These statistics fields contain the global data collected by the loader domain. The loader domain maintains global statistics to assist the user in tuning and accounting.
These statistics can be accessed online using the COLLECT STATISTICS PROGRAM SPI command, and are mapped by the DFHLDGDS DSECT.
| DFHSTUP name | Field name | Description |
|---|---|---|
| Library load requests | LDGLLR | The number of times the loader issued an MVS™ LOAD
request to load programs from the DFHRPL or dynamic LIBRARY concatenation
into CICS® managed storage. Modules in the LPA are
not included in this value.  The value includes both
program load requests that ran on open TCBs, and program load requests
that used the RO (resource-owning) TCB. Reset characteristic: reset to zero
|
| Library load requests on the RO TCB |
LDGLLRRO |
The number of times the loader issued a program
load request that used the RO (resource-owning) TCB. This value is
a subset of the number of library loads shown by LDGLLR. To calculate
the number of program load requests that ran on open TCBs, subtract
this value from the value shown by LDGLLR. Reset characteristic: reset to zero
|
| Total loading time | LDGLLT | The time taken for the number of library loads
shown by LDGLLR. The value includes both program load
requests that ran on open TCBs, and program load requests that used
the RO (resource-owning) TCB. The DFHSTUP report expresses this time as hours:minutes:seconds.decimals; however, the DSECT field contains a 4-byte field which expresses the time in 16-microsecond units. Reset characteristic: reset to zero
|
| Total loading time on the RO TCB |
LDGLLTRO |
The time taken for the number of library loads
shown by LDGLLRRO. This value is a subset of the time shown by LDGLLT.
To calculate the time taken for program load requests that ran on
open TCBs, subtract this value from the value shown by LDGLLT. The DFHSTUP report expresses this time as hours:minutes:seconds.decimals; however, the DSECT field contains a 4-byte field which expresses the time in 16-microsecond units. Reset characteristic: reset to zero
|
| Average loading time | The average time taken to load a program. The value is an average including both program load requests
that ran on open TCBs, and program load requests that used the RO
(resource-owning) TCB. This value is calculated offline by DFHSTUP
and hence is not available to online users. DFHSTUP expresses this
time as hours:minutes:seconds.decimals. Reset characteristic: none
|
|
| Average loading time on the RO TCB |
|
The average time taken to complete only those
program load requests that used the RO (resource-owning) TCB. This
value is calculated offline by DFHSTUP and hence is not available
to online users. DFHSTUP expresses this time as hours:minutes:seconds.decimals.
Reset characteristic: none
|
| Program uses | LDGPUSES | The number of uses of any program by the CICS system.
Reset characteristic: not reset
|
| Waiting requests | LDGWLR | The number of loader domain requests that are
currently waiting for the loader domain to complete an operation on
the program on behalf of another task. Program load requests might
wait for the following reasons:
Reset characteristic: not reset
|
| Requests that waited | LDGWTDLR | The number of loader domain requests that waited
for the loader domain to complete an operation on the program on behalf
of another task. This figure is the number of tasks that waited in
the past, and does not include tasks that are currently waiting (LDGWLR).
Program load requests might wait for the following reasons:
Reset characteristic: reset to zero
|
| Peak waiting Loader requests | LDGWLRHW | The maximum number of tasks suspended at one time.
Reset characteristic: reset to current value (LDGWLR)
|
| Times at peak | LDGHWMT | The number of times the high-water mark indicated
by LDGWLRHW was reached. This, along with the fields LDGWTDLR and
LDGWLRHW, is an indication of the level of contention for loader resource.
Reset characteristic: reset to 1
|
| Total waiting time | LDGTTW | The suspended time for the number of tasks indicated
by LDGWTDLR. The DFHSTUP report expresses this time as hours:minutes:seconds.decimals;
however, the DSECT field contains a 4-byte field which expresses the
time in 16-microsecond units. Reset characteristic: reset to zero
|
| Times DFHRPL re-opened | LDGDREBS | The number of times the loader received an end-of-extent
condition during a load operation, and successfully closed and re-opened
the DFHRPL or dynamic LIBRARY concatenation and retried the
load operation. Reset characteristic: reset to zero
|
| DFHSTUP name | Field name | Description |
|---|---|---|
| Programs removed by compression | LDGDPSCR | The number of program instances removed from storage
by the Dynamic Program Storage Compression (DPSC) mechanism. Reset characteristic: reset to zero
|
| Total Not In Use queue membership time | LDGDPSCT | The program Not-In-Use (NIU) queue membership
time. For each program that becomes eligible for removal from storage
by the DPSC mechanism, the time between the program becoming eligible
and the actual time of its being removed from storage is calculated.
