All, Not sure how many of you are in our shoes, but we ran into a bug in 1.8(problem is in 1.9 too) toleration maintenance for RLS. It involves PSP bucket identified PTF's OA26534, OA27378, and OA26039. Bottom line is that IBM introduced MLS(Multiple Lock Structures) in 1.10 of SMSVSAM, and the toleration maintenance for 1.8 and 1.9 is to support that. There are severe performance problems with the toleration maintenance to the point we cannot take it to our production environments. First iteration of the problem was elongated RLS dataset opens causing major GRS enqueue delays, which IBM has developed a APARfix for, but that APARfix now exhibits huge sustained CPU hits in SMSVSAM during dataset opens by a factor of 10 or more.
Bottom line, is that we cannot move forward with 1.10 on any system in the plex until this problem is cleared up. Our PMR has been open since 10/10/08, with no end in sight. Given the length of time our problem has been on the queue, there must not be that many big RLS users out there. Dave _________________________________________________________________ Dave Jousma Assistant Vice President, Mainframe Services [email protected] 1830 East Paris, Grand Rapids, MI 49546 MD RSCB1G p 616.653.8429 f 616.653.8497 This e-mail transmission contains information that is confidential and may be privileged. It is intended only for the addressee(s) named above. If you receive this e-mail in error, please do not read, copy or disseminate it in any manner. If you are not the intended recipient, any disclosure, copying, distribution or use of the contents of this information is prohibited. Please reply to the message immediately by informing the sender that the message was misdirected. After replying, please erase it from your computer system. Your assistance in correcting this error is appreciated. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
