On Mon, 12 Aug 2019 20:48:18 -0400, Brian Chapman <bchapma...@gmail.com> wrote:

>Hi everyone,
>I did some searching, but I didn't find anything that really discussed this
>on the topic that I'm interested. Is there anything published that compares
>the cycle times of the most used instructions?
>For example; moving an address between areas of storage. I would assume
>that executing a LOAD and STORE would be much quicker than executing a MVC.
>Or executing a LOAD ADDRESS to increment a register instead of ADD HALF
>Or does this really matter as much as ordering the instructions so they are
>optimized for the pipeline?

There used to be, with every new IBM System/360 machine, a "Functional 
Characteristics" publication stating "Instruction Times" in microseconds.
Here is one for the IBM System/360 Model 85:


See page 27.

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