Re: Paging increase when going from z/OS 1.9 to 1.11
Can you tell who/what is paging, (look in RMF). Brian -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Paging increase when going from z/OS 1.9 to 1.11
Hi, We are seeing a paging increase after upgrading to z/OS 1.11. Has anyone else seen this? TIA Gadi לשימת לבך, בהתאם לנהלי החברה וזכויות החתימה בה, כל הצעה, התחייבות או מצג מטעם החברה, מחייבים מסמך נפרד וחתום על ידי מורשי החתימה של החברה, הנושא את לוגו החברה או שמה המודפס ובצירוף חותמת החברה. בהעדר מסמך כאמור (לרבות מסמך סרוק) המצורף להודעת דואר אלקטרוני זאת, אין לראות באמור בהודעה אלא משום טיוטה לדיון, ואין להסתמך עליה לביצוע פעולה עסקית או משפטית כלשהי. Please note that in accordance with Malam's signatory rights, no offer, agreement, concession or representation is binding on the company, unless accompanied by a duly signed separate document (or a scanned version thereof), affixed with the company's seal. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: Paging increase when going from z/OS 1.9 to 1.11
Hi, We are seeing a paging increase after upgrading to z/OS 1.11. Has anyone else seen this? TIA Gadi When we went from 1.9 to 1.11 we saw this effect. We were directed to a GRS PTF. I would open an ETR with IBM to see what other things they might have on this issue. This has helped to reduce our paging. Lizette -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: Paging increase when going from z/OS 1.9 to 1.11
There's a CPU hit ptf for *master* doing work on available frames queue. It might show up as a paging issue on your system. Might want to check it out. Chip Grantham | Ameritas | Sr. IT Consultant | cgrant...@ameritas.com 5900 O Street, Lincoln NE 68510 | p: 402-467-7382 | c: 402-429-3579 | f: 402-325-4030 Lizette Koehler stars...@mindspring.com Sent by: IBM Mainframe Discussion List IBM-MAIN@bama.ua.edu 05/05/2011 08:19 AM Please respond to IBM Mainframe Discussion List IBM-MAIN@bama.ua.edu To IBM-MAIN@bama.ua.edu cc Subject Re: Paging increase when going from z/OS 1.9 to 1.11 Hi, We are seeing a paging increase after upgrading to z/OS 1.11. Has anyone else seen this? TIA Gadi When we went from 1.9 to 1.11 we saw this effect. We were directed to a GRS PTF. I would open an ETR with IBM to see what other things they might have on this issue. This has helped to reduce our paging. Lizette -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html *** This message may contain confidential information intended only for the use of the addressee(s) named above and may contain information that is legally privileged. If you are not the addressee, or the person responsible for delivering it to the addressee, you are hereby notified that reading, disseminating, distributing or copying this message is strictly prohibited. If you have received this message by mistake, please immediately notify us by replying to the message and delete the original message immediately thereafter. Thank you. *** -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: Paging increase when going from z/OS 1.9 to 1.11
Gadi When we migrated from z/OS 1.9 to 1.11 we were hit by APAR OA33307 which caused excess paging. Description - At z/OS R11, if system is 2Gig REAL, RSM will schedule an SRB ( IAXUO IARUOGBS ) to perform Frame Steal operations running under the *MASTER* asid if a PageFix against HighVirual (64bit) storage is done and no High Frames ( 2Gig Real) are available. RSM attempts to protect 31bit Real Frames as best as possible by first stealing 64bit real frames if none are available. This causes whichever jobs that originally owned those frames (often DB2) to be paged out to AUX when at R10 this was either done to a much smaller extent or not at all. Whichever job/application owns the most High Frames ( 64bit) is most likely to experience the highest number of frames being stolen and thus an increase in AUX Slots. This can *potentially* (though not always) result in performance delays for that application when those pages have to be paged back in to real frames. This problem is usually seen almost immediately upon migrating to z/OS R11, and especially if Real storage is between 2Gig - 4Gig OR (for systems 4Gig) all of the High Frames ( 64Gig ) are in use. For systems between 2Gig - 4Gig the more predominant external symptom is abnormally high CPU in *MASTER*, running under IARUOGBS ( IAXUO ). ADDITIONAL SYMPTOMS: MsgIAR005E may be issued if reconfigurable storage is present. You might want to check that you have the PTF for this APAR applied HTH Mike On Thu, May 5, 2011 at 5:16 PM, Chip Grantham cgrant...@ameritas.comwrote: There's a CPU hit ptf for *master* doing work on available frames queue. It might show up as a paging issue on your system. Might want to check it out. Chip Grantham | Ameritas | Sr. IT Consultant | cgrant...@ameritas.com 5900 O Street, Lincoln NE 68510 | p: 402-467-7382 | c: 402-429-3579 | f: 402-325-4030 Lizette Koehler stars...@mindspring.com Sent by: IBM Mainframe Discussion List IBM-MAIN@bama.ua.edu 05/05/2011 08:19 AM Please respond to IBM Mainframe Discussion List IBM-MAIN@bama.ua.edu To IBM-MAIN@bama.ua.edu cc Subject Re: Paging increase when going from z/OS 1.9 to 1.11 Hi, We are seeing a paging increase after upgrading to z/OS 1.11. Has anyone else seen this? TIA Gadi When we went from 1.9 to 1.11 we saw this effect. We were directed to a GRS PTF. I would open an ETR with IBM to see what other things they might have on this issue. This has helped to reduce our paging. Lizette -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html *** This message may contain confidential information intended only for the use of the addressee(s) named above and may contain information that is legally privileged. If you are not the addressee, or the person responsible for delivering it to the addressee, you are hereby notified that reading, disseminating, distributing or copying this message is strictly prohibited. If you have received this message by mistake, please immediately notify us by replying to the message and delete the original message immediately thereafter. Thank you. *** -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html -- -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: Paging increase when going from z/OS 1.9 to 1.11
Morning, Gadi. My (small) test system is still firmly at 0%, but my (larger, still not big) Prod system went from 0% to ~8%. Cheers,,,Steve Steven F. Conway, CISSP LA Systems z/OS Systems Support Phone: 703.295.1926 steve_con...@ao.uscourts.gov From: גדי בן אבי gad...@malam.com To: IBM-MAIN@bama.ua.edu Date: 05/05/2011 09:03 AM Subject: Paging increase when going from z/OS 1.9 to 1.11 Sent by: IBM Mainframe Discussion List IBM-MAIN@bama.ua.edu Hi, We are seeing a paging increase after upgrading to z/OS 1.11. Has anyone else seen this? TIA Gadi לשימת לבך, בהתאם לנהלי החברה וזכויות החתימה בה, כל הצעה, התחייבות או מצג מטעם החברה, מחייבים מסמך נפרד וחתום על ידי מורשי החתימה של החברה, הנושא את לוגו החברה או שמה המודפס ובצירוף חותמת החברה. בהעדר מסמך כאמור (לרבות מסמך סרוק) המצורף להודעת דואר אלקטרוני זאת, אין לראות באמור בהודעה אלא משום טיוטה לדיון, ואין להסתמך עליה לביצוע פעולה עסקית או משפטית כלשהי. Please note that in accordance with Malam's signatory rights, no offer, agreement, concession or representation is binding on the company, unless accompanied by a duly signed separate document (or a scanned version thereof), affixed with the company's seal. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
