CF Systems attributes

The CF Systems attribute group monitors coupling facility CPU and storage demands.

Allocated Storage Amount of storage allocated to the Coupling Facility currently in use. Allocated storage is the total number of 4K pages assigned to the coupling facility. Valid value is an integer in the range of 0 through 2147483647, and can include the use of the *AVG, *MAX, *MIN, or *SUM functions. An example is 59328.

Async Avg Service Time (RMF metric) Average time required to satisfy an asynchronous coupling facility request for this structure. This value also includes operations that started synchronously but completed asynchronously.

Async Delay Percent (RMF metric) Percentage of asynchronous hardware operations for this structure being delayed by either subchannel contention or dump serialization. This value can exceed 100% if there are several delays for one request.

Asynchronous Request Per Minute Rate of asynchronous operations for this system during this interval period. Valid value is a numeric value to one decimal point precision.

Average Failed Operation Time Average service time for unsuccessful operations, in microseconds. Valid value is an integer in the range of 0 through 2147483647, to one decimal point precision, and can include the use of the *MAX, *MIN, or *SUM functions. An example is 211.

Avg Shared Processor Weight (RMF metric) Average weight of shared logical processors.

Average Sync Operation Delay Average waiting time for a subchannel to be available for a synchronous operation, in microseconds. Valid value is a number in the range of 0 through 2147483647, to one decimal point precision, and can include the use of the **MAX, *MIN, or *SUM functions. An example is 38.7.

CF Level Coupling facility architected function level. Valid value is an integer in the range of 0 through 2147483647. An example is 3.

CF Name Name of the coupling facility. Valid format is a simple text string from 1 through 8 characters; for example, COUPLER1.

CF Utilization Percent (RMF metric) The percentage of CF processor time used by the structure. The sum of the values in this column is less than 100%, because not all CF processor time is attributable to structures.

Connected MVS System Count The number of z/OS images connected to the facility. Valid value is an integer in the range of 0 through 2147483647, and can include the use of the *AVG, *MAX, *MIN, or *SUM functions. An example is 6.

CPU Percent Percentage of CPU utilization by the coupling facility. Valid value is a number in the range of 0.0 through 100.0, to one decimal point precision, and can include the use of the *AVG, *MAX, *MIN, or *SUM functions. An example is 37.5.

Dedicated Logical Processors (RMF metric) Number of logical processors dedicated to this coupling facility. The format is an integer.

Defined Logical Processors (RMF metric) Number of logical processors defined to this coupling facility. The format is an integer.

Dump Table in Use Amount (a count of 4K pages) of reserved dump storage in the coupling facility currently holding dumps. This value is not a percentage. Valid value is an integer in the range of 0 through 2147483647, and can include the use of the *AVG, *MAX, *MIN, or *SUM functions. An example is 0.

Dump Table Size Amount of storage in the coupling facility reserved for dump tables. The size is expressed as a 4K page count. Valid value is an integer in the range of 0 through 2147483647, and can include the use of the *AVG, *MAX, *MIN, or *SUM functions. An example is 512.

Free Control Space Amount of control storage in the named coupling facility that is not assigned to structures or dump space, given as a 4K page count. Valid value is an integer in the range of 0 through 2147483647, and can include the use of the *AVG, *MAX, *MIN, or *SUM functions. An example is 4416.

Highest 1 Asynch Request Structure Name of the structure with the highest Asynchronous Requests per Minute count followed by its associated count value. Valid value is a 26 character string.

Highest 2 Asynch Request Structure Name of the structure with the second highest Asynchronous Requests per Minute count followed by its associated count value. Valid value is a 26 character string.

Highest 3 Asynch Request Structure Name of the structure with the third highest Asynchronous Requests per Minute count followed by its associated count value. Valid value is a 26 character string.

Highest 1 Synch Request Structure Name of the structure with the highest Synchronous Requests per Minute count followed by its associated count value. Valid value is a 26 character string.

Highest 2 Synch Request Structure Name of the structure with the second highest Synchronous Requests per Minute count followed by its associated count value. Valid value is a 26 character string.

Highest 3 Synch Request Structure Name of the structure with the third highest Synchronous Requests per Minute followed by its associated count value.

I/Os Per Second Sustained I/O rate (I/O requests per second) by the coupling facility. Valid value is a number in the range of 0 through 2147483647, to one decimal point precision, and can include the use of the *AVG, *MAX, *MIN, or *SUM functions. An example is 27.6.

