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Device Activity Report (Analyzer report)

The Device Activity Report displays I/O activity by device number.

The report is formatted by device class.

Device classes can be specifically requested or can default to whatever classes are found in the data. Within a device class, devices are sorted as specified by the ORDER parameter on the DEVACT control statement. When devices are sorted by LCU or storage group, there is a summary line for each LCU or storage group.

The Device Activity Report is produced by using the DEVACT Analyzer control statement. The data for this report is obtained by using the DEVICE.

Related topics

DEVICE (Extractor control statements)
DEVACT
Analyzer-reports


Warning

Important

Data is displayed by device class, regardless of how the device data was requested on the Extractor DEVICE control statement.

The following figure shows a sample of the Device Activity Report:

 PRODUCED BY CMF ANALYZER (v.r.mm  RSL yymm )            DEVICE ACTIVITY REPORT                          RPTSEQ     7 PAGE    429
 BMC Software, Inc.                                  REPORT WITH ZHYPERLINK CHANGES                      REPORT DATE: dd mmm yy
 SHFT   INTERVAL                                             LOCATION - XYZ                              SYSTEM ID: SJSC     Z 2.02.0
 ACTL dd mmm yy 20.00.01  dd mmm yy 20.15.02

 BASED ON REC TYPE/# RECS/# SAMPLES/REC HOURS:  74-1/88/901/0.25
-                                                       ------------ AVERAGE TIME IN MSEC ------------- ------ % OF TIME ------
                                                                     INIT   DEV INTER                           DEV              AVG
 DEV    DEVICE  VOLUME  # OF STORAGE   PAV PAV    SSCH  TOTAL       COMND  BUSY -RUPT                     DEV    IN   DEV MOUNT DSETS
 NUM     TYPE   SERIAL  CYLS  GROUP    MX  TYP  PER SEC  RESP  IOSQ  RESP DELAY DELAY  PEND  DISC  CONN  CONN   USE  RESV  PEND ALLOC
 ----- -------- ------ ----- -------- ---- --- -------- ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- -----
00A6CD 33903    MINI29   500 MINISG    1.0 HPV   0.011  0.128     0     0     0 0.064 0.064     0 0.064   0.0   0.0   0.0   0.0   0.0
 0A6CE 33903    MINI2A   500 MINISG    1.0 HPV   0.008  0.146     0     0     0 0.018 0.073     0 0.073   0.0   0.0   0.0   0.0   0.0
 0A6CF 33903    MINI2B   500 MINISG    1.0 HPV   0.011  0.115     0     0     0 0.102 0.064     0 0.051   0.0   0.0   0.0   0.0   0.0

 LCU 0091 ( 61 ACTIVE)                            1.124 0.165     0 0.001     0 0.214 0.068     0 0.098   0.0   0.0   0.0      0  00:

