On Monday, 11/07/2005 at 11:24 CST, "Nix, Robert P." <[EMAIL PROTECTED]> 
wrote:

> I was able to move the CP Directory off the RES volume, and placed it at 
the 
> head of the paging volume. 

Eeeeewwwwww!  In general, volumes should be dedicated to paging, not mixed 
with other data.  If you must share the volume, ensure the other data is 
rarely, if ever, accessed.

CP starts a never-ending channel program on the paging volume to handle 
paging.  If something else needs to be read or written, then the channel 
program is stopped, the other I/O is performed, and then the channel 
program is re-started.  If you're doing a lot of paging, that's going to 
hurt.

Alan Altmark
z/VM Development
IBM Endicott

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