Certainly sounds like requirement time. We see the same issue particularly on one of our Dev systems with 14 DB2 members on it.
Jerry Whitteridge Manager Mainframe Systems & Storage Albertsons - Safeway Inc. 623 869 5523 Corporate Tieline - 85523 If you feel in control you just aren't going fast enough. -----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Tom Conley Sent: Tuesday, April 11, 2017 11:52 AM To: [email protected] Subject: EXTERNAL: Re: Paging subsystems in the era of bigass memory On 4/11/2017 2:46 PM, Jesse 1 Robinson wrote: > The problem we face is 'paging creep'. Right after IPL, systems show 0% ASM > usage for some period of time. Then usage starts to creep up until we get > warnings, then eventually hit the no-more-SVC-dumps condition. Adding memory > to an LPAR slows the creep but cannot seem to stop it altogether. The problem > is most pronounced on systems with large DB2 apps. > > Part of the problem, I learned some time back at SHARE, is that there is no > mechanism to 'reclaim' page slots that no longer need to remain on disk. Once > storage gets paged out, it sits there like a sandbag until the owning task is > stopped. Contrast that with JES2 spool track reclaim, which constantly > munches through spool like Pacman and frees up unneeded space. > > . > . > J.O.Skip Robinson > Southern California Edison Company > Electric Dragon Team Paddler > SHARE MVS Program Co-Manager > 323-715-0595 Mobile > 626-543-6132 Office ⇐=== NEW > [email protected] > Preach it Brother Skip!! After IPL, I'm at 0%. A week in, 15%, a month in, 44%. If this is indeed a "feature", then we need to create a requirement to fix this. Tom ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN ________________________________ Warning: All e-mail sent to this address will be received by the corporate e-mail system, and is subject to archival and review by someone other than the recipient. This e-mail may contain proprietary information and is intended only for the use of the intended recipient(s). If the reader of this message is not the intended recipient(s), you are notified that you have received this message in error and that any review, dissemination, distribution or copying of this message is strictly prohibited. If you have received this message in error, please notify the sender immediately. ________________________________ ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