This field is the sum of these times for all programs removed by the
DPSC mechanism and as such can be greater than the elapsed CICS run
time. This field does not include the wait time for those programs
reclaimed from the Not-In-Use queue. The DFHSTUP report expresses this time as hours:minutes:seconds.decimals; however, the DSECT field contains the time as a store clock (STCK) value. Reset characteristic: reset to zero
|
| Average Not In Use queue membership time | The average length of time that a program is eligible
for removal from storage by the DPSC mechanism. This value is calculated
by DFHSTUP. The DFHSTUP report expresses this time as hours:minutes:seconds.decimals. Reset characteristic: none
|
|
| Reclaims from Not In Use queue | LDGRECNIU | The number of reclaims that CICS has
made from the Not-In-Use (NIU) queue. Reclaims occur when a request
is issued for programs currently in the Not-In-Use queue. The reclaimed
instance of a program is no longer eligible for program compression
(DPSC). Reset characteristic: reset to zero
|
| Programs loaded but Not In Use | LDGPROGNIU | The number of programs on the Not-In-Use (NIU)
queue. Reset characteristic: not reset
|
| Amount of DSA occupied by Not In Use programs | LDGSTGNIU | The current amount of CDSA storage which is occupied
by Not-In-Use (NIU) programs. Reset characteristic: not reset
|
| DFHSTUP name | Field name | Description |
|---|---|---|
| Programs removed by compression | LDGDPSCR | The number of program instances removed from storage
by the Dynamic Program Storage Compression (DPSC) mechanism. Reset characteristic: reset to zero
|
| Total Not In Use queue membership time | LDGDPSCT | The program Not-In-Use (NIU) queue membership
time. For each program that becomes eligible for removal from storage
by the DPSC mechanism, the time between the program becoming eligible
and the actual time of its being removed from storage is calculated.
This field is the sum of these times for all programs removed by the
DPSC mechanism and as such can be greater than the elapsed CICS run
time. This field does not include the wait time for those programs
reclaimed from the Not-In-Use queue. The DFHSTUP report expresses this time as hours:minutes:seconds.decimals; however, the DSECT field contains the time as a store clock (STCK) value. Reset characteristic: reset to zero
|
| Average Not In Use queue membership time | The average length of time that a program is eligible
for removal from storage by the DPSC mechanism. This value is calculated
by DFHSTUP. The DFHSTUP report expresses this time as hours:minutes:seconds.decimals. Reset characteristic: none
|
|
| Reclaims from Not In Use queue | LDGRECNIU | The number of reclaims that CICS has
made from the Not-In-Use (NIU) queue. Reclaims occur when a request
is issued for programs currently in the Not-In-Use queue. The reclaimed
instance of a program is no longer eligible for program compression
(DPSC). Reset characteristic: reset to zero
|
| Programs loaded but Not In Use | LDGPROGNIU | The number of programs on the Not-In-Use (NIU)
queue. Reset characteristic: not reset
|
| Amount of DSA occupied by Not In Use programs | LDGSTGNIU | The current amount of ECDSA storage which is occupied
by Not-In-Use (NIU) programs. Reset characteristic: not reset
|
| DFHSTUP name | Field name | Description |
|---|---|---|
| Programs removed by compression | LDGDPSCR | The number of program instances removed from storage
by the Dynamic Program Storage Compression (DPSC) mechanism. Reset characteristic: reset to zero
|
| Total Not In Use queue membership time | LDGDPSCT | The program Not-In-Use (NIU) queue membership
time. For each program that becomes eligible for removal from storage
by the DPSC mechanism, the time between the program becoming eligible
and the actual time of its being removed from storage is calculated.
This field is the sum of these times for all programs removed by the
DPSC mechanism and as such can be greater than the elapsed CICS run
time. This field does not include the wait time for those programs
reclaimed from the Not-In-Use queue. The DFHSTUP report expresses this time as hours:minutes:seconds.decimals; however, the DSECT field contains the time as a store clock (STCK) value. Reset characteristic: reset to zero
|
| Average Not In Use queue membership time | The average length of time that a program is eligible
for removal from storage by the DPSC mechanism. This value is calculated
by DFHSTUP. The DFHSTUP report expresses this time as hours:minutes:seconds.decimals. Reset characteristic: none
|
|
| Reclaims from Not In Use queue | LDGRECNIU | The number of reclaims that CICS has
made from the Not-In-Use (NIU) queue. Reclaims occur when a request
is issued for programs currently in the Not-In-Use queue. The reclaimed
instance of a program is no longer eligible for program compression
(DPSC). Reset characteristic: reset to zero
|
| Programs loaded but Not In Use | LDGPROGNIU | The number of programs on the Not-In-Use (NIU)
queue. Reset characteristic: not reset
|
| Amount of DSA occupied by Not In Use programs | LDGSTGNIU | The current amount of SDSA storage which is occupied
by Not-In-Use (NIU) programs. Reset characteristic: not reset
|
| DFHSTUP name | Field name | Description |
|---|---|---|
| Programs removed by compression | LDGDPSCR | The number of program instances removed from storage
by the Dynamic Program Storage Compression (DPSC) mechanism. Reset characteristic: reset to zero
|
| Total Not In Use queue membership time | LDGDPSCT | The program Not-In-Use (NIU) queue membership
time. For each program that becomes eligible for removal from storage
by the DPSC mechanism, the time between the program becoming eligible
and the actual time of its being removed from storage is calculated.
