From: Raj Atwal (atwalrs@YAHOO.COM)
Date: Tue May 13 2003 - 13:43:33 EDT
I need to spec out a p630 for LPAR consolidation. I dont have my LPAR course notes handy with me right now and I cant find a definitive way to calculate the memory overhead for my config, so was hoping somebody on the list can help.
I want to configure 4 lpars on the p630, 3 lpars with 1GB of memory and 1 lpar with 2gb, so a total of 5gb memory. Now what is the LPAR memory overhead in addition....?
I calculate that the TCE tables wil require 256mb, the hypervisor 256mb, and each lpar will require 256mb for Partion page tables (256 X 4=1024mb). So I have total overhead at 1.5gb. Is this correct? I am not sure if the hypervisor is allocated per partition or not or if I can share the partiton page table PMBs for multiple partitions.
TIA
Raj Atwal
______________________________
Raj Atwal
Senior Systems Consultant
Braegen Group
Toronto, ON, Canada
(416) 366 6363
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