And those limits, as announced, are:
# Up to 80 processors per logical partition with z/OS V1.11 and later
on zEnterprise servers.
# Up to 60 LPARs on a single server with IBM zEnterprise System
(zEnterprise), IBM System z10 Enterprise Class (z10 EC), and IBM System
z9 Enterprise Class (z9 EC) servers.
Peter Relson wrote:
Has Z/os changed that number, if so what is the current number
before thruput either is not helped or there is a straight line
being nio help/no hurt ?
I believe that the answer is: a number no lower than the maximum number of
processors that z/OS (and the machine) documents that you may define to a
z/OS image.
That by no means implies that the incremental benefit for moving from say
31 to 32 processors is the same as the benefit for moving from 3 to 4.
If you have access to machines on which you can play, you could consider
checking out the MP CPU Capability adjustment factors returned by the STSI
instruction (CSRSI service).
<snip>
--
John Eells
z/OS Technical Marketing
IBM Poughkeepsie
ee...@us.ibm.com
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