Could it be VIO?

Len Rugen

"In theory, there is no difference between theory and practice. But in
practice, there is." 
- Yogi Berra 


-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On
Behalf Of james smith
Sent: Saturday, July 26, 2008 6:42 AM
To: IBM-MAIN@BAMA.UA.EDU
Subject: Paging Question

This is the kind of question that should be easy to find the answer. But
the
obvious places do not provide it. Also I feel I should know the answer
but
have forgot - getting old!

We have page datasets with 40% allocated slots. We do not page (have
lots of
free memory). D ASM,ALL

But the allocated slots is less that the sum of all the address spaces.
When is space allocated on a page dataset. I was thinking when virtual
storage is requested. But this contradicts the process of spreading
several
pages across page datasets during page out

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