I'd've said there was an additional benefit through parking of logical engines.
Cheers, Martin Martin Packer, Mainframe Performance Consultant, zChampion Worldwide Banking Center of Excellence, IBM +44-7802-245-584 email: [email protected] Twitter / Facebook IDs: MartinPacker Blog: https://www.ibm.com/developerworks/mydeveloperworks/blogs/MartinPacker From: Bob Shannon <[email protected]> To: [email protected], Date: 24/02/2012 20:00 Subject: Re: Hiper Dispatching Sent by: IBM Mainframe Discussion List <[email protected]> > Does anyone know if turning on Hiper Dispatching on a single book box machine would make a >difference in performance? The answer is yes, but I believe with your configuration the answer is no. Hiper Dispatch tries to dispatch the work on a subset of logical processors. Since you only have 4 CPs those are the only ones you can be dispatched on anyway so you get the effect of Hiper Dispatch by default. If you had more processors you'd see a benefit in using Hiper Dispatch. OTOH it probably won't hurt to turn it on to try it. Bob Shannon Rocket Software ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN Unless stated otherwise above: IBM United Kingdom Limited - Registered in England and Wales with number 741598. Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
