IMHO autotune won't ever be enabled and might even be removed from the displayable options at some time. As for adding your catalogs to VLF would be a good first step for performance.
Mark Jacobs Sent from ProtonMail, Swiss-based encrypted email. GPG Public Key - https://api.protonmail.ch/pks/lookup?op=get&[email protected] ------- Original Message ------- On Thursday, August 17th, 2023 at 4:56 PM, Pommier, Rex <[email protected]> wrote: > Hi list, > > Curiosity question more than anything. I saw an old post from Lizette talking > about migrating from z/OS 1.4 to 1.7 and noticing that CAS autotune was now > active. Yet I'm running 2.4, and seeing that autotune is disabled and the > manual says it cannot be enabled. That leads me to a couple questions. > Obviously IBM shut off the ability to do autotuning for a reason. Any > educated guess as to whether or when IBM may revisit this and get it working? > > Most of my large catalogs have a CAS cache hit ratio of well under 10%. > Looking at a couple catalogs I see that I have default (read very few) data > or index buffers. Would I be better off increasing the number of buffers for > my heavily hit catalogs or should I add these catalogs to VLF? > > TIA, > > Rex > > ---------------------------------------------------------------------- > The information contained in this message is confidential, protected from > disclosure and may be legally privileged. If the reader of this message is > not the intended recipient or an employee or agent responsible for delivering > this message to the intended recipient, you are hereby notified that any > disclosure, distribution, copying, or any action taken or action omitted in > reliance on it, is strictly prohibited and may be unlawful. If you have > received this communication in error, please notify us immediately by > replying to this message and destroy the material in its entirety, whether in > electronic or hard copy format. Thank you. > > > ---------------------------------------------------------------------- > 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
