Rational Developer for System z
Enterprise COBOL for z/OS, Version 4.1, Compiler and Runtime Migration Guide


Virtual storage information for non-CICS

Table 1 shows how much virtual storage is used when a simple VS COBOL II program compiled with RES was run on z/OS. In each case, the runtime library routines were acquired from STEPLIB:

Table 1. Virtual storage used by a VS COBOL II RES program on non-CICS
Runtime library Modifications from IBM default Below 16-MB virtual storage Above 16-MB virtual storage
VS COBOL II, Release 4 None 276K 4K
VS COBOL II, Release 4 COBPACKs modified to run above the 16-MB line 32K 192K
Language Environment element of z/OS, Version 1 Release 7 None 88K 2636K
Language Environment element of z/OS, Version 1 Release 7 Runtime options ALL31(OFF) and STACK(BELOW) 280K 2504K

When comparing the amount of virtual storage used by the Language Environment run time and pre-Language Environment run times, note that runtime routines accessed from the LPA or ELPA are not included in the virtual storage used by the job.


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