> -----Original Message----- > From: IBM Mainframe Discussion List > [mailto:[email protected]] On Behalf Of Barbara Nitz > Sent: Monday, September 07, 2009 12:25 AM > To: [email protected] > Subject: Re: How often IPL a production LPAR (any good practice) > > > From what I can tell, IBM has resolved most of the > CPU/storage creeps > >that caused the increase in CPU time as time elapses from the last > >IPL. > > With the big exception of all the newfangled stuff like > Websphere application > server and everything java. *That* stuff needs a weekly IPL > in order to clean > up the nonsense the Java programmers do. Otherwise you're in > for *a lot* of > cpu usage.
I'm confused, as usual <grin>. What in WAS requires an IPL to solve? Wouldn't recycling the WAS address space be sufficient? We are so old fashioned that we are still CICS/COBOL/VSAM for almost everything. 1970s era programming except for a few things in CICS which talk XML via TCPIP. > > And NetView also had/has(?) a problem when it's up too long. > IBM support is > kinda baffled by that one.... > > > From a performance analyst's point of view, if I had a constrained > >system, I would also review any New Function APARs. These often > >provide very significant performance improvements. > > And introduce significant new problems. Here we are very wary of new > functions, as we have been burned before, a lot more than by the > performance problem! > > Best regards, Barbara Nitz -- John McKown Systems Engineer IV IT Administrative Services Group HealthMarkets(r) 9151 Boulevard 26 * N. Richland Hills * TX 76010 (817) 255-3225 phone * (817)-961-6183 cell [email protected] * www.HealthMarkets.com Confidentiality Notice: This e-mail message may contain confidential or proprietary information. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message. HealthMarkets(r) is the brand name for products underwritten and issued by the insurance subsidiaries of HealthMarkets, Inc. -The Chesapeake Life Insurance Company(r), Mid-West National Life Insurance Company of TennesseeSM and The MEGA Life and Health Insurance Company.SM ---------------------------------------------------------------------- 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
