>Anyone have experience if we turn off the XREF, MAP options. Will it
>improved the overall complie job performance?

The answer has got to YES and the question is how much does it help. I 
have gone through COMPILES PROCs and looked to turn off anything not 
needed to actually output a compile. If this is just to find errors, I 
would suggest looking at SYNTAX to do a syntax check of the code. Then 
when they are ready to do the final Compile & Link, then they would use a 
different PROC.

Syntax checking It will automatically turn off many, many options and runs 
real FAST. For COBOL, I wrote an ISPF panel for users to interactively 
compile (actually syntax check) by linking off to the COBOL compiler and I 
turned off everything which generated any kind of list, table, XREF, etc; 
this was beyond what the syntax check turned off. Then I put the output of 
the errors only into a TEMP file to browse. There is little overhead and 
people get to see their errors interactively. In general I did the same 
thing for Assembler and FORTRAN. Although ASM & FORTRAN don't have a 
syntax check, by turning off everything including creating the object 
module or deck, it runs very, very fast. I sent the code to the CBT tape 
as my Tool Chest a few years ago. It still works today. If you can not 
find it, let me know. 

Jim Marshall 

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