Lionel, STEPLIB=none has been around for a long time, and I see it documented, for example, in the V1R13 z/OS UNIX Planning book.
Can you offer any more details as to where the performance is bad or how you notice? I would assume that what you are describing is something relative to the time required to do a fork/exec or spawn. Which? local spawn? On Wed, Dec 11, 2019 at 2:04 PM Lionel B Dyck <[email protected]> wrote: > Found one major issue - the systems where the issue is are z/OS 2.1 and the > STEPLIB=none variable looks to have been new in 2.2. Reducing the STEPLIB > and ISPLLIB solved things. > > > Lionel B. Dyck <sdg>< > Website: http://www.lbdsoftware.com > > "Worry more about your character than your reputation. Character is what > you are, reputation merely what others think you are." - John Wooden > > -----Original Message----- > From: IBM Mainframe Discussion List <[email protected]> On Behalf > Of > Lionel B Dyck > Sent: Wednesday, December 11, 2019 12:58 PM > To: [email protected] > Subject: OMVS Tuning ? > > I am working on a project where the omvs performance on some systems is > slower than one would like -definitely not sub-second. > > > > I'm looking for tuning suggestions. > > > > When under ISPF the elapsed time is more than double the elapsed time when > in native TSO. > > > > Note that the OMVS environment includes STEPLIB=none but my guess is that > the ISPLLIB may be the culprit when under ISPF - I just can't prove that > (yet). > > > > Thanks for any guidance. > > > > > > Lionel B. Dyck <sdg>< > Website: <http://www.lbdsoftware.com/> http://www.lbdsoftware.com > > "Worry more about your character than your reputation. Character is what > you are, reputation merely what others think you are." - John Wooden > > > > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, send email > to [email protected] with the message: INFO IBM-MAIN > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN > ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
