ESS Statistics Report

The ESS Statistics Report displays the adapters and their I/O activity for each Enterprise Storage Server (ESS) that is connected to the system.

The statistics are kept inside the hardware and, as a result, include I/O activity from all connected systems.

The ESS Statistics Report is produced by using the ESS Analyzer control statement. The data is obtained by using the CACHE Extractor control statement, specifying RECORDS=ESS or RECORDS=ALL.

A sample ESS Statistics Report is shown in the following figure.

PRODUCED BY CMF ANALYZER (v.r.mm  RSL yymm )                       ESS STATISTICS REPORT                           RPTSEQ     3 PAGE      6
BMC SOFTWARE, INC.                                        BMC SOFTWARE, INC.                            REPORT DATE: DD MMM YY 11.49
ACTL 22 SEP YY 12.22.57  22 SEP YY 18.44.26                   HOUSTON, TX.                              SYSTEM ID: S0W1     Z v.rr.n

BASED ON REC TYPE/# RECS/# SAMPLES/REC HOURS:  74-8/15/5/1.05
------------------------------------ ESS SERIAL NUMBER: 00000AMAA1   TYPE-MODEL: 002107-921 ----------------------------------------

------------------------------------------------ ESS LINK STATISTICS SECTION --------------------------------------------------

----- ADAPTER -----   LINK TYPE          BYTES      BYTES PER    OPERATIONS     RESP TIME        I/O
 ID   TYPE                              PER SEC     OPERATION      PER SEC     /OPERATION     INTENSITY

0030  FIBRE  2Gb      ECKD READ         632,963           854         741.1             0          12.8
                      ECKD WRITE        111,891         2,815          39.7             0           2.0
                                        -------       -------       -------       -------       -------
                      SUMMARY           744,854           954         780.9             0          14.7

0031  FIBRE  2Gb      ECKD READ           8,964         1,981           4.5             0           0.1
                      ECKD WRITE          2,596         1,579           1.6           0.1           0.1
                                        -------       -------       -------       -------       -------
                      SUMMARY            11,559         1,874           6.2             0           0.3

0100  FIBRE  2Gb      ECKD READ         620,988           843         736.8             0          12.8
                      ECKD WRITE        106,319         2,867          37.1             0           1.8
                                        -------       -------       -------       -------       -------
                      SUMMARY           727,307           940         773.9             0          14.6

0101  FIBRE  2Gb      ECKD READ         774,583         2,582         300.0             0           8.1
                      ECKD WRITE        227,623         1,680         135.5             0           4.7
                                        -------       -------       -------       -------       -------
                      SUMMARY            1,002K         2,301         435.5             0          12.8

0230  FIBRE  2Gb      ECKD READ         626,560           854         733.5             0          12.6
                      ECKD WRITE        117,151         2,904          40.3             0           1.9
                                        -------       -------       -------       -------       -------
                      SUMMARY           743,711           961         773.8             0          14.6

0300  FIBRE  2Gb      ECKD READ         790,745         2,526         313.0             0           8.2
                      ECKD WRITE        226,689         1,748         129.7             0           4.6
                                        -------       -------       -------       -------       -------
                      SUMMARY            1,017K         2,298         442.7             0          12.8


------------------------------------------------ ESS EXTENT POOL STATISTICS SECTION ------------------------------------------------

 --- EXTENT POOL ---    ------- REAL EXTENTS -------
  ID   ---- TYPE ---    CAPACITY    EXTENT     ALLOC
                        (GBYTES)     COUNT   EXTENTS

 0000  CKD    1Gb          1,560     1,771     1,771

 0001  CKD    1Gb          1,560     1,771     1,771


---------------------------------------------------- ESS RANK STATISTICS SECTION ---------------------------------------------------

