Radoslaw, Do any LPARs have dedicated CPs or are the CPs all shared? I've done what you describe on a machine with several LPARs, but none with dedicated CPs.
Do any LPARs have the same number of logical processors defined as physical processors installed? In our case (504 to 703 and back to 504), no LPAR had more than 3 logical CP active. So when the hardware changed configuration and the 4th physical CP "disappeared", none of the LPARs seemed to notice the difference. I've not discovered any good way to tell which physical CP a logical CP gets dispatched on. In your scenario, I suspect that any LPAR with 7 logical CPs will notice that 1 of its 7 LPs won't dispatch and will either pretend that a CF CPU(6),OFFLINE command has been issued (or ask Hiperdispatch to park it). Tom Vacation Notice: None currently scheduled Tom Puddicombe Mainframe Performance & Capacity Planning CSC 31 Brookdale Rd, Meriden, CT 06450 ITIS | (860) 428-3252 | [email protected] | www.csc.com This is a PRIVATE message. If you are not the intended recipient, please delete without copying and kindly advise us by e-mail of the mistake in delivery. NOTE: Regardless of content, this e-mail shall not operate to bind CSC to any order or other contract unless pursuant to explicit written agreement or government initiative expressly permitting the use of e-mail for such purpose. From: "R.S." <[email protected]> To: [email protected] Date: 01/07/2014 11:45 AM Subject: Online CPU upgrade with ...downgrade Sent by: IBM Mainframe Discussion List <[email protected]> The following scenario: machine 2817-607 is planned to be upgraded to model 2817-706. It is CPU power upgrade in terms of MSU or MIPS, but it is also reduction of # of CPUs by one. So, in some sense it will be deactivation of one of the CPs. It is quite obvious that LPAR using *this one* CP only cannot survive the process. However in my understanding all LPARs using the CP should configure it OFFLINE (CF CPU(nn),OFFLINE) before the model conversion. Questions: 1. How can I predict (know) which CPU(nn) will be deactivated? 2. Is it safe for the LPAR (with z/OS) to deactivate the CP without CF CPU(nn),OFFLINE as a prerequiste? 3. Will the model conversion proceed even if it's disruptive for some LPARs (a case of single CPU) ? -- Radoslaw Skorupka Lodz, Poland -- Treść tej wiadomości może zawierać informacje prawnie chronione Banku przeznaczone wyłącznie do użytku służbowego adresata. Odbiorcą może być jedynie jej adresat z wyłączeniem dostępu osób trzecich. Jeżeli nie jesteś adresatem niniejszej wiadomości lub pracownikiem upoważnionym do jej przekazania adresatowi, informujemy, że jej rozpowszechnianie, kopiowanie, rozprowadzanie lub inne działanie o podobnym charakterze jest prawnie zabronione i może być karalne. Jeżeli otrzymałeś tę wiadomość omyłkowo, prosimy niezwłocznie zawiadomić nadawcę wysyłając odpowiedź oraz trwale usunąć tę wiadomość włączając w to wszelkie jej kopie wydrukowane lub zapisane na dysku. This e-mail may contain legally privileged information of the Bank and is intended solely for business use of the addressee. This e-mail may only be received by the addressee and may not be disclosed to any third parties. If you are not the intended addressee of this e-mail or the employee authorized to forward it to the addressee, be advised that any dissemination, copying, distribution or any other similar activity is legally prohibited and may be punishable. If you received this e-mail by mistake please advise the sender immediately by using the reply facility in your e-mail software and delete permanently this e-mail including any copies of it either printed or saved to hard drive. mBank S.A. z siedzibą w Warszawie, ul. Senatorska 18, 00-950 Warszawa, www.mBank.pl, e-mail: [email protected] Sąd Rejonowy dla m. st. Warszawy XII Wydział Gospodarczy Krajowego Rejestru Sądowego, nr rejestru przedsiębiorców KRS 0000025237, NIP: 526-021-50-88. Według stanu na dzień 01.01.2013 r. kapitał zakładowy mBanku S.A. (w całości wpłacony) wynosi 168.555.904 złote. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
