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The second portion of the summary level reports consists of
the Summary Exception Report, which is shown in Figure 2-134.
This report is produced only if two conditions are met:
o The user defines an exception limit.
o One or more time periods reported exceed this limit.
An exception limit of 0 causes all observations to print.
This report contains one or more subreports, one for each
time interval during which the exception limit was exceeded.
Each subreport is preceded by its own subheading containing
the following identifiers:
DATE
ANALYZED: The date of this exception period.
TIME
ANALYZED: The time of this exception period.
STANDARD ITEMS
The report contains the following standard items:
JOB ID: The name of the job being analyzed. Any
hypothetical jobs added during the analysis will
have their JOB ID begin with an asterisk (*).
READER The date and time that the job was read into the
TIME STAMP: system.
STEP NBR: The number of the job step being analyzed.
PROGRAM The name of the program being executed by this
NAME: job step.
START
TIME STAMP: The time that the job step began executing.
END
TIME STAMP: The time that the job step ended its execution.
SYS ID: The SYSID of the system in which the job step
executed.
STEP ALLOC. The amount of time the step waited for device
TIME: allocation by MVS to complete. This time
represents periods when the step was eligible
for execution, but required I/O devices (that
is, DASD, tape, etc.) were not yet allocated
for its use. This condition can affect the Tape
Drive Simulation Analysis inquiry adversely.
The Tape Drive Simulation Analysis inquiry
assumes a device to be allocated from step start
(data element STARTTS) to step end (data element
ENDTS).
ADDED OR The indication of whether the job step
MOVED: represents actual work currently running at the
time being reported (CURRENT), a workload
hypothetically added (ADDED), or actual work
that has been hypothetically moved to a
different time interval (MOVED).
TAPE The number of tape drives allocated by this job
DEVICES step. This always represents the number of tape
ALLOC.: drives actually needed by the operating system
for this job step as represented by the
data element PGMMXNTA.
The standard items displayed are controlled by a panel
containing lists of data element names. Any data element
from the CA MICS BATPGM type file is eligible for display. In
addition, the data elements JOBINQTM and JOBFETTM from the
BATJOB File are available. Also, any user-computed data
elements are eligible for display.
OPTIONAL ELEMENTS
In addition to the standard items, the following optional
items are printed, depending on the inquiry fields specified.
If you choose JES Version 3 (main device scheduling) the
number of tape drives reserved by the allocation method is
calculated and reported.
HIGH WATER The number of tape drives that would be
ALLOC.: required by this job step if the high water mark
option of JES3 Main Device Scheduling was
enabled. This value is computed in the Tape
Drive Simulation Analysis inquiry in the data
element HIGHWATR.
If the Analysis Method field specifies PRORATE and you choose
JES Version 2, then the number of tape drives used within an
interval is calculated and displayed.
TAPE DRIVES The number of tape drives used by this job step
PRORATED in the interval. This number is the percentage
(MVS): of tape drives prorated to the interval. For
example, let us assume an interval of 60 minutes
and a step that executed for 45 minutes within
the interval. If the step had a PGMMXNTA value
of 4, the resulting number of tape drives
prorated to the interval/step combination would
be 3 (4*(45/60)). The element is computed in
the Tape Drive Simulation Analysis inquiry in
the data element PROTAPE.
If the Analysis Method field specifies PRORATE and you choose
JES Version 3, then, in addition to the above data elements,
the number of drives prorated to the interval for the step is
computed, substituting the number of drives reserved under
JES3 highwater marks allocation for the number allocated
under MVS. A description follows:
TAPE DRIVES The number of tape drives allocated or reserved
PRORATED by the step within the interval. This number is
(MDS): a percentage computed by the Tape Drive
Simulation Analysis inquiry in the data element
PROHIGH. It uses the methodology documented
above, under TAPE DRIVES PRORATED (MVS),
substituting the number of drives reserved or
allocated as documented under the item HIGH
WATER ALLOC for the number of drives allocated
(PGMMXNTA).
Use of the USER Modeling exit causes additional data elements
to be displayed. This exit provides a method of adjusting
step execution times based on user-supplied values. The use
of this facility causes the following items to be displayed:
ORIGINAL The unmodified end timestamp. If any
END adjustment to execution time is made in a
TIMESTAMP: standard fashion, this element (ORGENDTS) is
displayed.
If mount time adjustment is made, then, in addition to the
unmodified end timestamp, the following items are displayed:
REEL DEVICES The number of REEL tape devices allocated. This
ALLOCATED: element is computed as the total number of tape
devices (PGMMXNTA) minus the number of CTRG
devices (PGMN3480).
CTRG DEVICES The number of cartridge devices allocated
ALLOCATED: (PGMN3480).
JOB
ADJUSTMENT The running total of step adjustment time that
TIME: has taken place in prior steps of the job.
SPECIFIED The specified mount time value in seconds.
AVERAGE This item is supplied to the Tape Drive
MOUNT TIME: Simulation Analysis inquiry by the USER Modeling
exit and causes the step's end timestamp to be
adjusted.
TAPE The sum of specific and non-specific tape mounts
MOUNTS: as found in the BATPGM File data elements
PGMSTMT and PGMNSTMT. These data elements are
available at the MVS/SE2 levels and above.
COMPUTED Tape mounts multiplied by the specified average
MOUNT TIME: mount time. This value is added to the end
timestamp. If the specified average mount time
was negative, the computed mount time is
negative as well.
If any tape connect time adjustment is made using the
documented features provided in the USER Modeling exit, then
the original connect time is displayed in addition to the
other elements.
ORIGINAL The time the step tape drives were connected for
TAPE CONNECT the purpose of data transfer (PGMCTAPE). This
TIME: element is only available in MVS/XA operating
systems.
