The KM5 Device Resource History attribute group for near-term history. These attributes provide information about the device, as well as the time periods for operations.
Active Percent (RMF metric) The percentage of time during the report interval when the device was active. Computation is ACT% = (PEND% + CON% + DSC%). A valid value is an integer. A value of -1 indicates "Unavailable".
RMF Attribute Name: DVRPACTV
Activity Rate (RMF metric) The rate per second, to one decimal place, that I/O instructions (SSCH, RSCH, and HSCH) to a device completed successfully. Device Activity Rate = (#I/O Instructions / Range Time). Where Range Time is <data-range unit="seconds">600</data-range> in the XML report. A valid value is a number to one decimal place accuracy. A value of -1 indicates "Unavailable".
RMF Attribute Name: DVRACTRT
Command Response Percent (RMF metric) The command response time delay (CMR). CMR is the percentage of time during the report interval when the first command of an I/O instruction of the channel program is sent to the device, until the device indicates that it accepted the command. A valid value is an integer. A value of -1 indicates "Unavailable".
RMF Attribute Name: DVRPCMRT
Connect Percent (RMF metric) The percentage of time the device was connected to a channel path to actually transfer data between the device and storage. A valid value is an integer. A value of -1 indicates "Unavailable".
RMF Attribute Name: DVRPCONN
Control Unit Busy Percent (RMF metric) The percentage of time during the report interval when there is I/O request delay because the control unit was busy. A valid value is an integer. A value of -1 indicates "Unavailable".
RMF Attribute Name: DVRPCUBT
Control Unit Type (RMF metric) The control unit type. For example, 2107. A valid value is a string of up to 6 characters.
RMF Attribute Name: DVRPIDEN
Device Busy Percent (RMF metric) The percentage of time during the report interval when the channel subsystem measured I/O request delay because the device was busy. The device busy delay (DB) is a component of the Pending Time Percent. A valid value is an integer. A value of -1 indicates "Unavailable".
RMF Attribute Name: DVRPDVBT
Device Number (RMF metric) The device number where the volume is mounted. A valid value is a string of up to 4 characters.
RMF Attribute Name: DVRPDEVN
Device Type (RMF metric) The device type. For example, 33909. A valid value is a string of up to 6 characters.
RMF Attribute Name: DVRPIDEN
Disconnect Percent (RMF metric) The percentage of time the device has an active channel program and is disconnected (not transferring data). Disconnect time includes seek time, normal rotation delay time, and extra rotation delay because the channel was busy when the device needed to reconnect. A valid value is an integer. A value of -1 indicates "Unavailable".
RMF Attribute Name: DVRPDISC
IO Intensity (RMF metric) The number of milliseconds per second that applications waited for the device. The value can exceed 1000, which is an indicator that the device experiences a heavy load and requires a long time to satisfy the requests. The value also includes the IOS Queue Time. If the activity rate is low (for example, less than 1 SIO per second) and the IOS Queue Time is high, the value is not meaningful. Use this measurement for devices with a considerable load (more than 2 SIOs per second). A valid value is an integer. A value of -1 indicates "Unavailable".
RMF Attribute Name: DVRIOINT
IOS Queue Time (RMF metric) The average number of milliseconds, to one decimal place or a tenth of a millisecond, an I/O request must wait on an IOS queue before an SSCH instruction can be issued. Delay occurs when a previous request to the same subchannel is in progress. A valid value is a number to one decimal place accuracy. A value of -1 indicates "Unavailable".
RMF Attribute Name: DVRIQTHP
Logical Control Unit (RMF metric) The logical control unit number. A valid value is a string of up to 4 characters.
Managed System The z/OS operating system in your enterprise that an OMEGAMON for z/OS agent is monitoring. A valid value is a string of up to 32 characters.
PAV Count (RMF metric) The number of parallel access volumes (base and alias) which were available at the end of the reporting interval. If the number changed during the interval, it is followed by an '*'. For example, 2*. If the device is a HyperPAV base device, the number is followed by an 'H'. For example, 1.2H. A valid value is a string of up to 6 characters.
Pending Percent (RMF metric) The percentage of time all I/O requests wait in the logical control unit queue (CU-HDR) before there is an available path. Pending time includes the time spent waiting for a channel, control unit, or head of string, or for the actual device (if it is a shared device that is reserved by another processor). A valid value is an integer. A value of -1 indicates "Unavailable".
RMF Attribute Name: DVRRPEND
Recording End Time Recording time of data represented by a given row. For RMF-based near-term history this will be the time of the end of the RMF Monitor III reporting interval. This time is displayed in the following format:
mm/dd/yy hh:mm:ss (Tivoli Enterprise Portal) or yy/mm/dd hh:mm:ss (3270)
Where:
This time is stored as a string no longer than 16 characters in the format CYYMMDDHHMMSSmmm (as in 1020315064501000 for 03/15/02 06:45:01) where:
Recording Start Time Interval start recording time of data represented by a given row. This time is displayed in the following format:
mm/dd/yy hh:mm:ss (Tivoli Enterprise Portal) or yy/mm/dd hh:mm:ss (3270)
Where:
This time is stored as a string no longer than 16 characters in the format CYYMMDDHHMMSSmmm (as in 1020315064501000 for 03/15/02 06:45:01) where:
Response Time (RMF metric) The average response time, in milliseconds to one decimal place, that the device required to complete an I/O request. A valid value is a number to one decimal place accuracy. A value of -1 indicates "Unavailable".
RMF Attribute Name: DVRRPTHP
RMF Status Status indications for availability of RMF and DEVR data. A valid value is an integer. Values appear on the workspace as follows:
Sample Period Sample period in seconds. A valid value is an integer.
SMFID The System Management Facility (SMF) identifier for the z/OS system where the OMEGAMON for z/OS monitoring agent collected the data. A valid value is a string of up to 4 characters.
Status (RMF metric) Status. An S in the first line of this column indicates that the device was generated during system generation as a shared device. A valid value is a string of up to 5 characters.
RMF Attribute Name: DVRPSTAT
Switch Port Busy Percent (RMF metric) The percentage of time during the report interval when there is I/O request delay because the control unit was busy. A valid value is an integer. A value of -1 indicates "Unavailable".
RMF Attribute Name: DVRPCUBT
Volume (RMF metric) The device volume serial number. A valid value is a string of up to 6 characters.
RMF Attribute Name: DVRPVOLU