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Displaying IMS Device Statistics (RDEV)

Displaying IMS Device Statistics (RDEV)

IMS Device statistics panel

The IMS Device Statistics panel (Figure 51 ) shows information about the direct access devices allocated to IMS regions.

FIGURE 51. RDEV IMS Device Statistics panel

+=========================== IMS Device Statistics ===========================+

| Period: =15:00 M

11:45 to 12:00 on 01/02/97 IMSD |

.

Elap

+-----------------------------------------------------------------------------+ |volser|Unit|I/Os per second| %Dev| Avg q | Resp= IOSQ+ Pend+ Conn+ Disc| Open|

|

|

| Total|

IMS

| util| Length| Time| Time| Time| Time| Time| Dsns|

+------+----+------+--------+-----+-------+-----+-----+-----+-----+-----+-----+

|PRD817| 102|

.9|

|TSO802| 142| |TSO812| 14C| |IPS801| 150|

.7| .4| 2.2|

|IPS804| 194| |TMP812| 1AB|

.7| .0|

|

23.5|

| | |

18.5| 15.7| 23.8|

| |

.0| 20.7|

|

23.5|

| | |

18.5| 15.7| 23.8|

| |

.0| 20.7|

.1| .0| .0| .0| .0| .0|

.0

.05

.0

.05

.0

.01

.0

.00

.0

.06

.0

.00

1.0 .2 .2 .0 1.4 .0

| | | | | |

|

10.8|

| | |

14.3| 12.3| 17.0|

| |

.0| 10.3|

10.6 3.4 10.1 2.9 7.0 .0

| | | | | |

11.8 14.9 13.5 12.8 12.3

.0

+------+----+------+--------+-----+-------+-----+-----+-----+-----+-----+-----+

.************************************************ |Epilog/IMS is not synchronized with PMF .************************************************

|

+=============================================================================+

The fields in the RDEV panel are described below.

volser Unit

Volume serial ID where one or more IMS datasets reside. Unit name for this volser.

I/Os per sec-Total

I/Os per second for IMS and non-IMS datasets (for this unit). This number represents SSCH counts taken from the CMB.

OSAM IMS databases are maintained in separate IMS control blocks and may not be included in this value.

I/Os per sec-IMS

I/Os per second for IMS only dataset activity. This number represents EXCP counts taken from the TCT.

OSAM IMS databases are maintained in separate IMS control blocks and may not be included in this value.

% Dev Util

Percentage of time during the interval when the device was in use. This includes connect/disconnect time (time in I/O operations) and reserved time not involved in I/O operations.

Avg q Length

Average number of requests which were enqueued against this device.

Resp Time

Response time in milliseconds which totals IOSQ, PEND, CONN, and DISC.

IOSQ Time

Average time during interval when SIO was enqueued against this device (in milliseconds).

152

OMEGAMON II for DBCTL Historical Component (EPILOG) Reference Manual Version 510

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