NORENT is the option that tells the EP compiler to do the same
that all the "old" compilers did, that is, put the static variables in
the STATIC CSECT. If the program is reentrant or not, depends on
the programmer; if he or she changes static variables during execution,
the program will not be reentrant.
With option RENT (inherited from C++), the program is made
artificially reentrant, even if the static variables are changed.
RENT was the only option in the first versions of EP PL/1, but it is
now not recommended any longer.
See these older discussions on ASSEMBLER-L:
http://bernd-oppolzer.de/blog_20100605_145144.htm
http://bernd-oppolzer.de/blog_20100605_155102.htm
http://bernd-oppolzer.de/blog_20100606_022547.htm
http://bernd-oppolzer.de/blog_20100606_084424.htm
http://bernd-oppolzer.de/blog_20100606_132541.htm
Kind regards
Bernd
Am 24.02.2015 um 12:47 schrieb Elardus Engelbrecht:
Warning: My PL/1 skills are really decayed...
Beesley, Paul wrote:
Our customer has been trialling Enterprise PL/1 4.4, with the intention of
upgrading from their current compiler, PL/1 for MVS&VM.
At what level of z/OS, VM, Language Environment and CICS?
They have issues with performance, particularly with CICS programs, where the CPU
time of a transaction is 3 times what it was with PL/1 for MVS&VM.
With specific transactions or all transactions? With all or some CICS regions?
We have a PMR open with IBM, who suggested the NORENT option, which did reduce
the CPU to just double the old value.
NORENT? Hmmm, I think it is something how your programs are linked or combined
with CICS and CICS programs.
Based on what is IBM suggesting NORENT?
Groete / Greetings
Elardus Engelbrecht
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