gtps3m0kSystem Performance and Measurement Reference

File Data Analysis

Reports explained under this category include:

These are each described in this section.

File Summary Reports

These reports summarize all I/O activity except communication I/O over the life of the collection. The total number of DASD accesses, by device, are subdivided into data writes, data reads, and program reads; only writes and character counts are shown for tapes. All access data is on a per second basis except mean device queue, which is a mean of all interval snapshots taken during the collection. Tape and DASD accesses are totaled by control unit and channel as well as by system.

Figure 24. Random File Access Summary Report


RANDOM FILE ACCESS SUMMARY                               BSS   SUBSYSTEM           27 FEB        14:18:27     FILE     PAGE      3
    20 OBSERVATIONS
     HDWR S.M. SUB  DEVICE          MEAN ACCESSES PER SECOND              SSCH(S)         DEVICE QUEUES                      SERVICE
     ADDR  NO. SYS   TYPE      DATA      DATA     PROG                 LOCK    UNLOCK                        LOCK      FDCTC    TIME
                              WRITES     READS    READS     TOTAL      ONLY     ONLY      MAX.     MEAN   CONTENTION COMPLETE (MILS)
      VFA      ALL    TOT       7.30      0.00     0.00      7.30      ----      ----     ----     ----      ----      ----     ----
      VFA      ALL    WIO       7.30      0.00     ----      7.30      ----      ----     ----     ----      ----      ----     ----
 
      VFA      BSS    TOT       7.30      0.00     0.00      7.30      ----      ----     ----     ----      ----      ----     ----
      VFA      BSS    WIO       7.30      0.00     ----      7.30      ----      ----     ----     ----      ----      ----     ----
 
 
  CHANNEL 14
 
    CONTROL UNIT 1
     141C 0066 BSS   3390       0.00      0.00     0.00      0.00      0.00      0.00     0.00     0.00      0.00      0.00     0.00
     141D 0067 BSS   3390       0.00      0.00     0.00      0.00      0.00      0.00     0.00     0.00      0.00      0.00     0.00
     141E 004E BSS   3390      18.75     66.77     0.00     85.52      0.86      1.47     1.00     0.04      0.00      0.00     1.33
     141F 004F BSS   3390      18.68     66.45     0.00     85.13      0.78      1.28     1.00     0.04      0.00      0.00     1.22
 
    TOTAL CONTROL UNIT 1       37.43    133.22     0.00    170.65      1.64      2.75     ----     0.08      0.00      0.00     ----
 
  TOTAL CHANNEL 14             37.43    133.22     0.00    170.65      1.64      2.75     ----     0.08      0.00      0.00     ----
 
  CHANNEL 15
 
    CONTROL UNIT 1
     151C 0050 BSS   3390      19.01     68.26     0.00     87.27      0.69      1.32     1.00     0.04      0.00      0.00     1.33
     151D 005B BSS   3390      26.63    130.06     0.00    156.69      0.00      1.50     1.00     0.04      0.00      0.00     1.21
 
    TOTAL CONTROL UNIT 1       45.64    198.32     0.00    243.96      0.69      2.82     ----     0.08      0.00      0.00     ----
 
  TOTAL CHANNEL 15             45.64    198.32     0.00    243.96      0.69      2.82     ----     0.08      0.00      0.00     ----
 

·
·
·
CHANNEL 21 CONTROL UNIT 1 211C 004A BSS 3390 18.69 67.19 0.00 85.88 0.70 1.24 1.00 0.04 0.00 0.00 1.27 211D 004B BSS 3390 18.60 65.91 0.00 84.51 0.78 1.24 0.00 0.00 0.00 0.00 1.20 211E 0068 BSS 3390 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 TOTAL CONTROL UNIT 1 37.29 133.10 0.00 170.39 1.48 2.48 ---- 0.04 0.00 0.00 ---- TOTAL CHANNEL 21 37.29 133.10 0.00 170.39 1.48 2.48 ---- 0.04 0.00 0.00 ---- TOTAL SUBSYSTEM 326.15 1315.71 0.00 1641.86 7.30 20.02 ---- 0.49 0.00 0.00 ---- TOTAL DEVICES REPORTED = 27 NOTE: TOTAL ACCESSES ON THE RANDOM FILE ACCESS SUMMARY MAY DIFFER FROM OTHER REPORTS. 1) THE TOTAL ACCESSES ON DETAIL REPORTS = THE TOTAL ACCESSES LISTED ON THIS REPORT + THE FDCTC COUNT LISTED ON THIS REPORT. 2) THE TOTAL ACCESSES ON CACHE REPORTS = THE TOTAL ACCESSES LISTED ON THIS REPORT + (MULTIPLIER * THE FDCTC COUNT), WHERE THE MULTIPLIER IS EQUAL TO THE MEAN NUMBER OF I/O OPERATIONS GENERATED BY AN FDCTC.

The VFA efficiency summary, file access summary, and the random file access report provide a fairly clear picture of VFA activity in main and secondary storage.

Channel Path Reports

The Channel Path Activity reports consists of:

Figure 27. SDA Activity Exception Report


SDA ACTIVITY SUMMARY                                     SYSTEM WIDE
    40 OBSERVATIONS
 
      SDA ACTIVITY EXCEPTION REPORT
 
        SDA          CHPID          ACCESSES%     STATUS(START)   STATUS(END)
       04E0           25                78          ENABLED         ENABLED
                      65                21          ENABLED         ENABLED

Sequential File Access Report

This report (see Figure 28) provides the same kind of information as the Random File Access Report except that sequential devices (tapes) are focused on. The number of tape writes per second, the number of characters written to tape per second, and the device queue are all reported for the various channels and control units in use.

