On Mon, 4 Feb 2008 22:53:01 +0000, Ted MacNEIL wrote:

>>The hipervisors will need to be at pains to redispatch guests on same engine
(s) where possible - probably do already.
>
>1. PR/SM does try to re-dispatch on the same CP.

Yes.

>2. The cache is global (IIRC) and each entry is tagged with the LPAR, as well 
as the data.

There is cache on each PU as well as on each MCM.  The level 1 cache on the 
PU is not used by other PUs.

>3. Cache ages as the whole processor requires it, not by LPAR.
>4. MDF partitioned the cache; LPAR doesn't, since the 9672, according to my 
contacts within IBM.

I don't remember MDF partitioning the cache.  Indeed, part of the reason for 
the way the domain dispatcher was designed was to limit the effects of one 
doamin impacting the cache of the others.

-- 
Tom Marchant

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