1. Clarification on WC=YES
In our last TUNING Letter issue (1999, No. 4), we had an article on page 5 describing a technique for limiting CPU capacity. We described how a reader had set WC=YES on a single test LPAR to ensure that the LPAR took its entire weight, thus restricting that amount of capacity from the other LPARs. The example was from a Skyline machine. I didn’t clarify that this technique is ONLY available using HDS’s MLPF facility. It is NOT available for IBM’s PR/SM or Amdahl’s MDF. PR/SM and MDF allow you to only specify WC=YES for all LPARs at once.
That’s all for now. Stay tuned!