RE: How does it really work?

When you have two cores, that is all that would be in your processor pool,
so that is all you get.

If You have one processor pool with two processors in it, and all 3
partitions use the pool, then the machine would give out the 10% from the
pool (therefore there would be twenty .10 slots to be given to the 3
partitions based upon your profile's processor requirements you define).

Now, of course you can run uncapped which if one of the LPAR's wasn't using
their slots, they could be given to the other LPARs.

You could also have two processor pools with one pool each, and if you gave
LPARB & LPARC the same pool, they would only share that processor 1/2 each
in your example, unless you gave it uncapped.

Pete



Pete Massiello
iTech Solutions
http://www.itechsol.com

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-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Kirk Goins
Sent: Wednesday, June 15, 2011 11:49 AM
To: Midrange-L
Subject: How does it really work?

Totally just for the heck of it...

It is my understanding that if I have a dual core system, I could create 20
LPARs of .1 processor/core each.
The system basically divides some unit of time by 10 and assigns 1 unit of
the resulting time per 10th of processor assigned.
On a single LPAR ( no LPAR ) box all time slots would be available. If I
assign say '1' core to LPAR A and '.5' each to LPARs B and C
LPAR A would get 10 time slots and B and C would each get 5 time slots.

First Question, with the HW above does LPAR A only use time slots from a
specific core or does the system handout time slots from both cores?
Second Question on a 6core system with only 2 cores licensed for IBM i and
no other workloads ( OSes ) on the system, is it spreading those time slots
across all six cores or just 2?

Just curious