Loader and Program Storage Report

Figure 69 shows the format of the Loader and Program Storage Report. This report is produced using a combination of the EXEC CICS® COLLECT STATISTICS PROGRAM and EXEC CICS COLLECT STATISTICS STORAGE commands. The statistics data is mapped by the DFHLDGDS and DFHSMDDS DSECTs. The field headings and contents are described in Table 193.

Figure 69. The Loader and Program Storage Report
Applid IYK2Z1V1  Sysid CJB3  Jobname CI07CJB1    Date 12/17/2004  Time 10:08:23   CICS 6.4.0     PAGE   7
 
 
Loader

  Library Load requests. . . . . . . . . . . . . :             440  Library Load Rate per second . . . . . . . . . :            0.04
  Total Library Load time. . . . . . . . . . . . :  00:00:07.54411
  Average Library Load time. . . . . . . . . . . :  00:00:00.01713  Total Program Uses . . . . . . . . . . . . . . :           7,608
                                                                    Program Use to Load Ratio. . . . . . . . . . . :           17.29
  Library Load requests that waited. . . . . . . :               6
  Total Library Load request wait time . . . . . :  00:00:00.10016  Times DFHRPL secondary extents detected. . . . :               0
  Average Library Load request wait time . . . . :  00:00:00.01668
  Current Waiting Library Load requests. . . . . :               0
  Peak Waiting Library Load requests . . . . . . :               1
  Times at Peak. . . . . . . . . . . . . . . . . :               6  Average Not-In-Use program size. . . . . . . . :             12K

  CDSA                                                              ECDSA

  Programs Removed by compression. . . . . . . . :               0  Programs Removed by compression. . . . . . . . :               0
  Time on the Not-In-Use Queue . . . . . . . . . :  00:00:00.00000  Time on the Not-In-Use Queue . . . . . . . . . :  00:00:00.00000
  Average Time on the Not-In-Use Queue . . . . . :  00:00:00.00000  Average Time on the Not-In-Use Queue . . . . . :  00:00:00.00000
  Programs Reclaimed from the Not-In-Use Queue . :               2  Programs Reclaimed from the Not-In-Use Queue . :             384
  Programs Loaded - now on the Not-In-Use Queue. :               1  Programs Loaded - now on the Not-In-Use Queue. :              11

  SDSA                                                              ESDSA

  Programs Removed by compression. . . . . . . . :               0  Programs Removed by compression. . . . . . . . :               0
  Time on the Not-In-Use Queue . . . . . . . . . :  00:00:00.00000  Time on the Not-In-Use Queue . . . . . . . . . :  00:00:00.00000
  Average Time on the Not-In-Use Queue . . . . . :  00:00:00.00000  Average Time on the Not-In-Use Queue . . . . . :  00:00:00.00000
  Programs Reclaimed from the Not-In-Use Queue . :               0  Programs Reclaimed from the Not-In-Use Queue . :               0
  Programs Loaded - now on the Not-In-Use Queue. :               0  Programs Loaded - now on the Not-In-Use Queue. :               0

  RDSA                                                              ERDSA

  Programs Removed by compression. . . . . . . . :               0  Programs Removed by compression. . . . . . . . :               0
  Time on the Not-In-Use Queue . . . . . . . . . :  00:00:00.00000  Time on the Not-In-Use Queue . . . . . . . . . :  00:00:00.00000
  Average Time on the Not-In-Use Queue . . . . . :  00:00:00.00000  Average Time on the Not-In-Use Queue . . . . . :  00:00:00.00000
  Programs Reclaimed from the Not-In-Use Queue . :               0  Programs Reclaimed from the Not-In-Use Queue . :           6,537
  Programs Loaded - now on the Not-In-Use Queue. :               1  Programs Loaded - now on the Not-In-Use Queue. :              28 
 
Program Storage

  Nucleus Program Storage (CDSA) . . . . . . . . :            44K   Nucleus Program Storage (ECDSA). . . . . . . . :             76K

  Program Storage (SDSA) . . . . . . . . . . . . :             0K   Program Storage (ESDSA). . . . . . . . . . . . :              0K
  Resident Program Storage (SDSA). . . . . . . . :             0K   Resident Program Storage (ESDSA) . . . . . . . :              0K