Connect time adjustment is done by a percent increase or
decrease, or by specification of an average I/O time. The
percent method can only be used if connect time is available
(MVS/XA element). Connect time and EXCPs are computed for
REEL devices as the total (PGMCTAPE and PGMETAPE) minus the
observed values of the CTRG counters (PGMC3480 and PGME3480).
Adjustment of connect time by device type can then proceed.
The following items are thus method (percent vs. average I/O
time) and device (REEL vs. CTRG) dependent.
ORIGINAL These elements contain the unmodified connect
CONNECT TIME time for each type of tape device. When the
REEL DEVICES/ average I/O time method is used, the elements
ORIGINAL are computed. When the percent method is
CONNECT TIME used, the REEL time is computed as the total
CTRG DEVICES: tape device connect time minus the CTRG
connect time.
SPECIFIED REEL These items represent the percentage
CONNECT % adjustment factor supplied to the tape
ADJUSTMENT/ Drive Simulation Analysis inquiry via the
SPECIFIED CTRG USER Modeling exit for each device type.
CONNECT % Adjustment factors are specified by the
ADJUSTMENT: device type (REEL or CTRG) independently.
This decimal factor is then multiplied by
connect time to derive the adjustment amount.
SPECIFIED These items represent the average I/O time to
AVERAGE REEL complete one EXCP as supplied to the Tape
I/O TIME/ Drive Analysis Simulation inquiry via the
SPECIFIED USER Modeling exit. These factors are
AVERAGE CTRG specified by device type (REEL or CTRG). The
I/O TIME: EXCPs for the device type are multiplied by
the factor to derive an adjustment amount.
REEL EXCPs/ These elements are displayed when the average
CTRG EXCPs: I/O time method is used. EXCPs for
REEL devices are computed as the total tape
EXCPs (PGMETAPE) minus the CTRG EXCPs
(PGME3480). When the average I/O time method
is used, EXCPs by device type are multiplied
by the supplied times.
ADJUSTED
CONNECT TIME-
REEL DEVICES/ These elements are displayed when connect time
ADJUSTED adjustment has occurred for the device times,
CONNECT TIME- and contain the amount of time to adjust the
CTRG DEVICES: end timestamp of a step.
CA MICS Performance Manager TAPE DRIVE ANALYSIS SUMMARY EXCEPTION REPORT TAPE WORKLOADS RUNNING DURING TAPE-CONSTRAINED PERIODS STEP ALLOCATION MODEL - SNAPSHOT METHOD USED - WORK ADDED -------------------------------------------DATE ANALYZED=07SEPyy TIME ANALYZED=8:00:00------------------------------------------- JOB READER STEP PROGRAM START END SYS STEP ADDED TAPE ID TIME NBR NAME TIME TIME ID ALLOC. OR DEVICES STAMP STAMP STAMP TIME MOVED ALLOC. *W 0 0 07SEPyy:06:04:00.00 07SEPyy:08:12:00.00 0 ADDED 3.00 PSG049AA 07SEPyy:07:57:50.07 4 IEBGENER 07SEPyy:07:58:27.72 07SEPyy:08:02:46.50 XA01 0:00:00.94 CURRENT 1.00 SYS053BA 07SEPyy:07:39:34.84 1 SASLPA 07SEPyy:07:39:49.36 07SEPyy:08:12:11.18 XA01 0:00:13.62 CURRENT 1.00 -------- ------- TESTTM 5.00 -------------------------------------------DATE ANALYZED=07SEPyy TIME ANALYZED=8:02:00------------------------------------------- JOB READER STEP PROGRAM START END SYS STEP ADDED TAPE ID TIME NBR NAME TIME TIME ID ALLOC. OR DEVICES STAMP STAMP STAMP TIME MOVED ALLOC. *W 0 0 07SEPyy:06:04:00.00 07SEPyy:08:12:00.00 0 ADDED 3.00 MCC001DD 07SEPyy:08:00:56.92 4 SASLPA 07SEPyy:08:01:38.03 07SEPyy:08:19:37.46 XA01 0:00:05.10 CURRENT 1.00 PSG049AA 07SEPyy:07:57:50.07 4 IEBGENER 07SEPyy:07:58:27.72 07SEPyy:08:02:46.50 XA01 0:00:00.94 CURRENT 1.00 SYS053BA 07SEPyy:07:39:34.84 1 SASLPA 07SEPyy:07:39:49.36 07SEPyy:08:12:11.18 XA01 0:00:13.62 CURRENT 1.00 -------- ------- TESTTM 6.00 -------------------------------------------DATE ANALYZED=07SEPyy TIME ANALYZED=8:04:00------------------------------------------- JOB READER STEP PROGRAM START END SYS STEP ADDED TAPE ID TIME NBR NAME TIME TIME ID ALLOC. OR DEVICES STAMP STAMP STAMP TIME MOVED ALLOC. *W 0 0 07SEPyy:06:04:00.00 07SEPyy:08:12:00.00 0 ADDED 3.00 MCC001DD 07SEPyy:08:00:56.92 4 SASLPA 07SEPyy:08:01:38.03 07SEPyy:08:19:37.46 XA01 0:00:05.10 CURRENT 1.00 PSG00690 07SEPyy:08:01:43.57 4 TMSGRW 07SEPyy:08:02:04.68 07SEPyy:08:04:46.23 XA01 0:00:02.43 CURRENT 1.00 SYS053BA 07SEPyy:07:39:34.84 1 SASLPA 07SEPyy:07:39:49.36 07SEPyy:08:12:11.18 XA01 0:00:13.62 CURRENT 1.00 -------- ------- TESTTM 6.00
Figure 2-134. Tape Drive Simulation Analysis - Summary Exception Report
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