On 5/4/2023 9:14 PM, Ed Jaffe wrote:
Approximately 128 bytes average saved for each additional sub-module involved...
Actually, the above was my average savings across the whole library calculated by pasting the ISPF member display into an Excel spreadsheet and using HEX2DEC to convert the values to decimal.
Looking only at the "modules within modules" case, the best example was a module that contains 61 sub-modules linked together. Original size: 0A94B0. Size with COMPAT=ZOSV2R1: 08DEA8. Total savings = 109K or ~1.8K per sub-module.
So, if you use SECTALGN(16) or higher -- needed to use LQ constants, etc. -- and have modules consisting of many separately-assembled parts, the savings can be substantial.
It sure would be nice if the binder and module fetch could quad-align (or higher power of two) a load module without forcing it to be 4K page aligned.
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