Figure 28. Sequential File Access Report


SEQUENTIAL FILE ACCESS SUMMARY                           SYSTEM WIDE               27 FEB        14:18:27     FILE     PAGE     10
    20 OBSERVATIONS
 
           HDWR.     TAPE   SUBSYSTEM                 TAPE  WRITES                   CHAR  TO  TAPE               DEVICE
           ADDR.     NAME   NAME                       PER SECOND                      PER SECOND                 QUEUE
                                                 MAX.     MIN.     MEAN       MAX.     MIN.           MEAN       MAX.      MEAN
       CHANNEL   F
         CONTROL UNIT 1
             F11     RTA    BSS                  0.00     0.00     0.00          0        0           0.00          0         0
             F12     RTC    BSS                  1.20     1.19     1.20       4945     4928        4935.20          0         0
 
         TOTAL CONTROL UNIT 1                  ------   ------     1.20      -----    -----        4935.00      -----     -----
       TOTAL CHANNEL  F                        ------   ------     1.20      -----    -----        4935.00      -----     -----
       TOTAL SYSTEM                            ------   ------     1.20      -----    -----        4935.00      -----     -----

Record ID Reports

The Record ID report (see Figure 29) can be produced for the system or by module number. The IDs are listed in alphabetic order after the two characters that represent program accesses. The level of activity against each record ID can be readily observed. The most active record IDs should always be allocated to cylinders near the midpoint of movable head files to reduce seek time. Unusual shifts in record ID activity can often be traced to a change in the input message mix.

Figure 29. Record ID Report


FILE ACCESSES PER RECORD ID                              BSS   SUBSYSTEM           27 FEB        14:18:27     FILE     PAGE    202
    20 OBSERVATIONS
                                                       VFA SUMMARY
                                                       ACCESS COUNTS                                           PERCENT    ACCESSES
   RECORD I.D.  SYNC   READS    WRITES IMMEDIATE   DELAYED       DFW      CFWS      CFWD RETENTIVE    BYPASS   OF TOTAL  PER SECOND
       X'00E0'             0         1                                                                            0.06     0.50
    CD,X'C3C4'             0         1                                                                            0.06     0.50
    E5,X'C5F5'            11        19                                                                            1.83    29.51
    E6,X'C5F6'            19        10                                                                            1.77    28.51
    E7,X'C5F7'            18        15                                                                            2.01    32.51
    F6,X'C6F6'            11        12                                                                            1.40    22.51
    GL,X'C7D3'             9        15                                                                            1.46    23.51
    GS,X'C7E2'          1222       161                                                                           84.28  1383.11
    G7,X'C7F7'            17        10                                                                            1.65    26.51
    LD,X'D3C4'            18        13                                                                            1.89    30.51
    OM,X'D6D4'             0         2                                                                            0.12     1.50
    SD,X'E2C4'            19         7                                                                            1.58    25.51
    YC,X'E8C3'             0        13                                                                            0.79    12.51
    YD,X'E8C4'             0        18                                                                            1.10    17.51
  TOTALS**              1344       297                                                                           99.99  1641.22
LEGEND:  'PROGRAM' I.D. = FILE ACCESSES DUE TO ENTERS, AND 'OVERFLOW' I.D. = OVERFLOW FILE ACCESSES DUE TO FINDS/FILES
         ALL OTHER I.D.'S PRINTED AS XX,X'XXXX', BOTH CHARACTER AND HEX REPRESENTATIONS
NOTE: DFW = DASD FAST WRITE, CFWS = CACHE FAST WRITE SIMPLEX, CFWD = CACHE FAST WRITE DUPLEX

File Accesses per Cylinder Report

The Cylinder Analysis Report (see Figure 30) can be produced for SYS, sum, or individual module numbers. SYS produces a report for each DASD device in the system, which can be correlated with the Record ID report to determine whether or not the most active records have been grouped around the center of the module. Arm movement analysis is included in this report. Arm movement of a particular module is calculated by using the following formula:

E(X) = P(i) * P(j) * |i-j| for every i,j from 0 to N

where:

Figure 30. Cylinder Analysis Report






FILE ACCESSES PER CYLINDER                               BSS   SUBSYSTEM
    40 OBSERVATIONS
                                                       DEVICE 04E0    MODULE
 
              CYLINDER                        ACCESSES
                   13                              2
                   34                              1
                   47                              2
                   50                              2
                   54                              1
                   61                              2
                   65                              1
                   66                              1
                  147                              2
 
              TOTAL                               14
 
THE EXPECTED ARM MOVEMENT IS :       37.97   CYLINDERS



File Comparison Plot Report

This report provides a way of comparing the total file access per second for each device type. It provides a concise summary in plot format of the average accesses per second for all devices in the system by device type. There is a section in this report for DASD devices. System load balancing is more feasible with this information.

