What about Java? How well does JIT work? The gold standard for REXX is ooRexx, but IBM has not seen fit to integrate it into z/OS or z/VM.
However, for off the shelf package libraries, Perl and Python are admittedly ahead of REXX. What are the Python and Ruby equivalents of CPAN? I've found extending REXX for CMS and TSO to be easy, although admittedly assembler is mothers' milk to me and I didn't have to deal with LE issues. -- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 ________________________________________ From: IBM Mainframe Discussion List [IBM-MAIN@LISTSERV.UA.EDU] on behalf of David Crayford [dcrayf...@gmail.com] Sent: Tuesday, February 28, 2023 12:47 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: zOSMF and zOWE for non-mainframers On 25/2/23 01:23, Farley, Peter wrote: > Python on the mainframe is pretty good, but still can't beat out Rexx in > performance even when the Rex script needs to use BPXWUNIX and friends to > access z/OS Unix file systems, > I have conducted a series of benchtests, and the results suggest that REXX is not as fast as Python. In my testing, I compare the performance of C, Lua, Python, and REXX, and the results are clear: C is the fastest, followed by Lua, which is within an order of magnitude of C. Python comes next, within an order of magnitude of Lua, and REXX consistently performs the poorest. In addition to the performance factor, the vast Python ecosystem compared to the limited options available for REXX also make it an easy decision. Python is also simpler to extend with packages, while REXX requires more effort and potentially complex steps, such as using modern libraries that require Language Environment (LE). ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
