McKown, John wrote:
No. a zAAP can only be used by a z/OS system. Not z/VM, z/Linux, z/VSE, or z/TPF.
That's what I get for "jumping in" without reading the thread. Yes. zAAP works only with Java code running under z/OS ... not Linux for z or other operating systems.
I question the premise of this entire thread. System z CPU performance is not poor! It's state of the art technology!
When comparing the CPU consumption of z/OS traditional workloads vs Java or anything running under Linux for z, it can seem as if the CPU is too slow for those "new" workloads. But what you're really observing is another phenomenon altogether...
The roots of the z/OS operating system, middleware, ISV products, and applications are decades old and *highly* efficient. (Much of it still written in assembler language.) Remember, these systems ran reasonably well on processors with MIPS ratings in the single digits! Therefore, the CPU you purchase to run traditional z/OS workloads doesn't need to be very powerful at all compared to the CPU you need to run a Java- or Linux for z-based workloads, which are written in C and C++ to an entirely different design point.
The z9EC zAAPs and IFLs are 580 MIPS engines. Any "new" workload utilizing a sufficient number of those processors should perform quite well.
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