Figure 31. File Comparison Plot


FILE COMPARISON PLOT                                     BSS   SUBSYSTEM           27 FEB        14:18:27     FILE     PAGE     11
    20 OBSERVATIONS
    HDWR SUB   S.M.                                                  DEVICE  TYPE                                    AXIS  INCR
    ADDR SYS    NO.                                                      3390                                             1.
    141C BSS   0066  .
    141D BSS   0067  .
    141E BSS   004E  .***********************************************************************
    141F BSS   004F  .***********************************************************************
    151C BSS   0050  .*************************************************************************
    151D BSS   005B  .****************************************************************************************************     156
    161C BSS   006C  .
    161D BSS   005D  .****************************************************************************************************     157
    161E BSS   005E  .****************************************************************************************************     157
    161F BSS   0058  .***
    171C BSS   005F  .****************************************************************************************************     156
    171D BSS   0065  .
    171E BSS   0051  .***
    181C BSS   004C  .************************************************************************
    181D BSS   004D  .***********************************************************************
    181E BSS   006B  .
    181F BSS   0060  .
    191C BSS   005C  .****************************************************************************************************     156
    191D BSS   0048  .***********************************************************************
    191E BSS   0063  .
    191F BSS   0072  .
    201C BSS   0047  .********************************************************************
    201D BSS   006D  .
    201E BSS   0049  .***********************************************************************
    211C BSS   004A  .************************************************************************
    211D BSS   004B  .**********************************************************************
    211E BSS   0068  .
                     |.........|.........|.........|.........|.........|.........|.........|.........|.........|.........|
                    0.00        12        24        36        48        60        72        84        96       108       120
                                                            MEAN TOTAL ACCESSES PER SECOND

Storage Control Reports

The Storage Control reports are primarily concerned with the record caching performed by certain 3880 and 3990 storage controls. The 3880 storage controls are reported on from the point of view of the individual storage director, while the 3990 storage controls are reported on from the point of view of the individual cache subsystem. This is due to differences in storage control organization: each 3880 storage director has its own record cache, but each 3990 cache subsystem has a record cache that is shared by the storage directors in the cache subsystem.

3990 Storage Control Report: Totals

This report contains totals for all of the active 3990 cache subsystems (see Figure 35 and Figure 36).

Figure 35. 3990 Storage Control Report: Totals (Part 1)


3990 STORAGE CONTROL REPORT:  TOTALS (PART 1)                                    COMPLEXWIDE   27 FEB   14:18:27   FILE   PAGE   205
                           TOTALS                  381-BYTE SLOTS        1055-BYTE SLOTS        4096-BYTE SLOTS
                           ---------------------- ---------------------- ---------------------- ----------------------
CATEGORY                   COUNT      RATE (*)    COUNT      RATE (*)    COUNT      RATE (*)    COUNT      RATE (*)
-------------------------- ---------- ----------- ---------- ----------- ---------- ----------- ---------- -----------
 
READS PER WRITE                              4.02                   0.00                   4.02                   0.00
 
READS                          603784     1315.43          0        0.00     603784     1315.43          0        0.00
    CFW READS                  603784     1315.43          0        0.00     603784     1315.43          0        0.00
    NORMAL READS                    0        0.00          0        0.00          0        0.00          0        0.00
 
READ HITS                      603784     1315.43          0        0.00     603784     1315.43          0        0.00
    CFW READ HITS              603784     1315.43          0        0.00     603784     1315.43          0        0.00
    NORMAL READ HITS                0        0.00          0        0.00          0        0.00          0        0.00
 
READ HIT PERCENTAGE                        100.00                   0.00                 100.00                   0.00
    CFW READ HITS                          100.00                   0.00                 100.00                   0.00
    NORMAL READ HITS                         0.00                   0.00                   0.00                   0.00
 
WRITES                         150041      326.89          0        0.00     150041      326.89          0        0.00
    CFW WRITES                 128558      280.08          0        0.00     128558      280.08          0        0.00
    NORMAL WRITES               21483       46.80          0        0.00      21483       46.80          0        0.00
        RETENTIVE WRITES            0        0.00          0        0.00          0        0.00          0        0.00
        DFW WRITES              21483       46.80          0        0.00      21483       46.80          0        0.00
        DFW BYPASSES                0        0.00          0        0.00          0        0.00          0        0.00
 
WRITE HITS                     150000      326.80          0        0.00     150000      326.80          0        0.00
    CFW WRITE HITS             128558      280.08          0        0.00     128558      280.08          0        0.00
        HIT PERCENTAGE                     100.00                   0.00                 100.00                   0.00
    DFW WRITE HITS (NVS)        21442       46.71          0        0.00      21442       46.71          0        0.00
        NVS HIT PERCENTAGE                  99.81                   0.00                  99.81                   0.00
 
READS AND WRITES               753825     1642.32          0        0.00     753825     1642.32          0        0.00
DESTAGE OPERATIONS                  0        0.00          0        0.00          0        0.00          0        0.00
    DESTAGE PERCENTAGE                       0.00                   0.00                   0.00                   0.00
 
CAPTURE CHAINS                      0        0.00
    CAPTURE CHAIN HITS              0        0.00
    HIT PERCENTAGE                           0.00
 
RESTORE CHAINS                      0        0.00
 
TOTAL BYPASS CACHE CHAINS           0        0.00
    BAD READS AND WRITES            0        0.00
 
====================================================================================================================================
NOTE:  THE RATE COLUMN ALSO CONTAINS PERCENTAGES AND RATIOS
NOTE:  THESE TOTALS ARE FOR    27 DASD BACKING   8 CACHE SUBSYSTEMS