                      RAID   ------ READ OPERATIONS -------     ------ WRITE OPERATIONS ------     --------- RANK ATTRIBUTES -------
--- EXTENT POOL ---   RANK      OPS   RTIME   BYTES   BYTES        OPS   RTIME   BYTES   BYTES     --ARRAY--  MIN    CAP    - RAID -
 ID   ---- TYPE ---    ID      /SEC     /OP    /SEC     /OP       /SEC     /OP    /SEC     /OP     NUM  WDTH  RPM  GBYTES     TYPE

0000  CKD    1Gb      0000   1.6722  0.0065  68,110  40,731     2.4952  0.0165  763.6K    306K      1      6  N/A     1,800  RAID 5

0001  CKD    1Gb      0001   0.0045  0.0216   207.7  46,261     0.1909  0.1569  11,906  62,363      1      6  N/A     1,800  RAID 5

0002  CKD    1Gb      0002   0.0005  0.0080       0       0     0.0747  0.0185   519.1   6,947      1      6  N/A     1,800  RAID 5

0003  CKD    1Gb      0003   0.0404  0.0120   2,111  52,258     0.0275  0.2380   242.3   8,822      1      6  N/A     1,800  RAID 5


----------------------------------------------- ESS SYNCHRONOUS I/O LINK STATISTICS ------------------------------------------------

                             ------ READ OPERATIONS ------  ----- WRITE OPERATIONS ------   --- NVS WRITE OPERATIONS ----
     ----- LINK DESC -----      OPS   RTIME   BYTES      %    OPS    RTIME   BYTES      %      OPS   RTIME    BYTES     %
SSID --- TYPE ---  GEN  WD     /SEC     /OP     /OP   SUCC   /SEC      /OP    /SEC   SUCC     /SEC     /OP     /SEC  SUCC
0080 Optical PCIe    3   8   848.90  9.7000   4,096   99.5      0        0       0      0        0       0        0     0
0081 Optical PCIe    1   0   NO DATA OR ALL DATA IS ZERO
0180 Optical PCIe    1   0   NO DATA OR ALL DATA IS ZERO
0181 Optical PCIe    1   0   NO DATA OR ALL DATA IS ZERO
0280 Optical PCIe    3   8   NO DATA OR ALL DATA IS ZERO
0281 Optical PCIe    1   0   NO DATA OR ALL DATA IS ZERO
0380 Optical PCIe    1   0   NO DATA OR ALL DATA IS ZERO
0381 Optical PCIe    1   0   NO DATA OR ALL DATA IS ZERO
PRODUCED BY CMF ANALYZER (v.r.mm  RSL yymm )                       ESS STATISTICS REPORT                           RPTSEQ     3 PAGE      6
BMC SOFTWARE, INC.                                        BMC SOFTWARE, INC.                            REPORT DATE: DD MMM YY 11.49
ACTL 22 SEP YY 12.22.57  22 SEP YY 18.44.26                   HOUSTON, TX.                              SYSTEM ID: S0W1     Z v.rr.n

BASED ON REC TYPE/# RECS/# SAMPLES/REC HOURS:  74-8/15/5/1.05
------------------------------------ ESS SERIAL NUMBER: 00000AMAA1   TYPE-MODEL: 002107-921 ----------------------------------------

------------------------------------------------ ESS LINK STATISTICS SECTION --------------------------------------------------

----- ADAPTER -----   LINK TYPE          BYTES      BYTES PER    OPERATIONS     RESP TIME        I/O
 ID   TYPE                              PER SEC     OPERATION      PER SEC     /OPERATION     INTENSITY

0030  FIBRE  2Gb      ECKD READ         632,963           854         741.1             0          12.8
                      ECKD WRITE        111,891         2,815          39.7             0           2.0
                                        -------       -------       -------       -------       -------
                      SUMMARY           744,854           954         780.9             0          14.7

0031  FIBRE  2Gb      ECKD READ           8,964         1,981           4.5             0           0.1
                      ECKD WRITE          2,596         1,579           1.6           0.1           0.1
                                        -------       -------       -------       -------       -------
                      SUMMARY            11,559         1,874           6.2             0           0.3

