Defining limits

Now that the resource usage numbers are known, we can customize the limiting directives with appropriate values.

• /etc/zexpl/rse.env
  • Xmx512m
    not changed
  • Dmaximum.clients=25
  • Dmaximum.threads=420
  • Dminimum.threadpool.process=10

    This change is optional; RSE will start new thread pools as needed

  • DDSTORE_USE_THREADED_MINERS=true
  • DHIDE_ZOS_UNIX=true
  • DDSTORE_IDLE_SHUTDOWN_TIMEOUT=10800000
• FEK.#CUST.PARMLIB(FEJJCNFG)
  • MAX_THREADS=574
• SYS1.PARMLIB(BPXPRMxx)
  • MAXPROCSYS(2000)
    1081 minimum, added extra buffer for tasks other than z/OS® Explorer
  • MAXPROCUSER(100)
    66 minimum, added extra buffer in case the RSE thread pools
    support less than the projected 25 clients
  • MAXTHREADS(1500)
    must be minimum 574 for JES Job Monitor,
    which has the highest maximum thread count (STCRSE has 536)
  • MAXTHREADTASKS(1500)
    must be minimum 574 for JES Job Monitor,
    which has the highest maximum thread count (STCRSE has 536)
  • MAXUIDS(700)
    502 minimum, added extra buffer for tasks other than z/OS Explorer
  • MAXASSIZE(209715200)
    not changed (200 MB system default), we use ASSIZEMAX in the OMVS
    segment of user ID STCRSE
• SYS1.PARMLIB(IEASYSxx)
  • MAXUSER=2000
    551 minimum, added extra buffer for tasks other than z/OS Explorer
• OMVS segment of user ID STCRSE
  • ASSIZEMAX(2147483647)
    2 GB