For those 2 hours your SCRT costs will spike
Sent from my iPhone No one said I could type with one thumb > On Dec 17, 2025, at 10:07, Jay Maynard > <[email protected]> wrote: > > We cut our production LPAR over from a z14 to a z16 this morning, yay! We > did discover one thing the hard way, and it came as a nasty shock. > > The z16's IPL Boost feature is a nice thing. It basically unleashes the two > zIIPs we have configured (alongside the two CPs on a z16-M02) to do CPU > workloads as well. It did make our system come up much quicker. But when > the hour was up, the system ended the boost by configuring the two zIIPs > completely offline. We didn't discover this until almost three hours later > when we realized that no work was getting dispatched on the zIIPs. We > recovered by configuring the two zIIPs online. > > We're an Adabas and Natural shop, and essentially our entire application > workload is zIIP eligible and normally runs that way. Not having the zIIPs > running would have severely impacted our system's performance. > > Is there a way to have the system end boost not by taking the zIIPs > completely offline, but making them zIIPs again? Or is the best approach > here to automate a response to the IEF678I or IWM064I messages to issue the > CF CPU command? > -- > Jay Maynard > > ---------------------------------------------------------------------- > 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