Figure 36. 3990 Storage Control Report: Totals (Part 2)


3990 STORAGE CONTROL REPORT:  TOTALS (PART 2)                                    COMPLEXWIDE   27 FEB   14:18:27   FILE   PAGE   206
CACHE SHAPE  CURRENT IML   NEXT IML
             ------------  ------------
SLOTS        SIZE PERCENT  SIZE PERCENT
----------   ---- -------  ---- -------
FULL TRACK          25.00         25.00
RECORD 1      381   25.00   381   25.00
RECORD 2     1055   25.00  1055   25.00
RECORD 3     4096   25.00  4096   25.00
 
LOCKING
 
CATEGORY                CURRENT IML  NEXT IML     SOE          EOE
----------------------  -----------  -----------  -----------  -----------
LOCKS ALLOCATED              131072            0
LOCKS IN USE                                                5            4
PERCENTAGE IN USE                                        *.**         *.**
RAN OUT OF LOCKS?
NO
 
====================================================================================================================================
NOTE:  SOE = START OF (DATA COLLECTION) EPISODE, EOE = END OF EPISODE

3990 Storage Control Report: Subtotals for Cache Subsystem nnnn

This report contains subtotals for a specific active 3990 cache subsystem (see Figure 37, Figure 38 and Figure 39).

Figure 37. 3990 Storage Control Report: Subtotals for Cache Subsystem nnnn (Part 1)


3990 STORAGE CONTROL REPORT:  SUBTOTALS FOR CACHE SUBSYSTEM 6207 (PART 1)        COMPLEXWIDE   27 FEB   14:18:27   FILE   PAGE   207
                           TOTALS                  381-BYTE SLOTS        1055-BYTE SLOTS        4096-BYTE SLOTS
                           ---------------------- ---------------------- ---------------------- ----------------------
CATEGORY                   COUNT      RATE (*)    COUNT      RATE (*)    COUNT      RATE (*)    COUNT      RATE (*)
-------------------------- ---------- ----------- ---------- ----------- ---------- ----------- ---------- -----------
 
READS PER WRITE                              3.52                   0.00                   3.52                   0.00
 
READS                           59687      130.04          0        0.00      59687      130.04          0        0.00
    CFW READS                   59687      130.04          0        0.00      59687      130.04          0        0.00
    NORMAL READS                    0        0.00          0        0.00          0        0.00          0        0.00
 
READ HITS                       59687      130.04          0        0.00      59687      130.04          0        0.00
    CFW READ HITS               59687      130.04          0        0.00      59687      130.04          0        0.00
    NORMAL READ HITS                0        0.00          0        0.00          0        0.00          0        0.00
 
READ HIT PERCENTAGE                        100.00                   0.00                 100.00                   0.00
    CFW READ HITS                          100.00                   0.00                 100.00                   0.00
    NORMAL READ HITS                         0.00                   0.00                   0.00                   0.00
 
WRITES                          16955       36.94          0        0.00      16955       36.94          0        0.00
    CFW WRITES                  13221       28.80          0        0.00      13221       28.80          0        0.00
    NORMAL WRITES                3734        8.13          0        0.00       3734        8.13          0        0.00
        RETENTIVE WRITES            0        0.00          0        0.00          0        0.00          0        0.00
        DFW WRITES               3734        8.13          0        0.00       3734        8.13          0        0.00
        DFW BYPASSES                0        0.00          0        0.00          0        0.00          0        0.00
 
WRITE HITS                      16955       36.94          0        0.00      16955       36.94          0        0.00
    CFW WRITE HITS              13221       28.80          0        0.00      13221       28.80          0        0.00
        HIT PERCENTAGE                     100.00                   0.00                 100.00                   0.00
    DFW WRITE HITS (NVS)         3734        8.13          0        0.00       3734        8.13          0        0.00
        NVS HIT PERCENTAGE                 100.00                   0.00                 100.00                   0.00
 
READS AND WRITES                76642      166.98          0        0.00      76642      166.98          0        0.00
DESTAGE OPERATIONS                  0        0.00          0        0.00          0        0.00          0        0.00
    DESTAGE PERCENTAGE                       0.00                   0.00                   0.00                   0.00
 
CAPTURE CHAINS                      0        0.00
    CAPTURE CHAIN HITS              0        0.00
    HIT PERCENTAGE                           0.00
 
RESTORE CHAINS                      0        0.00
 
TOTAL BYPASS CACHE CHAINS           0        0.00
    BAD READS AND WRITES            0        0.00
 
====================================================================================================================================
NOTE:  THE RATE COLUMN ALSO CONTAINS PERCENTAGES AND RATIOS
NOTE:  THESE SUBTOTALS ARE FOR   3 DASD

Figure 38. 3990 Storage Control Report: Subtotals for Cache Subsystem mmmm (Part 2)


3990 STORAGE CONTROL REPORT:  SUBTOTALS FOR CACHE SUBSYSTEM 6207 (PART 2)        COMPLEXWIDE   27 FEB   14:18:27   FILE   PAGE   208
CACHE STATUS
 
