On 18/05/2022 3:53 pm, Timothy Sipples wrote:
So over roughly 25 years it’s been about 3.5 to 98 PCIs as the minimum
available CP configuration, or about a 28X increase.
I did say "a small" system in the 1990s, not the smallest available. But
your 28X illustrates the point. Over the same period, other platforms
have increased what, 1000X? More?
Another 20X on top of your 28X for the minimum system would put it
around 600X and maybe 300MSU which would be much more usable. Everything
has multiple CPUs now which solves many performance problems, so I don't
think you want less than 4. And if z/OSMF started 20X faster (90s
instead of 30 minutes) on small systems, you would have a lot less
complaints about it.
IBM generally recommends configuring at least one zIIP if you run z/OS. zIIPs
are (or were) available for all of these models and also for the z9BC.
zIIPs are a great marketing point for my product which is written in
Java (as long as the customer has them), but they are just a workaround
for the restricted capacity of the GCPs.
Andrew Rowley
Black Hill Software
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