Just to make sure I myself haven't caused any confusion, as previously stated, irrespective of the type of processor i.e SAP, CP, ICF, IFL, zIIP (and systems which had zAAP) the 'speed/cycle time' of ALL the different processor types is always the SAME (this includes sub-capacity CPs). Only CPs have the sub-capacity settings.
Parwez Hamid ________________________________ From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> on behalf of Christopher Y. Blaicher <cblaic...@syncsort.com> Sent: 03 March 2019 16:07 To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: CPU time and zIIP ZIIP and ZAAP processors always run at full speed, even when running on a sub-capacity box. One thing, among many, I don't know is how IBM implements sub-capacity. Slow the clock speed? Skip cycles? Chris Blaicher Technical Architect Syncsort, Inc. -----Original Message----- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf Of Parwez Sent: Sunday, March 3, 2019 6:05 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: CPU time and zIIP One regular misconception about (cycle time), irrespective of the type of processor the 'speed/cycle time' of ALL the processors is the SAME. CPs with CAPACITY setting of 7xx (Zxx in case of the 'BC' class system) are FULL capacity. Others are sub-capacity. So if the workload system hasn't enough capacity, then it might not run as well as one with abundance. So from a cycle point (speed?), zIIPs are not faster. Parwez Hamid ________________________________ ---------------------------------------------------------------------- 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