CATEGORY                        SOE  EOE  PROTOTYPE
------------------------------  ---  ---  ---------
CACHING ACTIVE                  YES  YES  000. ....
CACHE COMING ONLINE              NO   NO  001. ....
CACHING FAILED                   NO   NO  010. ....
UNDEFINED                        NO   NO  011. ....
CACHING DEACTIVATED              NO   NO  100. ....
CACHING SUSPENDED                NO   NO  101. ....
DESTAGING IN PROGRESS            NO   NO  110. ....
DESTAGING FAILED                 NO   NO  111. ....
CACHE DISABLED FOR MAINTENANCE   NO   NO  ...1 ....
UNDEFINED                        NO   NO  .... 1...
UNDEFINED                        NO   NO  .... .1..
IML DEVICE UNAVAILABLE           NO   NO  .... ..1.
CACHE-FAST-WRITE DEACTIVATED     NO   NO  .... ...1
 
NVS STATUS
 
CATEGORY                      SOE  EOE  PROTOTYPE
----------------------------  ---  ---  ---------
NVS ACTIVE                    YES  YES  00.. ....
NVS FAILED                     NO   NO  01.. ....
NVS UNAVAILABLE                NO   NO  10.. ....
NVS PENDING                    NO   NO  11.. ....
UNDEFINED                      NO   NO  ..1. ....
NVS DISABLED FOR MAINTENANCE   NO   NO  ...1 ....
NVS PENDING DUE TO ERROR       NO   NO  .... 1...
UNDEFINED                      NO   NO  .... .1..
UNDEFINED                      NO   NO  .... ..1.
UNDEFINED                      NO   NO  .... ...1
 
CACHE CAPACITY          START OF EPISODE    END OF EPISODE
                        ------------------  ------------------
CATEGORY    IML AMOUNT  AMOUNT     PERCENT  AMOUNT     PERCENT
----------  ----------  ---------- -------  ---------- -------
CONFIGURED  1073741824
AVAILABLE               1069498368   99.60  1069498368   99.60
PINNED                           0    0.00           0    0.00
OFFLINE                          0    0.00           0    0.00
 
NVS CAPACITY            START OF EPISODE    END OF EPISODE
                        ------------------  ------------------
CATEGORY    IML AMOUNT  AMOUNT     PERCENT  AMOUNT     PERCENT
----------  ----------  ---------- -------  ---------- -------
CONFIGURED    16777216
PINNED                           0    0.00           0    0.00
 
====================================================================================================================================
NOTE:  SOE = START OF (DATA COLLECTION) EPISODE, EOE = END OF EPISODE

Figure 39. 3990 Storage Control Report: Subtotals for Cache Subsystem mmmm (Part 3)


3990 STORAGE CONTROL REPORT:  SUBTOTALS FOR CACHE SUBSYSTEM 6207 (PART 3)        COMPLEXWIDE   27 FEB   14:18:27   FILE   PAGE   209
CACHE SHAPE  CURRENT IML   NEXT IML
             ------------  ------------
SLOTS        SIZE PERCENT  SIZE PERCENT
----------   ---- -------  ---- -------
FULL TRACK          25.00         25.00
RECORD 1      381   25.00   381   25.00
RECORD 2     1055   25.00  1055   25.00
RECORD 3     4096   25.00  4096   25.00
 
LOCKING
 
CATEGORY                CURRENT IML  NEXT IML     SOE          EOE          HWM
----------------------  -----------  -----------  -----------  -----------  -----------
LOCKS ALLOCATED               16384            0
LOCKS IN USE                                                1            0            0
PERCENTAGE IN USE                                        0.01         0.00         0.00
RAN OUT OF LOCKS?
NO
 
====================================================================================================================================
NOTE:  SOE = START OF (DATA COLLECTION) EPISODE, EOE = END OF EPISODE, HWM = HIGHWATER MARK DURING EPISODE

3990 Storage Control Report for SDA mmmm, Cache Subsystem nnnn

This report contains subtotals for a specific SDA on an active 3990 cache subsystem (see Figure 40 and Figure 41)

Figure 40. 3990 Storage Control Report for SDA nnnn, Cache Subsystem mmmm (Part 1)


3990 STORAGE CONTROL REPORT FOR SDA 0231, CACHE SUBSYSTEM 00FE (PART 1)
 
                           TOTALS                  381-BYTE SLOTS        1055-BY
                           ---------------------- ---------------------- -------
CATEGORY                   COUNT      RATE (*)    COUNT      RATE (*)    COUNT
-------------------------- ---------- ----------- ---------- ----------- -------
 
READS PER WRITE                              1.00                   0.69
 
READS                           24733       83.00        206        0.69
    CFW READS                   24733       83.00        206        0.69
    NORMAL READS                    0        0.00          0        0.00
 
READ HITS                       24721       82.96        206        0.69
    CFW READ HITS               24721       82.96        206        0.69
    NORMAL READ HITS                0        0.00          0        0.00
 
READ HIT PERCENTAGE                         99.95                 100.00
    CFW READ HITS                           99.95                 100.00
    NORMAL READ HITS                         0.00                   0.00
 
WRITES                          24793       83.20        297        1.00
    CFW WRITES                  24432       81.99          0        0.00
    NORMAL WRITES                 361        1.21        297        1.00
        RETENTIVE WRITES          361        1.21        297        1.00
        DFW WRITES                  0        0.00          0        0.00
        DFW BYPASSES                0        0.00          0        0.00
 