 0A800 33903    VMVOLU 3,339           1.0 HPV       0      0     0     0     0     0     0     0     0   0.0   0.0   0.0   0.0   0.0
 0A801 33903    OAQ012 3,339           1.0 HPV       0      0     0     0     0     0     0     0     0   0.0   0.0   0.0   0.0   0.0
 0A802 33903    OAQ013 3,339           1.0 HPV   0.001  0.896     0     0     0     0 0.128     0 0.768   0.0   0.0   0.0   0.0   0.0
 0A803 33903    DBU007 3,339           1.0 HPV   1.299S 0.216     0     0     0 0.030 0.054 0.014 0.149   0.0   0.0   0.0   0.0   2.0
 0A804 33903    LOB001 3,339           1.0 HPV       0      0     0     0     0     0     0     0     0   0.0   0.0   0.0   0.0   0.0
 0A805 33903    DBU008 3,339           1.0 HPV   1.304S 0.215     0     0     0 0.040 0.053 0.014 0.147   0.0   0.0   0.0   0.0   2.0
 0A806 33903    DBU009 3,339           1.0 HPV   1.301S 0.215     0     0     0 0.070 0.054 0.014 0.147   0.0   0.0   0.0   0.0   2.0
 0A807 33903    DBU010 3,339           1.0 HPV   1.296S 0.319     0     0     0 0.032 0.054 0.117 0.148   0.0   0.0   0.0   0.0   2.0
 0A808 33903    DBU011 3,339           1.0 HPV   1.301S 0.215     0     0     0 0.053 0.053 0.014 0.147   0.0   0.0   0.0   0.0   2.0
 0A809 33903    DBU012 3,339           1.0 HPV   1.304S 0.216     0     0     0 0.050 0.054 0.015 0.148   0.0   0.0   0.0   0.0   2.0
 0A80A 33903    DBU013 3,339           1.0 HPV   1.295S 0.214     0     0     0 0.041 0.053 0.014 0.147   0.0   0.0   0.0   0.0   2.0
 0A80B 33903    DBU015 3,339           1.0 HPV   1.305S 0.213     0     0     0 0.086 0.053 0.014 0.146   0.0   0.0   0.0   0.0   2.0
 0A80C 33903    SYSDB2 3,339           1.0 HPV       0      0     0     0     0     0     0     0     0   0.0   0.0   0.0   0.0   0.0
 0A80D 33903    LOB002 3,339           1.0 HPV       0      0     0     0     0     0     0     0     0   0.0   0.0   0.0   0.0   0.0
 0A80E 33903    OAQ014 3,339           1.0 HPV       0      0     0     0     0     0     0     0     0   0.0   0.0   0.0   0.0   0.0
 0A80F 33903    AZU011 3,339           1.0 HPV       0      0     0     0     0     0     0     0     0   0.0   0.0   0.0   0.0   0.0
 0A810 33903    AZU012 3,339           1.0 HPV       0      0     0     0     0     0     0     0     0   0.0   0.0   0.0   0.0   0.0
 0A811 33903    AZU013 3,339           1.0 HPV       0      0     0     0     0     0     0     0     0   0.0   0.0   0.0   0.0   0.0
 0A812 33903    AZU014 3,339           1.0 HPV       0      0     0     0     0     0     0     0     0   0.0   0.0   0.0   0.0   0.0
 0A813 33903    AZU015 3,339           1.0 HPV       0      0     0     0     0     0     0     0     0   0.0   0.0   0.0   0.0   0.0
 0A814 33903    AZU020 3,339           1.0 HPV       0      0     0     0     0     0     0     0     0   0.0   0.0   0.0   0.0   0.0
 0A815 3390A    DENTST 65.5K           1.0 HPV       0      0     0     0     0     0     0     0     0   0.0   0.0   0.0   0.0   0.0
 0A816 33903    OAQ015 3,339           1.0 HPV       0      0     0     0     0     0     0     0     0   0.0   0.0   0.0   0.0   0.0
 0A817 33903    OAQ016 3,339           1.0 HPV       0      0     0     0     0     0     0     0     0   0.0   0.0   0.0   0.0   0.0
 0A818 33903    OAQ017 3,339           1.0 HPV       0      0     0     0     0     0     0     0     0   0.0   0.0   0.0   0.0   0.0
 0A819 33903    ESDWK2 3,339           1.0 HPV       0      0     0     0     0     0     0     0     0   0.0   0.0   0.0   0.0   0.0
 0A81A 33909    AFR201 60.1K AFRQA     1.0 HPV   0.014  0.768     0     0     0 0.039 0.089     0 0.679   0.0   0.0   0.0   0.0   0.0
 0A81B 33903    HSML27 3,339           1.0 HPV       0      0     0     0     0     0     0     0     0   0.0   0.0   0.0   0.0   0.0


