I’ve seen plenty of things running above 50 - in lots of customers worldwide. Typically Db2 Engine service class, particularly where I/O Priority Queuing is enabled. In that latter case to would be VERY disappointing to see attainment as low as 50% - as it would probably be caused by Delay for GCP or Delay for zIIP.
Cheers, Martin Sent from my iPad > On 14 Oct 2020, at 13:47, Allan Staller <[email protected]> wrote: > > Classification: HCL Internal > > The max possible velocity is (theoretically) 100. I.E. there are zero delays in the sample. > The only thing I have ever seen that realistically exceeded 50 was a CICS address space running in server mode (as opposed to transaction mode). > > Check your RMF III reports (or RMFPP if you prefer) during period of "good" performance and find the achieved velocity. > Add about 10 percent and you should get a WLM vote to add resources to that service class. > 20 percent should almost be a guarantee. > > HTH, > > -----Original Message----- > From: IBM Mainframe Discussion List <[email protected]> On Behalf Of Gibney, Dave > Sent: Tuesday, October 13, 2020 4:28 PM > To: [email protected] > Subject: Max possible velocity? > > [CAUTION: This Email is from outside the Organization. Unless you trust the sender, Don’t click links or open attachments as it may be a Phishing email, which can steal your Information and compromise your Computer.] > > It has been quite some time since I had to worry about my WLM policy. We've had ample capacity since 2007. Now, as We begin to wind down, we have reduced our contracted MSU capacity. > We dropped from 15 to 12 on an 5 way z13S-N05. My WLM policy, last seriously adjusted in 2007 when we moved to a z9-L03 has velocities ranging from a high of 90 (Adabas, Imp 1) down to 5 (BATCH Imp 5) > We are experiencing just a minor amount of performance pain. It strikes me that perhaps some of my higher velocity goals (90, 70, 60, 50) may be unattainable under the now reduced capacity. > > What is the high end for possible, single threaded (Adabas) velocity here? Or, where should I be reading in current manuals. I was better at this 15 years ago. > > Dave Gibney > Information Technology Services > Washington State University > > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN > ::DISCLAIMER:: > ________________________________ > The contents of this e-mail and any attachment(s) are confidential and intended for the named recipient(s) only. E-mail transmission is not guaranteed to be secure or error-free as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or may contain viruses in transmission. The e mail and its contents (with or without referred errors) shall therefore not attach any liability on the originator or HCL or its affiliates. Views or opinions, if any, presented in this email are solely those of the author and may not necessarily reflect the views or opinions of HCL or its affiliates. Any form of reproduction, dissemination, copying, disclosure, modification, distribution and / or publication of this message without the prior written consent of authorized representative of HCL is strictly prohibited. If you have received this email in error please delete it and notify the sender immediately. Before opening any email and/or attachments, please check them for viruses and other defects. > ________________________________ > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAINUnless > 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
