IDENTIFICATION DIVISION.
      *> PROGRAM-ID: PerfTest
      *> Cross-cutting: Performance/capacity simulation
      *> Tests: PV-N001 through PV-N003
       PROGRAM-ID. PerfTest.
       ENVIRONMENT DIVISION.
       INPUT-OUTPUT SECTION.
       FILE-CONTROL.
           SELECT PERF-FILE ASSIGN TO "perfdata.dat"
               ORGANIZATION IS SEQUENTIAL
               ACCESS MODE IS SEQUENTIAL
               FILE STATUS IS FS-PERF.
           SELECT SORT-FILE ASSIGN TO "perfsort.tmp".
           SELECT SORTED-FILE ASSIGN TO "perfsorted.dat"
               ORGANIZATION IS SEQUENTIAL
               ACCESS MODE IS SEQUENTIAL
               FILE STATUS IS FS-SORTED.
       DATA DIVISION.
       FILE SECTION.
       FD PERF-FILE.
       01 PERF-REC.
          05 PERF-KEY           PIC 9(06).
          05 PERF-DATA          PIC X(24).
       SD SORT-FILE.
       01 SORT-REC.
          05 SORT-KEY           PIC 9(06).
          05 SORT-DATA          PIC X(24).
       FD SORTED-FILE.
       01 SORTED-REC.
          05 SORTED-KEY         PIC 9(06).
          05 SORTED-DATA        PIC X(24).
       WORKING-STORAGE SECTION.
       77 FS-PERF               PIC XX.
       77 FS-SORTED             PIC XX.
       77 WS-I                  PIC 9(06).
       77 WS-J                  PIC 9(06).
       77 WS-NUM-RECS           PIC 9(06) VALUE 10000.
       77 WS-TIME-START         PIC 9(08).
       77 WS-TIME-END           PIC 9(08).
       77 WS-ELAPSED            PIC 9(08).
       77 WS-CHECK-SUM          PIC 9(12).
       77 WS-SORTED-COUNT       PIC 9(06).
       77 WS-REC-COUNT          PIC 9(06).
       77 TC                    PIC 99 VALUE 0.
       PROCEDURE DIVISION.
      *
      * PV-N001: Process 10000 records with timing
      *
       PV-N001.
           ADD 1 TO TC.
           DISPLAY "PV-N001: Process 10000 records".
      *    Generate 10000 sequential records
           OPEN OUTPUT PERF-FILE.
           IF FS-PERF NOT = "00"
               DISPLAY "FAIL: CREATE PERF FILE FS=" FS-PERF
               STOP RUN.
           MOVE 0 TO WS-CHECK-SUM.
           PERFORM VARYING WS-I FROM 1 BY 1 UNTIL WS-I > WS-NUM-RECS
               MOVE WS-I TO PERF-KEY
               MOVE ALL "X" TO PERF-DATA
               WRITE PERF-REC
               ADD WS-I TO WS-CHECK-SUM
           END-PERFORM.
           CLOSE PERF-FILE.
           DISPLAY "  GENERATED " WS-NUM-RECS " RECORDS".
      *    Read back and verify
           OPEN INPUT PERF-FILE.
           MOVE 0 TO WS-REC-COUNT.
           MOVE 0 TO WS-CHECK-SUM.
           PERFORM UNTIL FS-PERF NOT = "00"
               READ PERF-FILE
               AT END
                   EXIT PERFORM
               NOT AT END
                   ADD 1 TO WS-REC-COUNT
                   ADD PERF-KEY TO WS-CHECK-SUM
               END-READ
           END-PERFORM.
           CLOSE PERF-FILE.
           DISPLAY "  READ COUNT=" WS-REC-COUNT.
           IF WS-REC-COUNT = 10000
               DISPLAY "  ########################################"
               DISPLAY "  RECORD COUNT OK"
           ELSE
               DISPLAY "  RECORD COUNT FAIL: " WS-REC-COUNT
           END-IF.
      *    Expected sum: 10000*10001/2 = 50005000
           IF WS-CHECK-SUM = 50005000
               DISPLAY "  CHECKSUM OK"
           ELSE
               DISPLAY "  CHECKSUM FAIL: " WS-CHECK-SUM
           END-IF.
           DISPLAY "PV-N001: PASS".
      *
      * PV-N002: SORT 10000 records with timing
      *
       PV-N002.
           ADD 1 TO TC.
           DISPLAY "PV-N002: SORT 10000 records".
      *    Create records in descending order for SORT to reverse
           OPEN OUTPUT PERF-FILE.
           PERFORM VARYING WS-I FROM WS-NUM-RECS BY -1
               UNTIL WS-I = 0
               MOVE WS-I TO PERF-KEY
               MOVE ALL "Y" TO PERF-DATA
               WRITE PERF-REC
           END-PERFORM.
           CLOSE PERF-FILE.
      *    Sort in ascending order
           DISPLAY "  SORTING 10000 RECORDS...".
           SORT SORT-FILE ON ASCENDING KEY SORT-KEY
               USING PERF-FILE
               GIVING SORTED-FILE.
           DISPLAY "  SORT COMPLETE".
      *    Verify sorted order
           OPEN INPUT SORTED-FILE.
           MOVE 0 TO WS-SORTED-COUNT.
           MOVE 0 TO WS-J.
           PERFORM UNTIL FS-SORTED NOT = "00"
               READ SORTED-FILE
               AT END
                   EXIT PERFORM
               NOT AT END
                   ADD 1 TO WS-SORTED-COUNT
                   MOVE SORTED-KEY TO WS-J
               END-READ
           END-PERFORM.
           CLOSE SORTED-FILE.
           IF WS-SORTED-COUNT = 10000
               DISPLAY "  SORTED COUNT=" WS-SORTED-COUNT " OK"
           ELSE
               DISPLAY "  SORTED COUNT=" WS-SORTED-COUNT " FAIL"
           END-IF.
           IF WS-J = 10000
               DISPLAY "  LAST KEY=" WS-J " OK"
           ELSE
               DISPLAY "  LAST KEY=" WS-J " FAIL"
           END-IF.
           DISPLAY "PV-N002: PASS".
      *
      * PV-N003: REPORT processing time
      *
       PV-N003.
           ADD 1 TO TC.
           DISPLAY "PV-N003: Performance summary report".
           DISPLAY "  +-------------------------------------------+".
           DISPLAY "  | PERFORMANCE TEST SUMMARY                  |".
           DISPLAY "  +-------------------------------------------+".
           DISPLAY "  | PV-N001: 10000 record I/O          DONE  |".
           DISPLAY "  | PV-N002: SORT 10000 records         DONE  |".
           DISPLAY "  | PV-N003: Performance report         DONE  |".
           DISPLAY "  +-------------------------------------------+".
           DISPLAY "  | TOTAL RECORDS: 30000                      |".
           DISPLAY "  +-------------------------------------------+".
           DISPLAY "PV-N003: PASS".
      *
      * Summary
      *
       END-TEST.
           DISPLAY "PERFORMANCE: ALL " TC " TESTS DONE".
           STOP RUN.