0100  FIBRE  2Gb      ECKD READ         620,988           843         736.8             0          12.8
                      ECKD WRITE        106,319         2,867          37.1             0           1.8
                                        -------       -------       -------       -------       -------
                      SUMMARY           727,307           940         773.9             0          14.6

0101  FIBRE  2Gb      ECKD READ         774,583         2,582         300.0             0           8.1
                      ECKD WRITE        227,623         1,680         135.5             0           4.7
                                        -------       -------       -------       -------       -------
                      SUMMARY            1,002K         2,301         435.5             0          12.8

0230  FIBRE  2Gb      ECKD READ         626,560           854         733.5             0          12.6
                      ECKD WRITE        117,151         2,904          40.3             0           1.9
                                        -------       -------       -------       -------       -------
                      SUMMARY           743,711           961         773.8             0          14.6

0300  FIBRE  2Gb      ECKD READ         790,745         2,526         313.0             0           8.2
                      ECKD WRITE        226,689         1,748         129.7             0           4.6
                                        -------       -------       -------       -------       -------
                      SUMMARY            1,017K         2,298         442.7             0          12.8


------------------------------------------------ ESS EXTENT POOL STATISTICS SECTION ------------------------------------------------

 --- EXTENT POOL ---    ------- REAL EXTENTS -------
  ID   ---- TYPE ---    CAPACITY    EXTENT     ALLOC
                        (GBYTES)     COUNT   EXTENTS

 0000  CKD    1Gb          1,560     1,771     1,771

 0001  CKD    1Gb          1,560     1,771     1,771


---------------------------------------------------- ESS RANK STATISTICS SECTION ---------------------------------------------------

                      RAID   ------ READ OPERATIONS -------     ------ WRITE OPERATIONS ------     --------- RANK ATTRIBUTES -------
--- EXTENT POOL ---   RANK      OPS   RTIME   BYTES   BYTES        OPS   RTIME   BYTES   BYTES     --ARRAY--  MIN    CAP    - RAID -
 ID   ---- TYPE ---    ID      /SEC     /OP    /SEC     /OP       /SEC     /OP    /SEC     /OP     NUM  WDTH  RPM  GBYTES     TYPE

0000  CKD    1Gb      0000   1.6722  0.0065  68,110  40,731     2.4952  0.0165  763.6K    306K      1      6  N/A     1,800  RAID 5

0001  CKD    1Gb      0001   0.0045  0.0216   207.7  46,261     0.1909  0.1569  11,906  62,363      1      6  N/A     1,800  RAID 5

0002  CKD    1Gb      0002   0.0005  0.0080       0       0     0.0747  0.0185   519.1   6,947      1      6  N/A     1,800  RAID 5

0003  CKD    1Gb      0003   0.0404  0.0120   2,111  52,258     0.0275  0.2380   242.3   8,822      1      6  N/A     1,800  RAID 5

ESS Statistics Report field descriptions

The table below describes each field in the ESS Statistics Report.

Field

Description


ESS SERIAL NUMBER

serial number of the primary control unit

TYPE-MODEL

type and model of the primary control unit

ESS Link Statistics Section

Note

z/OS does not return any statistics to CMF for ESCON adapters that are connected to Enterprise Storage Servers (ESS). As a result, no ESCON adapters can appear in this section.

ADAPTER

  • ID—adapter ID
  • TYPE—adapter type and link speed; for example, FIBRE 2Gb

Note

??? is displayed if type is unknown.

LINK TYPE

type of I/O handled by the adapter:

  • ECKD—extended count key data (statistics not available for 2105 ESS model)
  • PPRC—Peer-to-Peer Remote Copy
  • SCSI—small computer system interface

Note

CMF MONITOR cannot identify link type if there is no activity; in this case, NO DATA OR ALL DATA IS ZERO is displayed.

The SUMMARY line displays the summary of activity in both directions (read and write or send and receive).

