The engineers tell me that for GP engines, LPAR dispatches the core as SMT-1 regardless of whether the partition is SMT-1 (PROCVIEW CPU) or SMT-2 (PROCVIEW CORE). And I wouldn't expect there to be much zIIP eligible work during system initialization, It is true that in PROCVIEW CORE, there are two zIIP threads online to z/OS, so one more to SIGP to for things that z/OS has to broadcast to all online threads. But I would not expect that to make much difference.
The system trace in a dump taken while things are slow might provide some clues. Jim Mulder z/OS Diagnosis, Design, Development, Test IBM Corp. Poughkeepsie NY IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> wrote on 02/17/2017 08:49:04 AM: > From: Carmen Vitullo <cvitu...@hughes.net> > To: IBM-MAIN@LISTSERV.UA.EDU > Date: 02/17/2017 03:39 PM > Subject: Re: Layout CPC serial number z13S > Sent by: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> > > all attempts to respond via email fails - > > Peter; > I'm going to assume you're asking me? > > we have a z13s U03 5 MSU's on a TEST LPAR > I have 1 shared GP engine and one shared Ziip, IPLing was very slow, > so slow that some processes that use USS services took so long to > initialize other tasks failed, or would not initialize, once TCP and > TSO were finally up logon took forever, backing out the change > PROCVIEW CORE with no other changes everything came up as normal > I'm Z/os 2.1 RSU1611 > contact me offline if you need, I have syslog/operlog if you want > Carmen > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN > ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