WRITE HITS                      24432       81.99          0        0.00
    CFW WRITE HITS              24432       81.99          0        0.00
        HIT PERCENTAGE                     100.00                   0.00
    DFW WRITE HITS (NVS)            0        0.00          0        0.00
        NVS HIT PERCENTAGE                   0.00                   0.00
 
READS AND WRITES                49526      166.19        503        1.69
DESTAGE OPERATIONS                  0        0.00          0        0.00
    DESTAGE PERCENTAGE                       0.00                   0.00
 
CAPTURE CHAINS                      0        0.00
    CAPTURE CHAIN HITS              0        0.00
    HIT PERCENTAGE                           0.00
 
RESTORE CHAINS                      0        0.00
 
TOTAL BYPASS CACHE CHAINS           0        0.00
    BAD READS AND WRITES            0        0.00
 
================================================================================
NOTE:  SYMBOLIC DEVICE ADDRESS 0231 IS SYMBOLIC MODULE NUMBER 0047 IN TPF SUBSYS
NOTE:  THE RATE COLUMN ALSO CONTAINS PERCENTAGES AND RATIOS


Figure 41. 3990 Storage Control Report for SDA nnnn, Cache Subsystem mmmm (Part 2)


3990 STORAGE CONTROL REPORT FOR SDA 0231, CACHE SUBSYSTEM 00FE (PART 2)
 
DASD STATUS
 
CATEGORY                     SOE  EOE  PROTOTYPE
---------------------------  ---  ---  -----------
CACHING ACTIVE               YES  YES  00.. .... .
UNDEFINED                     NO   NO  01.. .... .
DEACTIVATE PENDING            NO   NO  10.. .... .
CACHING DEACTIVATED           NO   NO  11.. .... .
DASD-FAST-WRITE ALLOWED      YES  YES  ..00 .... .
UNDEFINED                     NO   NO  ..01 .... .
DEACTIVATE PENDING            NO   NO  ..10 .... .
DASD-FAST-WRITE DEACTIVATED   NO   NO  ..11 .... .
PRIMARY OF A DUPLEX PAIR      NO   NO  .... 1... .
SECONDARY OF A DUPLEX PAIR    NO   NO  .... .1.. .
DUPLEX PAIR SUSPENDED         NO   NO  .... **1. .
DUPLEX PAIR AVAILABLE         NO   NO  .... **00 .
DUPLEX PAIR PENDING           NO   NO  .... **01 .
PINNED DATA EXISTS            NO   NO  .... .... 1
 
================================================================================
NOTE:  SYMBOLIC DEVICE ADDRESS 0231 IS SYMBOLIC MODULE NUMBER 0047 IN TPF SUBSYS
NOTE:  SOE = START OF (DATA COLLECTION) EPISODE, EOE = END OF EPISODE

3990 Storage Control Cache Summary Report

This report contains summarized totals for all of the 3990 cache subsystems and summarized subtotals for each of the active 3990 cache subsystems (see Figure 42).

Figure 42. 3990 Storage Control Cache Summary Report


3990 STORAGE CONTROL CACHE SUMMARY REPORT                                        COMPLEXWIDE   27 FEB   14:18:27   FILE   PAGE   203
CATEGORY                       TOTALS      SSID 6207   SSID 6208   SSID 6209   SSID 620B   SSID 620C   SSID 620D   SSID 620E
------------------------------ ----------- ----------- ----------- ----------- ----------- ----------- ----------- -----------
NUMBER OF CACHE SUBSYSTEMS               8
NUMBER OF DASD                          27           3           3           4           4           3           4           4
 
NUMBER OF LOCKS ALLOCATED           131072       16384       16384       16384       16384       16384       16384       16384
RAN OUT OF LOCKS?
NO          NO          NO          NO          NO          NO          NO          NO
 
SOE: CACHE CONFIGURED CAPACITY              1073741824   536870912   536870912  1073741824   536870912   536870912   536870912
         PERCENTAGE PINNED                        0.00        0.00        0.00        0.00        0.00        0.00        0.00
         PERCENTAGE OFFLINE                       0.00        0.00        0.00        0.00        0.00        0.00        0.00
     NVS CONFIGURED CAPACITY                  16777216    16777216    16777216    16777216    16777216    16777216    16777216
         PERCENTAGE PINNED                        0.00        0.00        0.00        0.00        0.00        0.00        0.00
     LOCKS IN USE                        5           1           2           0           2           0           0           0
         PERCENTAGE IN USE            *.**        0.01        0.01        0.00        0.01        0.00        0.00        0.00
EOE: CACHE CONFIGURED CAPACITY              1073741824   536870912   536870912  1073741824   536870912   536870912   536870912
         PERCENTAGE PINNED                        0.00        0.00        0.00        0.00        0.00        0.00        0.00
         PERCENTAGE OFFLINE                       0.00        0.00        0.00        0.00        0.00        0.00        0.00
     NVS CONFIGURED CAPACITY                  16777216    16777216    16777216    16777216    16777216    16777216    16777216
         PERCENTAGE PINNED                        0.00        0.00        0.00        0.00        0.00        0.00        0.00
     LOCKS IN USE                        4           0           0           0           2           0           0           1
         PERCENTAGE IN USE            *.**        0.00        0.00        0.00        0.01        0.00        0.00        0.01
HWM: LOCKS IN USE                                    0           0           0           0           0           0           0
         PERCENTAGE IN USE                        0.00        0.00        0.00        0.00        0.00        0.00        0.00
 