This field is the sum of these times for all programs removed by the
DPSC mechanism and as such can be greater than the elapsed CICS run
time. This field does not include the wait time for those programs
reclaimed from the Not-In-Use queue. The DFHSTUP report expresses this time as hours:minutes:seconds.decimals; however, the DSECT field contains the time as a store clock (STCK) value. Reset characteristic: reset to zero
|
| Average Not In Use queue membership time | The average length of time that a program is eligible
for removal from storage by the DPSC mechanism. This value is calculated
by DFHSTUP. The DFHSTUP report expresses this time as hours:minutes:seconds.decimals. Reset characteristic: none
|
|
| Reclaims from Not In Use queue | LDGRECNIU | The number of reclaims that CICS has
made from the Not-In-Use (NIU) queue. Reclaims occur when a request
is issued for programs currently in the Not-In-Use queue. The reclaimed
instance of a program is no longer eligible for program compression
(DPSC). Reset characteristic: reset to zero
|
| Programs loaded but Not In Use | LDGPROGNIU | The number of programs on the Not-In-Use (NIU)
queue. Reset characteristic: not reset
|
| Amount of DSA occupied by Not In Use programs | LDGSTGNIU | The current amount of ESDSA storage which is occupied
by Not-In-Use (NIU) programs. Reset characteristic: not reset
|
| DFHSTUP name | Field name | Description |
|---|---|---|
| Programs removed by compression | LDGDPSCR | The number of program instances removed from storage
by the Dynamic Program Storage Compression (DPSC) mechanism. Reset characteristic: reset to zero
|
| Total Not In Use queue membership time | LDGDPSCT | The program Not-In-Use (NIU) queue membership
time. For each program that becomes eligible for removal from storage
by the DPSC mechanism, the time between the program becoming eligible
and the actual time of its being removed from storage is calculated.
This field is the sum of these times for all programs removed by the
DPSC mechanism and as such can be greater than the elapsed CICS run
time. This field does not include the wait time for those programs
reclaimed from the Not-In-Use queue. The DFHSTUP report expresses this time as hours:minutes:seconds.decimals; however, the DSECT field contains the time as a store clock (STCK) value. Reset characteristic: reset to zero
|
| Average Not In Use queue membership time | The average length of time that a program is eligible
for removal from storage by the DPSC mechanism. This value is calculated
by DFHSTUP. The DFHSTUP report expresses this time as hours:minutes:seconds.decimals. Reset characteristic: none
|
|
| Reclaims from Not In Use queue | LDGRECNIU | The number of reclaims that CICS has
made from the Not-In-Use (NIU) queue. Reclaims occur when a request
is issued for programs currently in the Not-In-Use queue. The reclaimed
instance of a program is no longer eligible for program compression
(DPSC). Reset characteristic: reset to zero
|
| Programs loaded but Not In Use | LDGPROGNIU | The number of programs on the Not-In-Use (NIU)
queue. Reset characteristic: not reset
|
| DFHSTUP name | Field name | Description |
|---|---|---|
| Programs removed by compression | LDGDPSCR | The number of program instances removed from storage
by the Dynamic Program Storage Compression (DPSC) mechanism. Reset characteristic: reset to zero
|
| Total Not In Use queue membership time | LDGDPSCT | The program Not-In-Use (NIU) queue membership
time. For each program that becomes eligible for removal from storage
by the DPSC mechanism, the time between the program becoming eligible
and the actual time of its being removed from storage is calculated.
This field is the sum of these times for all programs removed by the
DPSC mechanism and as such can be greater than the elapsed CICS run
time. This field does not include the wait time for those programs
reclaimed from the Not-In-Use queue. The DFHSTUP report expresses this time as hours:minutes:seconds.decimals; however, the DSECT field contains the time as a store clock (STCK) value. Reset characteristic: reset to zero
|
| Average Not In Use queue membership time | The average length of time that a program is eligible
for removal from storage by the DPSC mechanism. This value is calculated
by DFHSTUP. The DFHSTUP report expresses this time as hours:minutes:seconds.decimals. Reset characteristic: none
|
|
| Reclaims from Not In Use queue | LDGRECNIU | The number of reclaims that CICS has
made from the Not-In-Use (NIU) queue. Reclaims occur when a request
is issued for programs currently in the Not-In-Use queue. The reclaimed
instance of a program is no longer eligible for program compression
(DPSC). Reset characteristic: reset to zero
|
| Programs loaded but Not In Use | LDGPROGNIU | The number of programs on the Not-In-Use (NIU)
queue. Reset characteristic: not reset
|
| Amount of DSA occupied by Not In Use programs | LDGSTGNIU | The current amount of ERDSA storage which is occupied
by Not-In-Use (NIU) programs. Reset characteristic: not reset
|
