We stopped asking for SMF 41-3 LONG ago: The result for LLA was always the same.
We're more or less stuck with "double it then double it again if things get better". Not sure how we'd tell if things actually DID get better. So the exits route is good for the very curious. Cheers, Martin Martin Packer, zChampion, Principal Systems Investigator, Worldwide Banking Center of Excellence, IBM +44-7802-245-584 email: martin_pac...@uk.ibm.com Twitter / Facebook IDs: MartinPacker Blog: https://www.ibm.com/developerworks/mydeveloperworks/blogs/MartinPacker From: Elardus Engelbrecht <elardus.engelbre...@sita.co.za> To: IBM-MAIN@LISTSERV.UA.EDU Date: 25/11/2014 13:39 Subject: Re: VLF Caching Sent by: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> Vernooij, CP (ITOPT1) - KLM wrote: >That a tricky question: VLF writes SMF 41 records, but they are unusable for LLA. Since LLA manages its VLF cache and knows what is in it and what is not, it will always have a 100% hitratio on its VLF cache, which will be reported by VLF records 41. Via LLA exits 1 and 2, we write SMF records with useful LLA information and these records provide how many fetches LLA does from its VLF cache and how many from disk. From that ratio, we decide if the VLF cache is sufficient or not. Hmmm. Very Interesting, I have a gut feeling about SMF 41, but the contents seemed to (at least) me that it do no answer this thread. I should have looked at LLA too. Thanks, I really appreciate your informative reply, you cured my curiousity! It is much appreciated! Groete / Greetings Elardus Engelbrecht ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN Unless stated otherwise above: IBM United Kingdom Limited - Registered in England and Wales with number 741598. Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