READS PER WRITE                       4.02        3.52        3.56        3.55        4.62        4.33        3.51        4.36
READS                              1315.43      130.04      133.45      133.33      260.57      130.04      132.65      197.56
    CFW READS                      1315.43      130.04      133.45      133.33      260.57      130.04      132.65      197.56
    NORMAL READS                      0.00        0.00        0.00        0.00        0.00        0.00        0.00        0.00
READ HITS                          1315.43      130.04      133.45      133.33      260.57      130.04      132.65      197.56
    CFW READ HITS                  1315.43      130.04      133.45      133.33      260.57      130.04      132.65      197.56
    NORMAL READ HITS                  0.00        0.00        0.00        0.00        0.00        0.00        0.00        0.00
READ HIT PERCENTAGE                 100.00      100.00      100.00      100.00      100.00      100.00      100.00      100.00
    CFW READ HITS                   100.00      100.00      100.00      100.00      100.00      100.00      100.00      100.00
    NORMAL READ HITS                  0.00        0.00        0.00        0.00        0.00        0.00        0.00        0.00
WRITES                              326.89       36.94       37.52       37.52       56.40       30.04       37.79       45.35
    CFW WRITES                      280.08       28.80       29.64       29.64       52.93       26.85       29.91       41.25
    NORMAL WRITES                    46.80        8.13        7.88        7.87        3.47        3.19        7.88        4.10
        RETENTIVE WRITES              0.00        0.00        0.00        0.00        0.00        0.00        0.00        0.00
        DFW WRITES                   46.80        8.13        7.88        7.87        3.47        3.19        7.88        4.10
        DFW BYPASSES                  0.00        0.00        0.00        0.00        0.00        0.00        0.00        0.00
WRITE HITS                          326.80       36.94       37.52       37.51       56.38       30.03       37.78       45.33
    CFW WRITE HITS                  280.08       28.80       29.64       29.64       52.93       26.85       29.91       41.25
        HIT PERCENTAGE              100.00      100.00      100.00      100.00      100.00      100.00      100.00      100.00
    DFW WRITE HITS (NVS)             46.71        8.13        7.88        7.87        3.45        3.18        7.86        4.08
        NVS HIT PERCENTAGE           99.81      100.00       99.97       99.97       99.37       99.52       99.83       99.47
READS AND WRITES                   1642.32      166.98      170.98      170.84      316.98      160.09      170.44      242.91
DESTAGE OPERATIONS                    0.00        0.00        0.00        0.00        0.00        0.00        0.00        0.00
    DESTAGE PERCENTAGE                0.00        0.00        0.00        0.00        0.00        0.00        0.00        0.00
CAPTURE CHAINS                        0.00        0.00        0.00        0.00        0.00        0.00        0.00        0.00
    CAPTURE CHAIN HITS                0.00        0.00        0.00        0.00        0.00        0.00        0.00        0.00
        HIT PERCENTAGE                0.00        0.00        0.00        0.00        0.00        0.00        0.00        0.00
RESTORE CHAINS                        0.00        0.00        0.00        0.00        0.00        0.00        0.00        0.00
TOTAL BYPASS CACHE CHAINS             0.00        0.00        0.00        0.00        0.00        0.00        0.00        0.00
    BAD READS AND WRITES              0.00        0.00        0.00        0.00        0.00        0.00        0.00        0.00
 
====================================================================================================================================
NOTE:  SOE = START OF (DATA COLLECTION) EPISODE, EOE = END OF EPISODE, HWM = HIGHWATER MARK DURING EPISODE
NOTE:  CFW = CACHE FAST WRITE, DFW = DASD FAST WRITE, NVS = NONVOLATILE STORAGE

3990 Storage Control Device Summary Report for Cache Subsystem

This report contains summarized totals for all 3990 cache subsystems, summarized subtotals for a specific active 3990 cache subsystem, and summarized statistics for each of the active DASDs backing the 3990 cache subsystem (see Figure 43).

Figure 43. 3990 Storage Control Device Summary Report for Cache Subsystem mmmm


3990 STORAGE CONTROL DEVICE SUMMARY REPORT FOR CACHE SUBSYSTEM 6207              COMPLEXWIDE   27 FEB   14:18:27   FILE   PAGE   231
CATEGORY                       TOTALS      SSID 6207   SDA 201C    SDA 201D    SDA 201E
------------------------------ ----------- ----------- ----------- ----------- -----------
NUMBER OF CACHE SUBSYSTEMS               8
NUMBER OF DASD                          27           3
TPF SUBSYSTEM                                          BSS         BSS         BSS
 
NUMBER OF LOCKS ALLOCATED           131072       16384
RAN OUT OF LOCKS?
NO          NO
 
SOE: CACHE CONFIGURED CAPACITY              1073741824
         PERCENTAGE PINNED                        0.00
         PERCENTAGE OFFLINE                       0.00
     NVS CONFIGURED CAPACITY                  16777216
         PERCENTAGE PINNED                        0.00
     LOCKS IN USE                        5           1
         PERCENTAGE IN USE            *.**        0.01
EOE: CACHE CONFIGURED CAPACITY              1073741824
         PERCENTAGE PINNED                        0.00
         PERCENTAGE OFFLINE                       0.00
     NVS CONFIGURED CAPACITY                  16777216
         PERCENTAGE PINNED                        0.00
     LOCKS IN USE                        4           0
         PERCENTAGE IN USE            *.**        0.00
HWM: LOCKS IN USE                                    0
         PERCENTAGE IN USE                        0.00
 
