On 5/22/07 9:36 AM, "Dave Jones" <[EMAIL PROTECTED]> wrote:
> While it might be nice if Linux, running on an IFL, could dispatch a
> Java process on a zAAP, it is not a requirement. I would think the
> performance gain might be worthwhile, especially if the Linux guest was
> running Websphere.
>
Actually, there's really no good reason to do so. The zAAP engine would have
to be shared between z/OS and z/VM, watering down its performance and
usefulness for both, and z/VM would benefit more from an additional IFL
which could be shared among all its workload than the zAAP which is isolated
to just Java.
There is no cost benefit for supporting zAAPs on z/VM. (Again, discounting
the miserly sharing of the resource instead of dedicating it to z/OS).
Ultimately, the z/OS folks would not recognize the usefulness of the zAAP,
since it wouldn't effectively address their workload well, and it would
likely be dropped in favor of a real CP, leaving z/VM without.
Keep z/OS and z/VM separate, and budget what you need for both; otherwise,
the penny saved will come back at you as dollars wasted.
--
.~. Robert P. Nix Mayo Foundation
/V\ RO-OE-5-55 200 First Street SW
/( )\ 507-284-0844 Rochester, MN 55905
^^-^^ -----
"In theory, theory and practice are the same, but
in practice, theory and practice are different."
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