Managed System A sysplex in your enterprise that is being monitored by OMEGAMON for z/OS agents. Valid value is a character string with a maximum length of 32 bytes, in the format <plexname>:MVS:SYSPLEX.

Maximum Sub Channels Count of subchannels that, if they were available, could be used for operations. Valid value is an integer in the range 0 to 2 billion. Values are rarely above 10. An example is 4.

Model (RMF metric) The processor model for this coupling facility. The format is a alphanumeric string no longer than 6 characters.

Paths Available (RMF metric) Number of physical paths (coupling facility channels) available to transfer coupling facility requests between this system and the coupling facility. The format is an integer.

Paths Delay Percent (RMF metric) Percentage of all coupling facility requests that were rejected because all paths to the coupling facility were busy. This value can exceed 100% if requests encounter a path busy condition more than once.

A high percentage results in elongated service times which is a reduction of the capacity of the sending processor. If coupling facility channels are being shared among PR/SM partitions, the contention could be coming from a remote partition.

Paths IDs (RMF metric) A list of the hexadecimal identifiers for the channel paths (CHPIDs) that are connected to this coupling facility. The format is a alphanumeric string no longer than 70 characters.

Percent Converted Percentage of the total requests that were converted from synchronous operations to asynchronous operations for this system during this interval period. Valid value is a percentage with one decimal point precision.

Percent of Total Requests Asynch Percentage of the total requests that were asynchronous operations for this system during this interval period. Valid value is a percentage to one decimal point precision.

Percent of Total Requests Synch Percentage of the total requests that were synchronous operations for this system during this interval period. Valid value is a percentage to one decimal point precision.

Percent Utilized Storage Percentage of storage currently being used. Valid value is a numeric value in the range of 0 through 100, to one decimal point precision, and can include the use of the *AVG, *MAX, *MIN, or *SUM functions. An example is 63.5.

Shared Logical Processors (RMF metric) The number of shared logical processors defined to this coupling facility. The format is an integer.

Status Current status of the facility. Valid values are:

Structure Count In Policy Number of structures in the coupling facility that are contained in the current Coupling Facility Resource Management policy. Valid value is an integer in the range of 0 through 2147483647, and can include the use of the *AVG, *MAX, *MIN, or *SUM functions. An example is 31.

Structure Count Out Policy Number of structures in the coupling facility that cannot be added to the current coupling facility resource management policy. Valid value is an integer in the range of 0 through 2147483647, and can include the use of the *AVG, *MAX, *MIN, or *SUM functions. An example is 0.

Subchan Busy Percent (RMF metric) Percentage of the coupling facility subchannel utilization. This value is calculated from the sum of synchronous and asynchronous coupling facility request times related to the MINTIME and to the number of subchannels.

Subchan Delay Percent (RMF metric) Percentage of all coupling facility requests that were rejected because all paths to the coupling facility were busy. This value can exceed 100% if requests encounter a path busy condition more than once.

A high percentage results in elongated service times which is a reduction of the capacity of the sending processor. If coupling facility channels are being shared among PR/SM partitions, the contention could be coming from a remote partition.

Sub Channels Allocated Count of subchannels that this facility has been allocated. Valid value is an integer in the range 0 to 2 billion. Values are rarely higher than 10. An example is 4.

Sub Channels In Use Count of subchannels available for use. Valid value is an integer in the range 0 to 2 billion. Values are rarely higher than 10. An example is 4.

Sync Avg Service Time (RMF metric) The average service time for synchronous requests.

Synchronous Requests Per Minute Rate of synchronous operations for this system during this interval period. Valid value is a number with one decimal point precision.

Synch to Asynch Conversions Per Min Rate of synchronous operations that were converted to asynchronous requests for this system during a one minute period. Valid value is an integer with one decimal point precision.

Total Control Space Total amount of storage in the coupling facility that can be used as control storage. Valid value is an integer in the range of 0 through 2147483647, and can include the use of the *AVG, *MAX, *MIN, or *SUM functions. An example is 59238.

Total Request Count This Interval Total number of synchronous and asynchronous operations for this system during this interval period.

Utilized Storage Percent (RMF metric) Percentage of storage that was in use at the end of the collection interval.

Version (RMF metric) The microcode level of this coupling facility. The format is a alphanumeric string no longer than 4 characters.

Volatility Status 1-byte flag representing the volatility state of storage in the LPAR housing the coupling facility. Valid values are: