Hi there all, Pardon my lack of experience with XCF but I lived in a UNI shell for years now I am enlightened to the world of XCF. I am wondering what could be wrong here and looking for your suggestions on where to go...
Back ground: we were running two 196's using escon CTC connections with a 14 year old policy using two primary structures (small and large). One dedicated coupling facility and one LPAR. The shop keeps all the smf data but rarely runs Monitor III so I am in the process of looking for old type 74 records to get some comparison data. Upgrade: installed two z13s last weekend with ISA links. The VAR rewrote the CFRM policy to use six structures (1 & 2 for small, 3 & 4 for medium, 5 & 6 large). The dedicated coupling facility (on the F03 box) is defined for "thin dispatch". The VAR that installed the z13's recommended this coupling definition based on the faster ISA links and the use of thin dispatch. The net result is that lpar MVSA's address space XCFAS, running on the F03, is now consuming over the 15 minute interval 10%+ cpu utilization every interval all day long. Using SYSVIEW and looking at the PLEXGRPS the IORt is pretty consistent in the 1000 total. The CPU for MVSA's XCFAS though is very jumpy, sub 1% for a couple of whacks of the enter key, 30-50% for a couple of whacks of the enter key. The monitor III display shows 86% of the xcf calls going through small structure 1, 13% of the xcf calls going through structure 3, and 1% going through structure 5. There is a little that hits structure 2 but it is insignificant. XCFAS on MVSC, the M03 box running the couple lpar, is < 1% CPU. Prior to the upgrade XCFAS on both systems averaged < 1% for most 15 minute intervals and peaked at 3% maybe once or twice a day for an interval. The bottom line is the MVSA image does two things for us, IDMS and batch. MVSC is CICS and DB2. The IDMS/CICS relationship is the majority of the XCF usage. Batch is getting WLM CPU delays due to high cpu from SYSTEM (xcfas) even though we added 20% more MSUs in the upgrade. I guess the real bottom line question though is why did my combined XCFAS cpu consumption go from an average of < 1 % on each MVS lpar to 10%+ on one and stayed the same on the other? Thanks in advanced for giving this post some time and energy :) Tracy ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
