Herman, Thanks for the response. The files in question are VSAM. I will re-check the migration guide for info.
_________________________________________________________________ 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 -----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Stocker, Herman Sent: Thursday, August 13, 2009 1:13 PM To: [email protected] Subject: Re: Degraded I/O performance in 1.10? Hi David, Look into increasing the buffers VSAM index. Some catalog changes have occurred that may be the cause of your slow response. Also SMF and Logrec buffering. Regards, Herman Stocker -------< snip>------- All, I realize this is a really open ended question. We completed our 1.8 to 1.10 upgrade in June, with no known problems. Everything seems to be running fine. However, I have various people(mostly developers) occasionally complaining that they "think" the system is slower since the upgrade. Of course, the upgrade gets blamed for everything. By slower, the are referring to their batch jobs, those that do a lot of I/O. Interestingly, several people, who do not work in the same area(and most likely do not talk to each other), asked if file buffering has changed somehow with the upgrade. I tell them, not that I am aware of, and ask them for specifics to research, and in most cases I compare the jobs running before and after the upgrade, and the EXCPs all seem to be inline. So, all I can say is that there is this gut feeling that something isn't quite right, but can't put a finger on it. Has anyone else noticed anything, or have idea's on what to look for? _________________________________________________________________ Dave Jousma -------</snip>------- The sender believes that this E-mail and any attachments were free of any virus, worm, Trojan horse, and/or malicious code when sent. This message and its attachments could have been infected during transmission. By reading the message and opening any attachments, the recipient accepts full responsibility for taking protective and remedial action about viruses and other defects. The sender's employer is not liable for any loss or damage arising in any way from this message or its attachments. ---------------------------------------------------------------------- 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 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
