Thanks, everyone. We are running z/OS v2.1, just upgraded from z/OS v1.12. Over the weekend, I add a second structure to the CLASSDEF SML. Hopefully, that will help with the issues.
Thanks again, Jerry ________________________________ From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> on behalf of Michael Babcock <bigironp...@gmail.com> Sent: Sunday, May 3, 2020 12:43 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: z/OS performance question This message was sent from an external source outside of Western & Southern's network. Do not click links or open attachments unless you recognize the sender and know the contents are safe. ________________________________________________________________________________________________________________________ If you are on z/OS 2.4 you don’t need to tune the classes. Just turn on auto tuning. On Fri, May 1, 2020 at 1:44 PM Edgington, Jerry < jerry.edging...@westernsouthernlife.com> wrote: > Thanks Allen, that is good place to start. The CPU% for the ISGLOCK, > IXCSTR1 and IXCSTR2 are 58%, 74% and 21%, which seem very high to me. But, > the IXCSTR3 and IXCSTR4 are very low. It would seem I might have an > imbalance with the XCF messages and size. Async rate for IXCSTR1 is 120 > > I am wondering if I need to adjust my CLASSDEF CLASSLEN size for each of > the structures. We are running ICFs on GP, with one virtual connection to > each ICFA/B. Not ideal, but all I could do at the moment. > > > /* TRANSPORT CLASSES. */ > CLASSDEF CLASS(SML) CLASSLEN(956) GROUP(UNDESIG) > CLASSDEF CLASS(MED) CLASSLEN(8000) > CLASSDEF CLASS(DEFAULT) CLASSLEN(16316) > CLASSDEF CLASS(BIG) CLASSLEN(32000) > > /* XCF STRUCTURES */ > PATHOUT STRNAME(IXCSTR1) CLASS(SML) > PATHOUT STRNAME(IXCSTR2) CLASS(MED) > PATHOUT STRNAME(IXCSTR3) CLASS(BIG) > PATHOUT STRNAME(IXCSTR4) CLASS(DEFAULT) > /* */ > PATHIN STRNAME(IXCSTR1,IXCSTR2,IXCSTR3,IXCSTR4) > > Also, we have: > FUNCTIONS ENABLE(DUPLEXCF16, SYSSTATDETECT, CRITICALPAGING) > > Thanks Jerry > > > -----Original Message----- > From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> On Behalf > Of Allan Staller > Sent: Friday, May 1, 2020 2:32 PM > To: IBM-MAIN@LISTSERV.UA.EDU > Subject: Re: z/OS performance question > > This message was sent from an external source outside of Western & > Southern's network. Do not click links or open attachments unless you > recognize the sender and know the contents are safe. > > ________________________________________________________________________________________________________________________ > > The only tuning I a aware of for XCF is to provide appropriate transport > classes for the messages being passed. If inappropriate, this will usually > show up as CPU concumption in the XCFAS address space. Look at the CPU > consumed, not the delay. > > It is possible that this is contributing to the CICS delays. GRS will use > XCF if available. > > -----Original Message----- > From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> On Behalf > Of Edgington, Jerry > Sent: Friday, May 1, 2020 12:30 PM > To: IBM-MAIN@LISTSERV.UA.EDU > Subject: z/OS performance question > > [CAUTION: This Email is from outside the Organization. Unless you trust > the sender, Don’t click links or open attachments as it may be a Phishing > email, which can steal your Information and compromise your Computer.] > > To anyone, > > I am not a performance person at all, but can someone help me with > pointing me in the right direction. We are running a small SYSplex, but we > are getting delays on one LPAR, PROC-XCFAS > > *SYSTEM PROC-XCFAS 3.7 users > ALL STC PROC-XCFAS 3.2 users > IMS PROC-XCFAS 26.0 % delay > RMF PROC-XCFAS 18.0 % delay > RMFGAT PROC-XCFAS 21.0 % delay > IMSCTL PROC-XCFAS 25.0 % delay > TN3270 PROC-XCFAS 28.0 % delay > VTAM PROC-XCFAS 19.0 % delay > > Also, we are ACF2 shop and our production CICS regions are getting delays: > > ENQ -ACFVSAM 38.0 % delay LOGONIDS > ENQ -ACF2ACB 100.0 % delay LOGONIDS > > So any help would be great. > Thanks, > Jerry Edgington > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, send email > to lists...@listserv.ua.edu with the message: INFO IBM-MAIN > ::DISCLAIMER:: > ________________________________ > The contents of this e-mail and any attachment(s) are confidential and > intended for the named recipient(s) only. 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Before > opening any email and/or attachments, please check them for viruses and > other defects. > ________________________________ > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, send email > to lists...@listserv.ua.edu with the message: INFO IBM-MAIN > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN > -- Michael Babcock OneMain Financial z/OS Systems Programmer, Lead ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