OPERATIONS PER SEC

average number of operations completed per second; the meaning of operation depends on the link type:

  • ECKD—one count per command
  • PPRC—one count per command
  • SCSI—one count per read or write

RESP TIME/OPERATION

average response time per operation, in milliseconds

BYTES PER SEC

average number of bytes transferred per second

BYTES PER OPERATION

average number of bytes transferred per operation

I/O INTENSITY

measurement of how busy a link or adapter is

I/O INTENSITY is the response time of all operations divided by elapsed time and measured in milliseconds/second. Because a FICON channel can carry concurrent operations, it is possible for this value to exceed 1000.

ESS Extent Pool Statistics Section

EXTENT POOL

pool of allocation units for logical volumes:

  • ID—extent pool identifier
  • TYPE:—extent pool type, for example, FIBRE 1 Gb or CKD 1 Gb

CAPACITY (GBYTES)

capacity, in gigabytes, of physical storage for real extents in the extent pool; the available capacity for the operating system

EXTENT COUNT

number of extents defined in an extent pool; a discrete number of extents can be used to create volumes

ALLOC EXTENTS

number of extents allocated from the extent pool

ESS Rank Statistics Section

EXTENT POOL

pool of allocation units for logical volumes:

  • ID—extent pool identifier
  • TYPE—extent pool type, for example, FIBRE 1 Gb or CKD 1 Gb

RAID RANK ID

RAID rank identifiers in the extent pool

Note

If RAID RANK ID=POOL, that line represents a summary of all rank values of the entire extent pool. If the EXTENT POOL has only one RAID rank, no summary (POOL) line is generated.

READ OPERATIONS

summary of read operations:

  • OPS/SEC—number of read operations per second
  • RTIME/OP—average response time of read operations in milliseconds
  • BYTES/SEC—average number of bytes read per second
  • BYTES/OP—average number of bytes per read operation

WRITE OPERATIONS

summary of write operations:

  • OPS/SEC—number of read operations per second
  • RTIME/OP—average response time of read operations in milliseconds
  • BYTES/SEC—average number of bytes read per second
  • BYTES/OP—average number of bytes per read operation

ARRAY

  • NUM—number of arrays on the rank
  • WDTH—sum of disk drive modules (DDMs) of a rank, excluding spares of the rank
Example

For a RAID-5 array with 6 data disks and 1 parity disk, ARRAY WDTH is 7; for a RAID-10 with 3 mirrored disks, ARRAY WDTH is 6.

MIN RPM

slowest drive of the rank in units of 1000 RPM (revolutions per minute)

RANK CAP

sum of bytes of a rank

RAID TYPE

RAID type found for the rank, for example, RAID-5 or RAID-10

Note

In the line displaying the average values for the entire extent pool (where RRID=POOL), 'MIXED' is shown if different RAID types have been encountered for the individual ranks in the extent pool.

ESS Synchronous I/O Link Statistics Section (PTF BQM1575 applied)

LINK DESC

  • Type—Link type
  • GEN—Generation to denote link speed
  • WD—Number of PCIe lanes.
    This value is applicable for recent generations. For older generations, zero is displayed.

READ OPERATIONS

  • OPS/SEC—Average number of operations completed per second
  • RTIME/OP—Average response time per operation in milliseconds
  • BYTES/OP—Average number of operations completed per second
  • % SUCC—Percentage of operations that completed successfully

WRITE OPERATIONS

  • OPS/SEC—Average number of operations completed per second
  • RTIME/OP—Average response time per operation in milliseconds
  • BYTES/OP—Average number of operations completed per second
  • % SUCC—Percentage of operations that completed successfully

NVS OPERATIONS

  • OPS/SEC—Average number of operations completed per second
  • RTIME/OP—Average response time per operation in milliseconds
  • BYTES/OP—Average number of operations completed per second
  • % SUCC—Percentage of operations that completed successfully

Related topics

CACHE
ESS
Analyzer-reports


 

Tip: For faster searching, add an asterisk to the end of your partial query. Example: cert*