Coupling facility manager data records

Use this topic as a reference to the format of the coupling facility manager data records.

The format of the coupling facility manager statistics record is described in the following table and in assembler macro thlqual. SCSQMACS(CSQDQEST) and C header file thlqual.SCSQC370(CSQDSMFC). The field names in C are all in lowercase, for example qest, qestid.

If the queue manager was not started as a member of a queue sharing group, no data is recorded in this record.

Offset: Dec	Offset: Hex	Type	Len	Name	Description
0	0	Structure	4104	QEST	CF manager statistics
0	0	Bitstring	2	QESTID	Control block identifier
2	2	Integer	2	QESTLL	Control block length
4	4	Character	4	QESTEYEC	Control block eye catcher
8	8	Character	4096	QESTZERO	QEST part cleared on occasion
8	8	Character	64	QESTSTUC (0:63)	Array (one entry per structure)
8	8	Character	12	QESTSTR	Structure name
20	14	Integer	4	QESTSTRN	Structure number
24	18	Integer	4	QESTCSEC	Number of IXLLSTE calls
28	1C	Integer	4	QESTCMEC	Number of IXLLSTM calls
32	20	Character	8	QESTSSTC	Time spent doing IXLLSTE calls
40	28	Character	8	QESTMSTC	Time spent doing IXLLSTM calls
48	30	Integer	4	QESTRSEC	Number of IXLLSTE redrives
52	34	Integer	4	QESTRMEC	Number of IXLLSTM redrives
56	38	Integer	4	QESTSFUL	Number of structure fulls
60	3C	Integer	4	QESTMNUS	Maximum number of entries in use
64	40	Integer	4	QESTMLUS	Maximum number of elements in use
68	44	Character	4	*	Reserved
4104	1008	Character	0	*	End of control block

The data contains information for each coupling facility list structure, including the CSQ_ADMIN structure, that the queue manager could connect to during the statistics interval. The information for each structure includes the following:

• The number of and cumulative elapsed times for IXLLSTE and IXLLSTM requests.
• The number of times a request had to be retried because of a timeout.
• The number of times a 'structure full' condition occurred.

Parent topic: Interpreting IBM MQ for z/OS performance statistics