What version of JES2 z/OS OS/390 are you running?
I am not sure an EXIT will process any faster than a command. JES2 is very
efficient in controlling its environment. If you are seeing High CPU
Utilization from JES2 it might be worth an ETR/SR to IBM to find out why.
Sometimes there are tuning that can be done to reduce the overhead.
Is your checkpoint data on a standalone volume
What kind of dasd are you using - EMC STK or IBM? Other?
How is your configuration setup?
How will your exit be any different than the command? They will most likely go
through the same or similar process flow inside of JES2. Will your exit have a
timer that will activate every so often? Will your exit just purge the job
immediately upon completion with a RC04 or RC00? If so, why not setup the JES2
Parm deck to just do that?
You may wish to look at coding the OUTDISP/OUTCLASS for various classes (Though
I am not sure if normal is any return code zero on up. So a RC04 may be
considered normal)
OUTDisp=([normal] [,abnormal])
Specifies the default output disposition for JES data sets created for jobs
in this class, depending on whether or not the job abended.
Or my favorite, set up an NJE Offloader to select based on your requirements
the output to tape/dasd that has a retention period of 1 day. Then just let
the tape fall off on a daily basis.
Lizette
> -----Original Message-----
> From: IBM Mainframe Discussion List [mailto:[email protected]] On
> Behalf
> Of Houzet Alain
> Sent: Tuesday, October 02, 2012 6:53 AM
> To: [email protected]
> Subject: Re: JES2 EXIT 40
>
> Why an exit and not a jes2 command to purge output ? because our issue
> concern the
> cpu consumption of jes2.
> Indedd with 35000 sysout by day, jes2 is the biggest consumer of cpu to
> handle his
> spool. We will prefer to purge the sysout from the source than send a purge
> command
> every x minutes.
> thank's
>
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