 BASED ON REC TYPE/# RECS/# SAMPLES/REC HOURS:  74-1/88/901/0.25
-------------------------------------------------------- SYNCHRONOUS I/O -------------------------------------------------------
                                 ---- ACTIVITY RATE ----  -RESPONSE TIME (MS)- --TRANSFER RATE-  -------- % OF REQUESTS --------
 DEV    DEVICE  VOLUME STORAGE   -- SYNCH I/O --  ASYNCH  --SYNCH I/O-- ASYNCH  --MB / SECOND--          CACHE  LINK --REJECTED-
 NUM     TYPE   SERIAL  GROUP       READ   WRITE     I/O    READ  WRITE    I/O    READ   WRITE   SUCCESS  MISS  BUSY  READ WRITE
 ----- -------- ------ --------  ------- ------- -------  ------ ------ ------  ------- -------  ------- ----- ----- ----- -----
00A803 33903    DBU007             3.152   2.866   1.299   0.021  0.011  0.216    0.013   0.001    95.12 0.281 0.386 0.930 3.282
 0A805 33903    DBU008             3.145       0   1.304   0.021      0  0.215    0.013       0    99.61 0.035     0 0.352     0
 0A806 33903    DBU009             3.144       0   1.301   0.021      0  0.215    0.013       0    99.61 0.035     0 0.352     0
 0A807 33903    DBU010             3.155       0   1.296   0.021      0  0.319    0.013       0    99.61 0.035     0 0.351     0
 0A808 33903    DBU011             3.147       0   1.301   0.021      0  0.215    0.013       0    99.61 0.035     0 0.351     0
 0A809 33903    DBU012             3.147       0   1.304   0.021      0  0.216    0.013       0    99.61 0.035     0 0.351     0
 0A80A 33903    DBU013             3.154       0   1.295   0.022      0  0.214    0.013       0    99.61 0.035     0 0.351     0
 0A80B 33903    DBU015             3.143       0   1.305   0.021      0  0.213    0.013       0    99.61 0.035     0 0.352     0
 0A872 33903    DBU001             6.264       0   2.606   0.021      0  0.226    0.026       0    99.61 0.035     0 0.353     0
 0A875 33903    DBU002             6.295       0   2.599   0.021      0  0.222    0.026       0    99.61 0.035     0 0.351     0
 0A876 33903    DBU003             6.643       0   2.861   0.022      0  0.253    0.027       0    95.91 3.768     0 0.321     0
 0A877 33903    DBU004             6.301       0   2.596   0.022      0  0.217    0.026       0    99.61 0.035     0 0.351     0
 0A878 33903    DBU005             6.293       0   2.601   0.023      0  0.215    0.026       0    99.61 0.035     0 0.352     0
 0A879 33903    DBU006             3.142       0   1.303   0.021      0  0.216    0.013       0    99.61 0.035     0 0.352     0

 LCU 0093                         60.124   2.866  24.970   0.022  0.011  0.227    0.246   0.001    98.77 0.465 0.038 0.406 0.326

 0AA4B 33903    DBU014             3.149       0   1.299   0.021      0  0.214    0.013       0    99.61 0.035     0 0.351     0

 LCU 0095                          3.149       0   1.299   0.021      0  0.214    0.013       0    99.61 0.035     0 0.351     0



Device Activity Report field descriptions

The following table describes each field in the Device Activity Report.

Field

Description

Average Time in MSEC section

DEV NUM

five-digit hexadecimal number that identifies this device

An asterisk (*) following this number indicates that the online/offline status of the device changed during the report interval.

DEVICE TYPE

type of the physical I/O device on which the volume is mounted

VOLUME SERIAL

volume serial number of the last volume that was mounted on this device; applicable only to DASDs and tape drives

# OF CYLS

number of cylinders on the device

STORAGE GROUP

name of the storage group that the DASD is assigned to if it is managed by SMS

PAV MX

number of exposures (base and aliases) of a Parallel Access Volume (PAV); applicable only to DASDs

  • For regular PAV, this number is the value at the end of the report interval. An asterisk (*) following this number indicates that the number of exposures changed during the report duration.
  • For HyperPAV, this number is the average value during the report interval.
Warning

Important

If a device changes PAV mode during a reporting interval, the HyperPAV mode will take precedence over the PAV mode, and only the HyperPAV information for that device will be reflected.

PAV TYP

indicates the operating mode of the PAV

  • PAV for regular PAV
  • HPV for HyperPAV
Warning

Important

If a device changes PAV mode during a reporting interval, the HyperPAV mode will take precedence over the PAV mode, and this field will contain HPV.

SSCH PER SEC

rate per second at which SSCH instructions issued for this device were completed successfully

OFFLINE is printed under this column if the device was offline during the entire report interval. If the online/offline status of a device changed during a recording interval, the device is considered offline and its data is skipped for that particular interval.