  Read-Only Nucleus Program Storage (RDSA) . . . :           128K   Read-Only Nucleus Program Storage (ERDSA). . . :         10,472K
  Read-Only Program Storage (RDSA) . . . . . . . :            52K   Read-Only Program Storage (ERDSA). . . . . . . :          6,720K
  Read-Only Resident Program Storage (RDSA). . . :             0K   Read-Only Resident Program Storage (ERDSA) . . :              0K

  CDSA used by Not-In-Use programs. :          1K   0.00% of CDSA   ECDSA used by Not-In-Use programs :         15K   0.00% of ECDSA
  SDSA used by Not-In-Use programs. :          0K   0.00% of SDSA   ESDSA used by Not-In-Use programs :          0K   0.00% of ESDSA
  RDSA used by Not-In-Use programs. :          1K   0.00% of RDSA   ERDSA used by Not-In-Use programs :        505K   0.00% of ERDSA
Table 193. Fields in the Loader and Program Storage Report
Field Heading Description
Loader
Library Load requests The number of times the loader has issued an MVS™ LOAD request to load programs from the DFHRPL library concatenation into CICS managed storage. Modules in the LPA are not included in this figure.

Source field: LDGLLR

Library Load Rate per second The number of times per second the loader has issued an MVS LOAD request to load programs from the DFHRPL library concatenation into CICS managed storage. Modules in the LPA are not included in this figure.

Source field: LDGLLR / Elapsed seconds (since the last statistics reset)

Total Program Uses The number of uses of any program by the CICS system.

Source field: LDGPUSES

Total Library Load time The total time taken for the number of library loads indicated by LDGLLR.

Source field: LDGLLT

Program Use to Load Ratio The ratio of program uses to programs loads.

Source field: (LDGPUSES / LDGLLR)

Average Library Load time The average time to load a program.

Source field: (LDGLLT / LDGLLR)

Times DFHRPL secondary extents detected The number of times the loader received an end-of-extent condition during a LOAD and successfully closed and reopened the DFHRPL library and retried the LOAD.

Source field: LDGDREBS

Library Load requests that waited The number of loader domain requests that were forced to suspend due to the loader domain performing an operation on that program on behalf of another task. These operations could be:
  • A NEWCOPY request
  • Searching the LPA
  • A physical load in progress.

This figure is the total number of tasks that have waited, and does not include those that are currently waiting (LDGWLR).

Source field: LDGWTDLR

Total Library Load request wait time The total suspended time for the number of tasks indicated by LDGWTDLR.

Source field: LDGTTW

Average Library Load request wait time The average loader domain request suspend time.

Source field: (LDGTTW / LDGWTDLR)

Current Waiting Library Load requests The number of loader domain requests that are currently forced to suspend due to the loader domain currently performing an operation on that program on behalf of another task. These operations could be:
  • A NEWCOPY request
  • Searching the LPA
  • A physical load in progress.

Source field: LDGWLR

Peak Waiting Library Load requests The maximum number of tasks suspended at one time.

Source field: LDGWLRHW

Times at Peak The number of times the high watermark level indicated by LDGWLRHW was reached.

This, along with the previous two values, is an indication of the level of contention for loader resource.

Source field: LDGHWMT

Average Not-In-Use program size The average size of a program currently on the Not-In-Use queue.

Source field: ((LDGCNIU + LDGSNIU + LDGRNIU + LDGECNIU + LDGESNIU + LDGERNIU) / 1024) / LDGPROGNIU)

Programs Removed by compression The number of program instances removed from storage by the Dynamic Program Storage Compression (DPSC) mechanism.

Source field: LDGDPSCR

Time on the Not-In-Use Queue The program Not-In-Use (NIU) queue membership time. For each program that becomes eligible for removal from storage by the DPSC mechanism, the time between the program becoming eligible and the actual time of its being removed from storage is calculated. This field is the sum of these times for all programs removed by the DPSC mechanism and as such can be greater than the elapsed time CICS run time. This field does not include the wait time for those programs reclaimed from the Not-In-Use queue.

Source field: LDGDPSCT

Average Time on the Not-In-Use Queue The average length of time that a program is eligible for removal from storage by the DPSC mechanism.

Source field: (LDGDPSCT / LDGDPSCR)

Programs Reclaimed from the Not-In-Use Queue The number of reclaims that CICS has made from the Not-In-Use (NIU) queue. Reclaims occur when a request is issued for programs currently in the Not-In-Use queue. The reclaimed instance of a program is no longer eligible for program compression (DPSC).

Source field: LDGRECNIU

Programs Loaded - on the Not-In-Use Queue The number of programs on the Not-In-Use (NIU) queue.

Source field: LDGPROGNIU

Program Storage
Nucleus Program Storage (CDSA) The current amount of storage allocated to nucleus programs in the CDSA.

Source field: (SMDCPS for subpool 'LDNUC  ' and 'LDNRS   / 1024)

Nucleus Program Storage (ECDSA) The current amount of storage allocated to nucleus programs in the ECDSA.

Source field: (SMDCPS for subpool 'LDENUC  ' and 'LDENRS  ' / 1024)

Program Storage (SDSA) The current amount of storage allocated to programs in the SDSA.

Source field: (SMDCPS for subpool 'LDPGM  ' / 1024)

Program Storage (ESDSA) The current amount of storage allocated to programs in the ESDSA.

Source field: (SMDCPS for subpool 'LDEPGM  ' / 1024)

Resident Program Storage (SDSA) The current amount of storage allocated to resident programs in the SDSA.

Source field: (SMDCPS for subpool 'LDRES  ' / 1024)

Resident Program Storage (ESDSA) The current amount of storage allocated to resident programs in the ESDSA.

Source field: (SMDCPS for subpool 'LDERES  ' / 1024)

Read-Only Nucleus Program Storage (RDSA) The current amount of storage allocated to nucleus programs in the RDSA.

Source field: (SMDCPS for subpool 'LDNUCRO  ' and 'LDNRSRO  ' / 1024)

Read-Only Nucleus Program Storage (ERDSA) The current amount of storage allocated to nucleus programs in the ERDSA.

Source field: (SMDCPS for subpool 'LDENUCRO  ' and 'LDENRSRO  ' / 1024)

Read-Only Program Storage (RDSA) The current amount of storage allocated to programs in the RDSA.

Source field: (SMDCPS for subpool 'LDPGMRO ' / 1024)

Read-Only Program Storage (ERDSA) The current amount of storage allocated to programs in the ERDSA.

Source field: (SMDCPS for subpool 'LDEPGMRO  ' / 1024)

Read-Only Resident Program Storage (RDSA) The current amount of storage allocated to resident programs in the RDSA.

Source field: (SMDCPS for subpool 'LDRESRO  ' / 1024)

Read-Only Resident Program Storage (ERDSA) The current amount of storage allocated to resident programs in the ERDSA.

Source field: (SMDCPS for subpool 'LDERESRO  ' / 1024)

CDSA used by Not-In-Use programs The current amount of CDSA storage which is occupied by Not-In-Use (NIU) programs.

Source field: (LDGSTGNIU(1) / 1024)

ECDSA used by Not-In-Use programs The current amount of ECDSA storage which is occupied by Not-In-Use (NIU) programs.

Source field: (LDGSTGNIU(2) / 1024)

SDSA used by Not-In-Use programs The current amount of SDSA storage which is occupied by Not-In-Use (NIU) programs.

Source field: (LDGSTGNIU(3) / 1024)

ESDSA used by Not-In-Use programs The current amount of ESDSA storage which is occupied by Not-In-Use (NIU) programs.

Source field: (LDGSTGNIU(4) / 1024)

RDSA used by Not-In-Use programs The current amount of RDSA storage which is occupied by Not-In-Use (NIU) programs.

Source field: (LDGSTGNIU(5) / 1024)

ERDSA used by Not-In-Use programs The current amount of ERDSA storage which is occupied by Not-In-Use (NIU) programs.

Source field: (LDGSTGNIU(6) / 1024)

Related reference
Back to full list of DFH0STAT reports
The DFH0STAT reports
Interpreting these statistics
Interpreting loader statistics
Full listing and DFHSTUP reports for these statistics
Loader domain statistics

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