Hi Bill, everyone On top of this, we manually factor for failover, headroom for growth etc. as 20% of current avg/peak (for example), and then allocate 1.2x memory for the CF LPAR itself? In short, how does one go from structure size calculations to CF LPAR memory sizing, in the context of machine or CFCC upgrades.
- KB ------- Original Message ------- On Sunday, June 18th, 2023 at 8:05 AM, Bill Neiman <[email protected]> wrote: > The appropriate tool for resizing structures during a migration from one > CFLevel to another is the SIZER utility, which is distinct from CFSizer. > SIZER uses the IXLMG and IXCQUERY APIs to collect structure attribute and > count information from all allocated structures, and then uses the IXLCSP API > to direct structure size computation requests based on that collected > information to all CFs connected to the system from which it is running. You > can download the SIZER package, containing the executable, linkedit JCL, > execution JCL, and a user guide, from the CFSizer alternate sizing techniques > page at > https://www.ibm.com/support/pages/cfsizer-alternate-sizing-techniques. The > utility runs as a batch job or started task. The documentation explains the > use case, procedure for use, and interpretation of the results. Read it > carefully before running the utility. Note in particular that for SIZER to be > helpful during migration, you must run it when both old and new CFs are > installed in the sysplex. > > Bill Neiman > IBM Parallel Sysplex Development > > ---------------------------------------------------------------------- > 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
