Flagship? I thought that was Linux on Z. Why doesn't z/OS have, e.g., ANSI REXX, NTP, OOREXX, various compilers ubiquitous in the *ix world? Why does STP cost extra?
-- 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, May 18, 2021 5:12 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: How can I tell the zFS files being used by my application On 18/05/2021 1:52 am, Kirk Wolf wrote: > > - good low-overhead (sampling) profiling tools for the z/OS JVM don't > exist (maybe this has changed?). IMO this was a huge barrier for > Java on z/OS. Unfortunately, othing has changed :( z/OS only partially supports the JVMTI implementation. Hopefully, now IBM/OpenJ9 is open source the Java tooling landscape will improve. RedHat supports Flight Record in their OpenJDK distros and IMO z/OS should at the very least have the same. I say again, Java on z/OS needs a lot more love then it's currently getting. z/OS is supposed to be the flagship IBM OS. We've started to introduce Kotlin to modernize our tooling as IBM are too slow updating Java versions on z/OS. So far it's been a success. Kotlin adds some runtime overhead due to additional boilerplate code but it's well worth it. Null safety, no checked exceptions and type safe builders alone are a good enough reason to start transitioning, albeit slowly. > > - Sometimes CPU costs don't matter where time to market or > functionality are more important or where the application doesn't run > that much. Agreed. And I suppose that was Andrew's point. If his Java product can run quick enough as a batch utility then happy days. If it runs like a stallion on a zIIP :two-thumbs-up: ---------------------------------------------------------------------- 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
