Un-related to new z/OS release - I would check relative MVS priority of CICS main TCB (QR) where the CICS dispatching is done -
to be higher that other L8/L9/etc.. TCBs in CICS address space.. Shmuel Koller ________________________________ From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of Jim Marshall Sent: Tuesday, February 27, 2007 10:38 PM To: IBM-MAIN@BAMA.UA.EDU Subject: z/OS V1R8 WLM & CICS Performance Observation We run CICS TS & ADABAS and saw some performance issues with CICS transactions in z/OS V1R7 although not very bad. When we brought up z/OS V1R8 we are seeing high level of delays in CICS transactions when they are going to "redispatch" queue. Talking to IBM lab folks they are telling us it is not a z/OS V1R8 problem but maybe a CICS performance problem. But then the CICS people say the transactions are not being dispatched quick enough off the redispatch queue. I think this has been shuffled over to the WLM folks. Like to know if anyone else is encountering CICS performance problems where it seems the CPU is running 100%, transactions start queueing up, repsonse gets slow, CPU drops down to 50-60%, redispatch queue gets bigger and then all them transactions come out at once and FLY through the system. Is this happening to you or has it happened lately. thanks Jim ---------------------------------------------------------------------- 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 ---------------------------------------------------------------------- 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
