> -----Original Message----- > From: IBM Mainframe Discussion List On Behalf Of Hal Merritt > > > Interesting. One also has to wonder about scalability. Even small differences in resources can add up > pretty quick under high volumes. Did you see any evidence on how this might shake out?
No; and since it was a (very) informal comparison, mainly just to "get a feel" for running Java in CICS, we didn't really look for any. And at the time we didn't have any Java programmers who knew anything about "the mainframe" (let alone CICS). A couple of our COBOL wizards basically just copied an example or two from an IBM Redbook, and I set up the JVM profiles from the same Redbook. -jc- > > > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Chase, John > Sent: Thursday, July 15, 2010 2:12 PM > To: [email protected] > Subject: Re: Cobol vs Java - who is faster? > > > -----Original Message----- > > From: IBM Mainframe Discussion List On Behalf Of Itschak Mugzach > > > > As expected, I believe. But did the second run was faster as the JVM > was > > loaded? What is the ratio? > > Best I can recall, we compared the timings after the JVM was built > (first invocation of the Java txn took about 5 seconds; pretty much > sub-second after that). The COBOL was just enough faster to be > noticeable at the terminal. The txn retrieved and displayed one record > from a VSAM KSDS. Best recollection from TMON data is that the COBOL > ran about 20% - 30% faster than the Java. > > -jc- > > > NOTICE: This electronic mail message and any files transmitted with it are intended > exclusively for the individual or entity to which it is addressed. The message, > together with any attachment, may contain confidential and/or privileged information. > Any unauthorized review, use, printing, saving, copying, disclosure or distribution > is strictly prohibited. If you have received this message in error, please > immediately advise the sender by reply email and delete all copies. > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: GET IBM-MAIN INFO > Search the archives at http://bama.ua.edu/archives/ibm-main.html ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
