I tend not to worry about performance, but any way I believe that IBM current advice is don¡¯t try and instruction timings disappeared from the manuals yonks ago¡
For example early 9370 were especially bad on non-aligned instructions, but modern hardware doesn¡¯t give a jot. I suppose it might be nice to try it on the P390 but still trying to re-write a web sit ¡
Because I did not remember that MVCL was available at the 370 architecture level (and failed to go look it up) and because MVCL has mostly been quite slow at the real-iron hardware level.
?
Of course, Hercules might do MVCL relatively better than the real iron.
