserv.ua.edu/cgi-bin/wa?A2=ind1202&L=IBM-MAIN&P=R5724&I=-3&X=-&Y=d10jhm1%40us.ibm.com&d=No+Match%3BMatch%3BMatches To quote myself, The page data set selection algorithm considers service time for the devices, but not the full percentage. One could argue that the full percentage should be considered, since it affects the likelihood of finding contiguous slots, and the CPU time to find available slots, but that is not how it currently works. Jim Mulder z/OS System Test IBM Corp. Poughkeepsie, NY ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
