So I understand mainframes process data in batches. With millions of transactions per second, how is the frontend getting the most up to date data if the next batch hasn't run?
I am working with an application that runs on tomcat in OMVS. It run terribly on one mainframe, and adequately another another. Is there a way I can compare the CPU of the two mainframes as a reference?
I tried:
/d m=cpu
I didn't find the results very promising. The results seemed to be the same for our mini and our main system. I would assume the mini is actually more limited.
Note: I am looking more for CPU processing power on this particular LPAR.
GC_
I am looking for some publicly available comparisons between 2.5 inch drives and 3.5 inch drives. What I had assumed is that a 2.5 inch 15k drive and a 3.5 inch 15k drive would have identical performance, however I was shown some benchmarks recently claiming that 2.5 inch 15k is considerably faster, and 10k 2.5 inch is about the same speed as 15k 3.5 inch. The problem is that these benchmarks can't be reproduced by most people because of the platform they were done on, and more to the point, it's the underlying disk that I was hoping to compare.
Basically, will a mainframe using some number of 3.5 inch 15k drives right now perform about the same as a mainframe using an identical setup of 10k 2.5 inch drives?
Is mainframe administration still a viable field to go into? And if it is where would you get started on learning how to administer and program against a mainframe?