On Sat, 2 Apr 2022 at 19:59, Tony Thigpen <[email protected]> wrote: > I have used ARs to get data from other VSE partitions (address spaces to > you z/OS guys). I am looking at a program that needs to 'snap shot' a > partition by copying a lot of data, then printing it. > > I have never used "move to primary" or "move with key" type instructions. > > Is there any performance, or other reason, I should look at these other > instructions? Or, should I just continue to use ARs?
In passing, these are not entirely either-or things. All the "move with key" type instructions will normally use the ARs if in AR mode just like any other instruction. MVCOS (MVC On Steroids - rumour has it that there are additional undocumented features) kind of rolls everything together and allows specification for each operand of whether the AR mode and/or key in the PSW is used, or one specified on the instruction. Tony H.
