Device Activity Report
The DEVICE or DEV control statement produces the Device Activity Report. This report is available in both Total and Delta mode.
The header of this report shows the date and time the data was collected, the report mode, and the interval. Each row in this report reflects the activity of a single device. The rows of this report are grouped by device class, and then sorted by device number within each class. The following figure is an example of the Device Activity Report.
BMC SOFTWARE, INC. REPORT DATE: MM/DD/YY HH:MM:SS
MM/DD/YY HH:MM:SS TOTAL (00:33) USER TITLE SYSTEM: QAP1 1 Z v.rr.n
EXTRACTOR INTERVAL - START=MM/DD/YY 03:00:00 LENGTH=15:00 I%= 4
STG VOLSER DEV DEV LCU C ACTV RESP IOSQ CMR DB INT PEND DISC CONN CU Q %DEV %D PAV PAV
GRP CLS NUM S RATE TIME TIME DLY DLY DLY TIME TIME TIME TIME UTIL RV MX TYP
QPSH01 DAS 06467 044 0 47.0 1.1 0.0 0.0 0.0 0.1 0.0 0.9 0.0 4.6 0.0 1 PAV
QPMV01 DAS 06478 044 0 0.6 0.2 0.0 0.0 0.0 0.1 0.0 0.1 0.0 0.0 0.0 1 PAV
DB2S QSD101 DAS 0A000 048 0 1.0 0.3 0.0 0.0 0.0 0.1 0.0 0.1 0.0 0.0 0.0 1 PAV
DB2M QSD201 DAS 0A001 048 0 1.3 0.3 0.0 0.0 0.0 0.1 0.0 0.1 0.0 0.0 0.0 1 PAV
DB2L QSD302 DAS 0A002 048 0 0.7 0.2 0.0 0.0 0.0 0.1 0.0 0.1 0.0 0.0 0.0 1 PAV
DB2CAT QSDC01 DAS 0A003 048 0 0.7 0.3 0.0 0.0 0.0 0.1 0.0 0.1 0.0 0.0 0.0 1 PAV
DB2WORK QSDW01 DAS 0A004 048 0 0.7 0.1 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.0 1 PAV
DB2ARCLG QSLD02 DAS 0A005 048 0 0.7 0.1 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.0 1 PAV
IMSS QSI101 DAS 0A006 048 0 0.7 0.2 0.0 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0 1 PAV
IMSM QSI201 DAS 0A007 048 0 0.7 0.3 0.0 0.0 0.0 0.1 0.0 0.2 0.0 0.0 0.0 1 PAV
IMSL QSI301 DAS 0A008 048 0 0.7 0.2 0.0 0.0 0.0 0.1 0.0 0.1 0.0 0.0 0.0 1 PAV
IMSLOG QSLI01 DAS 0A009 048 0 0.7 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1 PAV
MISC QSXX03 DAS 0A00A 048 0 15.2 0.5 0.0 0.0 0.0 0.2 0.0 0.2 0.0 0.5 0.0 1 PAV
PRODLOG QSLP01 DAS 0A00B 048 0 0.7 0.2 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.0 1 PAV
PRODUCTS QSP101 DAS 0A00C 048 0 0.7 0.2 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.0 1 PAV
PRODUCTM QSP202 DAS 0A00D 048 0 2.5 0.3 0.0 0.0 0.0 0.1 0.0 0.1 0.0 0.0 0.0 1 PAV
PRODUCTL QSP302 DAS 0A00E 048 0 0.7 0.2 0.0 0.0 0.0 0.1 0.0 0.1 0.0 0.0 0.0 1 PAV
The following table lists the header, ID (used when specifying keywords), and a brief description of each column in this report.
Column header | Column ID | Description |
|---|---|---|
STG GRP | STGGRP | Name of the storage group to which the device belongs |
VOLSER | VOLSER | Volume serial of the volume mounted on the device |
DEV CLS | DEVCLS | Class of the device |
DEV NUM | DEVNUM | Device number, which includes the subchannel set ID. (snnnn) - 's' is the subchannel set ID and 'nnnn' is the device number. |
LCU | LCU | Hexadecimal identification for the LCU to which the device belongs |
C S | CHANSSID | Subsystem ID for the channel to which the device is connected (between 0 and 3) A value for this column appears on IBM z/OS 2.1 and later systems. On earlier systems, a value of 0 appears. |
ACTV RATE | ACTVRATE | Rate at which SSCH instructions issued to the device are being completed successfully |
RESP TIME | RESPTIME | Average number of milliseconds the device required to complete an I/O request |
IOSQ TIME | IOSQTIME | Average number of milliseconds that I/O requests were queued by IOS before processing |
CMR DLY | CMR DLY | Average Initial Command Response Delay field--contains the average number of milliseconds that a successfully initiated start or resume function needs until the device indicates that the first command is acceptedThis value is present only when CMFMON is running on z990 or later-model processors. When present, the value is calculated as follows: Average Initial Command Response delay = Control unit busy delay time / Measurement event count |
DB DLY | DBDLY | Average number of milliseconds that an I/O request is being delayed because the device is busy |
INT DLY | INTDLY | Average amount of time, in milliseconds per I/O request, that I/O completion interrupts were delayed because no logical central processor (LCP) was available to accept them A value for this field appears for devices attached to IBM zEnterprise EC12 (zEC12) and later servers. Otherwise, N/A appears. |
PEND TIME | PENDTIME | Average number of milliseconds that an I/O request remains queued in the channel |
DISC TIME | DISCTIME | Average number of milliseconds that the device had an active I/O request before it was disconnected from the channel path |
CONN TIME | CONNTIME | Average number of milliseconds that the device was connected to the channel path and actively transferring data between the device and central storage |
CU Q TIME | CUQTIME | Average control unit queue time, in milliseconds per I/O request A value for this field appears for devices attached to IBM zEC12 and later servers. Otherwise, N/A appears. |
%DEV UTIL | DEVUTIL | Percentage of time that the device was in use |
%D RV | DRV | Percentage of time that a shared device was reserved by the processor on which CMFMON was started |
PAV MX | PAVMX | Number of exposures (base and aliases) of a Parallel Access Volume (PAV)
|
PAV TYP | PAVTYPE | Indicates the operating mode of the PAV
|
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