ca.portal.admin

Re:question about numbered user exits

Discussion created by ca.portal.admin on Oct 18, 2010
I am reading Chris Hoelscher's article on z/IIP exploitation in
the September 2010 ""IUA Connections"" with great interest as our
site experienced the problem that he describes. Chris
indicates that the numbered user exits can contribute to
TCB/SRB swapping. We use exit 28 (security pre-processing) and
I am wondering if this could account for some of the high
swapping rate that we saw.

Here is my question: Is there any way to determine how many
times a numbered user exit is actually being executed?

Kay Rozeboom
State of Iowa
Information Technology Enterprise
Department of Administrative Services
Telephone: 515.281.6139 Fax: 515.281.6137
Email: Kay.Rozeboom@Iowa.Gov
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Re: question about numbered user exits
"I bet you couldn't measure it even with an electron microscope. Unless
your program pool is so small that you have to physically reload it.
Make it resident and I defy you to measure the performance degradation
in the grand scheme of things.=20

I profit from all Lutz's list of advantages and have done for many
years. I wouldn't link a user exit in Test. I might just in production
but I never have.

Chris trayler

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