1. Run the following JCL:
//STEPHARD EXEC PGM=BPXBATCH,REGION=0M
//STDPARM DD *
SH ulimit -a
//SYSPRINT DD SYSOUT=*
//STDERR DD SYSOUT=*
//SYSOUT DD SYSOUT=*
//SYSPRINT DD SYSOUT=*
Example STDOUT:
core file unlimited
cpu time 86375
data size unlimited
file size unlimited
stack size unlimited
file descriptors 64000
address space 1870824k
memory above bar 17592186040320m
a) spice this up by using different REGION=x sizes to see the difference
b) doubly spice this up by adding this to the bottom of the JCL:
//STDENV DD *
_CEE_RUNOPTS=RPTSTG(ON),RPTOPTS(ON)
/*
STDERR on my system now has (1) a listing of all of the default LE run time options, and (2) storage report information such as STACK and HEAP sizes
2. This EXEC I shamelessly stole from the IBM-MAIN listserver group - works just great out in TSO or inside OMVS:
/* REXX *** */
IF SYSCALLS('ON')>3 THEN
DO
SAY 'Unable to establish the SYSCALL environment'
SAY 'Return code was 'RC
RETURN
END
ADDRESS SYSCALL
/* display current limits for OMVS resources */ Say 'Maximum amount of CPU =
time (in seconds) used by a process.'
CALL dolim 'rlimit_cpu'
Say 'Maximum files size (in bytes) created by a process.'
CALL dolim 'rlimit_fsize'
Say 'Maximum number of open file descriptors for a process.'
CALL dolim 'rlimit_nofile'
Say 'Maximum address space size for a process.'
CALL dolim 'rlimit_as'
Say 'Maximum size (in bytes) of a core dump created by a process.'
CALL dolim 'rlimit_core'
exit 0
dolim: ,
arg v .
/* return current limits for resource */
num=value(v)
"getrlimit "num" rv."
SAY 'Resource='v'('num') current='rv.1 'maximum='rv.2
Say ' '
return
Produces output that looks like this:
Maximum amount of CPU =time (in seconds) used by a process.
Resource=RLIMIT_CPU(0) current=2147483647 maximum=2147483647
Maximum files size (in bytes) created by a process.
Resource=RLIMIT_FSIZE(1) current=2147483647 maximum=2147483647
Maximum number of open file descriptors for a process.
Resource=RLIMIT_NOFILE(6) current=64000 maximum=64000
Maximum address space size for a process.
Resource=RLIMIT_AS(5) current=1033412608 maximum=2147483647
Maximum size (in bytes) of a core dump created by a process.
Resource=RLIMIT_CORE(4) current=2147483647 maximum=2147483647
Ed
