Supplied with the Coupling Facility (CF) statistics subcomponent, this attribute group provides hourly statistics about coupling facility in a sysplex. It is based on the MVSPM_CF_REQUEST_H table, and its data comes from SMF type 74, subtype 4 records.
The following comprises a list of the attributes for this attribute group. The name in bold text shows how the attribute appears in the Tivoli Enterprise Portal.
Node The managed system name of the agent.
Timestamp The value is the time collected from the agent system when the data row was built and sent from the agent to the Tivoli Enterprise Monitoring Server (or stored for historical purposes). It represents the local time zone of the agent system.
Date Date of the mid measurement. From SMF74DAT, SMF74IST, and SMF74INT.
Time Time (rounded down as specified in the MVSPM_TIME_RES table of the mid measurement. From SMF74DAT, SMF74IST, and SMF74INT.
Sysplex Name Sysplex name (as defined in ECVTSPLX). From SMF74XNM.
MVS System ID MVS system identification. From SMF74SID.
Period Name Name of the period. This is derived using fields SMF74DAT, SMF74IST, and SMF74INT from the record as parameters in the PERIOD function.
Structure Name Name of structure connected to this system or allocated in this coupling facility. From R744QSTR or R744SNAM.
CF Name Name of coupling facility. From R744FNAM.
Asynchronous Requests Average Time Average time required to satisfy an asynchronous CF request, in microseconds. Calculated as SERVICE_ASYNC_SEC/REQ_ASYNC_NO.
Asynchronous Requests per second Asynchronous requests completeted per second. Calculated as REQ_ASYNC_NO/MEASURED_SEC.
Synchronous Requests Average Time Average time required to satisfy a synchronous CF request, in microseconds. Calculated as SERVICE_SYNC_SEC/REQ_SYNC_NO.
Synchronous Requests per second Synchronous requests completeted per second. Calculated as REQ_SYNC_NO/MEASURED_SEC.
CF Level Level of coupling facility. From R744FLVL.
CF Model Model of coupling facility. From R744FMOD.
CF Version Version of coupling facility. From R744FVER.
Changed Operations Percent Percentage of changed operations from synchronous to asynchronous. Calculated as REQ_SYNC_ASYNC/(REQ_SYNC_NO+REQ_ASYNC_NO)*100.
Changed Operations per second Numbere of changed operations per second Calculated as REQ_SYNC_ASYNC/MEASURED_SEC.
Delayed Requests Percent Percentage of delayed requests. Calculated as (PATH_CONTENTION+SUBCH_CONTENTION+REQ_QUEUED_NO+ REQ_DELAYED_NO)/(REQ_SYNC_NO+REQ_ASYNC_NO+REQ_SYNC_ASYNC)*100.
Delayed Dump Requests Percent Percentage of delayed requests for dump serialization. Calculated as REQ_DELAYED_NO/ (REQ_SYNC_NO+REQ_ASYNC_NO+REQ_SYNC_ASYNC)*100.
Path Busy Rejections per second Number of requests rejected per second for path busy. Calculated as PATH_CONTENTION/MEASURED_SEC.
Path Busy Delays Percent Percentage of delayed requests for path busy. Calculated as PATH_CONTENTION/ (REQ_SYNC_NO+REQ_ASYNC_NO+REQ_SYNC_ASYNC)*100.
Peer Subchannel Wait Percent Percentage of requests waiting for peer subchannel conditions. Valid only for duplexed structures. Calculated as PEER_WAIT_SCH_NO/ (REQ_SYNC_NO+REQ_ASYNC_NO+REQ_SYNC_ASYNC)*100.
Peer Completion Wait Percent Percentage of requests waiting for peer completion conditions. Valid only for duplexed structures. Calculated as PEER_WAIT_CMP_NO/ (REQ_SYNC_NO+REQ_ASYNC_NO+REQ_SYNC_ASYNC)*100.
Delayed Queue Requests Percent Percentage of delayed requests for queue. Calculated as REQ_QUEUED_NO/ (REQ_SYNC_NO+REQ_ASYNC_NO+REQ_SYNC_ASYNC)*100.
Request Rate per second Requests completed per second. Calculated as (REQ_SYNC_NO+REQ_ASYNC_NO+REQ_SYNC_ASYNC)/ MEASURED_SEC.
Structure Type Structure type Identifier. Calculated as the max of R744STYP.
Subchannel Busy Rejections per second Number of requests rejected per second because subchannel was busy. Calculated as SUBCH_CONTENTION/MEASURED_SEC.
Subchannel Busy Delays Percent Percentage of delayed requests because subchannel was busy. Calculated as SUBCH_CONTENTION/ (REQ_SYNC_NO+REQ_ASYNC_NO+REQ_SYNC_ASYNC)*100.