Appendix A. Report Column Information 89
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.
%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.
Table 20. Device Activity Report Columns (Continued)
Column Header Column ID Description
Table 21. I/O Queue Activity Report Columns
Column Header Column ID Description
CHAN
PATH
CHANPATH Hexadecimal identifier of the online channel path attached to the
physical control units in the LCU group.
CNTL
UNIT
CNTLUNIT Hexadecimal identifier of control units associated with an online
channel path in the LCU group.
LCU LCU Hexadecimal identifier for the LCU.
CONT
RATE
CONTRATE Rate per second that delayed I/O requests are placed on the
CU-HDR.
DEL Q
LNG
DELQLNG Average number of delayed requests on the CU-HDR.
% ALL
CH BSY
ALLCHBSY Percentage of time that all channel paths belonging to the LCU were
busy at the same time.
CHPID
TKN
CHPIDTKN Rate at which the CHPID is processing I/O requests for the LCU.
%DP
BUSY
DPBUSY Level of contention for the director port.
%CU
BUSY
CUBUSY Percentage of time that I/O requests to the devices on this LCU were
delayed because a control unit was busy.
Table 22. Page Data Set Activity (PGSPP) Report Columns
Column Header Column ID Description
S
T
ST Type of data set.
VOLUME VOLUME Volume serial of the volume mounted on the device.
DEV
NUM
DEVNUM Identification of the device on which the data set resides.