READS PER WRITE                       4.02        3.52        3.51        0.00        3.53
READS                              1315.43      130.04       63.71        0.00       66.32
    CFW READS                      1315.43      130.04       63.71        0.00       66.32
    NORMAL READS                      0.00        0.00        0.00        0.00        0.00
READ HITS                          1315.43      130.04       63.71        0.00       66.32
    CFW READ HITS                  1315.43      130.04       63.71        0.00       66.32
    NORMAL READ HITS                  0.00        0.00        0.00        0.00        0.00
READ HIT PERCENTAGE                 100.00      100.00      100.00        0.00      100.00
    CFW READ HITS                   100.00      100.00      100.00        0.00      100.00
    NORMAL READ HITS                  0.00        0.00        0.00        0.00        0.00
WRITES                              326.89       36.94       18.16        0.00       18.78
    CFW WRITES                      280.08       28.80       14.18        0.00       14.63
    NORMAL WRITES                    46.80        8.13        3.98        0.00        4.16
        RETENTIVE WRITES              0.00        0.00        0.00        0.00        0.00
        DFW WRITES                   46.80        8.13        3.98        0.00        4.16
        DFW BYPASSES                  0.00        0.00        0.00        0.00        0.00
WRITE HITS                          326.80       36.94       18.16        0.00       18.78
    CFW WRITE HITS                  280.08       28.80       14.18        0.00       14.63
        HIT PERCENTAGE              100.00      100.00      100.00        0.00      100.00
    DFW WRITE HITS (NVS)             46.71        8.13        3.98        0.00        4.16
        NVS HIT PERCENTAGE           99.81      100.00      100.00        0.00      100.00
READS AND WRITES                   1642.32      166.98       81.87        0.00       85.10
DESTAGE OPERATIONS                    0.00        0.00        0.00        0.00        0.00
    DESTAGE PERCENTAGE                0.00        0.00        0.00        0.00        0.00
CAPTURE CHAINS                        0.00        0.00        0.00        0.00        0.00
    CAPTURE CHAIN HITS                0.00        0.00        0.00        0.00        0.00
        HIT PERCENTAGE                0.00        0.00        0.00        0.00        0.00
RESTORE CHAINS                        0.00        0.00        0.00        0.00        0.00
TOTAL BYPASS CACHE CHAINS             0.00        0.00        0.00        0.00        0.00
    BAD READS AND WRITES              0.00        0.00        0.00        0.00        0.00
 
====================================================================================================================================
NOTE:  SOE = START OF (DATA COLLECTION) EPISODE, EOE = END OF EPISODE, HWM = HIGHWATER MARK DURING EPISODE
NOTE:  CFW = CACHE FAST WRITE, DFW = DASD FAST WRITE, NVS = NONVOLATILE STORAGE

DP Record Anomaly Log

There is an error log that reports any anomalies detected in the data collected for the storage control reports (see Figure 44).

Figure 44. DP Record Anomaly Log


************************************************   START OF DP RECORD ANOMALY LO
************************************************   START OF DP RECORD ANOMALY LO
************************************************   START OF DP RECORD ANOMALY LO
THE FOLLOWING DASD HAD DUPLICATE START-OF-EPISODE DATA:
  0003  0004  0005
THE FOLLOWING DASD HAD DUPLICATE END-OF-EPISODE DATA:
  0004  0005  0006  0007  0008  0013  0015  0062
THE FOLLOWING DASD WERE APPARENTLY ONLINE AT THE END OF DATA COLLECTION BUT OFFL
  0006  0008  0013  0015  0062
THE FOLLOWING DASD WERE APPARENTLY ONLINE AT THE START OF DATA COLLECTION BUT OF
  0003
THE FOLLOWING DASD WERE APPARENTLY RESET DURING DATA COLLECTION:
  0004  0005  0007  000D  001D  002B  0033  0037  0038  003C  0046  004F  0051
  00CB  00DE  00E0  00E2  00F2  00F7
THE FOLLOWING DASD HAD DIFFERENT START- AND END-OF-EPISODE CONFIGURED-CACHE-CAPA
  0004  0005  0007
THE FOLLOWING DASD HAD DIFFERENT START- AND END-OF-EPISODE CONFIGURED-NONVOLATIL
  0004  0007
THE FOLLOWING DASD HAD DIFFERENT START- AND END-OF-EPISODE RECORD SIZES:
  0004  0005  0007
THE FOLLOWING DASD HAD DIFFERENT START- AND END-OF-EPISODE TRACK/RECORD PERCENTA
  0004  0005  0007
THE FOLLOWING DASD WERE BACKING INCONSISTENT STORAGE CONTROLS:
  0003  0004  0005  0006  0008  0013  0015  0062
THE FOLLOWING DASD HAD DIFFERENT START- AND END-OF-EPISODE LOCKING CHARACTERISTI
  0074  0075  0077
**************************************************  END OF DP RECORD ANOMALY LOG
**************************************************  END OF DP RECORD ANOMALY LOG
**************************************************  END OF DP RECORD ANOMALY LOG


See the publications listed in Related Information for definitions of the terms used in these reports and for more information about the 3990 cache control units.