So, Bill, are you saying that in almost all cases, we should use no more than 2GB
of extended storage. What happens when the 2GB is exceeded?
Thanks,
Steve G.
| Bill Bitner <[EMAIL PROTECTED]>
Sent by: The IBM z/VM Operating System <[email protected]> 08/24/2006 07:00 PM
|
To: [email protected] cc: Subject: Re: Storage Configuration |
We are recommending for z/VM 5.2.0, 25% of processor memory be
defined as xstore up to a max of 2GB (that is no more than 2GB).
This is our rule of thumb. This seems sufficient in most cases to
buffer active guests from idle guests suddenly becoming active and
bringing in entire working sets. Also allows pages to be moved out
to DASD based on 2 levels of LRU, the xstore one being time stamped.
Bill Bitner - VM Performance Evaluation - IBM Endicott - 607-429-3286