Warning

Important

  • In the LCU Summary Line, this field contains the average SSCH per second for all devices that are online to the LCU.
  • S is appended to the rate to indicate whether a device includes synchronous I/O.

TOTAL RESP

average number of milliseconds that are required by the device to complete an I/O request (including IOSQ, pending, connect, and disconnect time); commonly known as response time

IOSQ

average number of milliseconds of delay that an I/O request encountered because the device was busy performing an I/O from the local system

INIT COMND RESP

average number of milliseconds of delay that an I/O request encountered, beginning from when the first command of the channel program is sent to the device until the device indicates that it has accepted the command; this delay is part of pending time

Data is available only on a z990 or later processor.

DEV BUSY DELAY

average number of milliseconds of delay that an I/O request encountered because the device was busy due to I/O from another system; this delay is part of pending time

INTERRUPT DELAY

the average amount of time, in milliseconds per I/O request, that the I/O completion interrupt was delayed because no logical central processor (LCP) was available to accept the interrupt

A value for this field appears for devices attached to IBM zEnterprise EC12 (zEC12) and later servers. Otherwise, N/A appears.

PEND

average number of milliseconds that an I/O request must wait for hardware, such as an available channel path or control unit, as well as time between the SSCH pending at the channel and the device active on the subchannel

This time also includes delays caused by another processor that is reserving this device in a shared DASD environment.

DISC

average number of milliseconds during which the device was processing an SSCH instruction but not transferring data

CONN

average number of milliseconds during which the device was processing an SSCH instruction and transferring data

DEV CONN

percent of time during the measurement interval that the device was connected to a channel path 1

DEV IN USE

percent of time during the measurement interval that the device was in use; this number includes device connect and disconnect time 1

DEV RESV

percent of time during the measurement interval that this device was reserved by the processor on which the BMC AMI Ops Monitor for CMF Extractor was executing

MOUNT PEND

percent of time that the device had a mount pending request outstanding; this number is reported only for DASD devices

AVG DSETS ALLOC

average number of data sets allocated on this device; this field reports only on DASDs

NUM OF MOUNTS

number of mounts for the tape device for the reporting interval

An asterisk (*) to the left of this value indicates that a mount pending condition existed at the start of the recording interval. An asterisk (*) to the right of the value indicates that a mount pending condition existed at the end of the recording interval.

For the LCU, the field contains the total number of mounts for all devices on the LCU for the reporting interval.

AVG MOUNT TIME

average mount pending time for the tape device

For the LCU, the field contains the average mount pending time for all devices on the LCU.

The field is reported as hh:mm:ss; the maximum time reported in this field is 99:59:59.

TIME DEVICE ALLOC

total time that the tape device was allocated during the reporting interval

For the LCU, the field contains the average allocation time for all active devices on the LCU during the reporting interval.

The field is reported as hh:mm:ss; the maximum time reported in this field is 99:59:59.

LCU

total/summary line for all devices on this LCU

n ACTIVE

number of devices on this LCU that had some I/O activity

NOT READY

percent of time that the device was not ready for use; not applicable to DASD or tape devices

Synchronous I/O section

ACTIVITY RATE

  • SYNCH I/O—Rate per second of successful synchronous I/O read or write requests
  • ASYNCH I/O—Rate per second of asynchronous I/O requests

RESPONSE TIME

  • SYNCH I/O—Average response time in milliseconds of successful synchronous read or write requests
  • ASYNCH I/O—Average response time in milliseconds of asynchronous I/O requests

TRANSFER RATE

Average transfer rate in megabytes per second of read or write requests

% OF REQUESTS

  • SUCCESS—Percentage of requests that completed successfully
  • CACHE MISS—Percentage of requests that encountered the cache-miss condition (read requests only)
  • LINK BUSY—Percentage of requests that were rejected due to the link-busy condition
  • REJECTED—Percentage of requests that were rejected due to reasons other than link-busy condition

1 The calculation for this field includes HyperPAV MX values.

 

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

BMC AMI Ops Monitor for CMF 6.3