ibm-information-center/dist/eclipse/plugins/i5OS.ic.rzaks_5.4.0.1/rzaksperformanceinfoqhist.htm

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<h1 class="topictitle1">Performance information and QHST</h1>
<div><p>Performance information is not displayed as text on message CPF1164.
Because the message is in the QHST log, users can write application programs
to retrieve this data. </p>
<p>The performance information is passed as a variable length replacement
text value. This means that the data is in a structure within the first entry
being the length of the data. The size of the length field is not included
in the length.</p>
<p><strong>Time and Date:</strong> The first data fields in the structure are the times
and dates that the job entered the system and when the first routing step
for the job was started. The times are in the format 'hh:mm:ss'. The time
separators in this example are colons. This separator is determined by the
value specified in the Date and time (QTIMSEP) system value. The dates are
in the format defined in the Date and time (QDATFMT) system value and the
separators are in the Date and time (QDATSEP) system value. The time and date
the job entered the system precede the job start time and date in the structure.
The time and date the job entered the system are when the system becomes aware
of a job to be initiated (a job structure is set aside for the job). For an
interactive job, the job entry time is the time the password is recognized
by the system. For a batch job, it is the time the Batch Job (<span class="cmdname">BCHJOB</span>)
or Submit Job (<span class="cmdname">SBMJOB</span>) command is processed. For a monitor
job, reader or writer, it is the time the corresponding start command is processed,
and for autostart jobs it is during the start of the subsystem.</p>
<p><strong>Total Response Time and Number of Transactions:</strong> Following the times
and dates are the total response time and the number of transactions. The
total response time is in seconds and contains the accumulated value of all
the intervals the job was processing between pressing the Enter key at the
workstation and when the next display is shown. This information is similar
to that shown on the Work with Active Job (<span class="cmdname">WRKACTJOB</span>) display.
This field is only meaningful for interactive jobs.</p>
<p>It is also possible in the case of a system failure or abnormal job end
that the last transaction will not be included in the total. The job end code
in this case would be a 40 or greater. The transaction count is also only
meaningful for interactive jobs other than the console job and is the number
of response time intervals counted by the system during the job.</p>
<div class="p"><strong>Number of Synchronous Auxiliary I/O Operations: </strong>The number of synchronous
auxiliary I/O operations follows the number of transactions. For a job with
multiple threads, this value includes only synchronous auxiliary I/O operations
from the initial thread. This is the same as the AUXIO field that appears
on the <span class="cmdname">WRKACTJOB</span> display except for the following difference:<ul><li>The <span class="cmdname">WRKACTJOB</span> display shows the value for the initial
thread of the current routing step.</li>
<li>The QHST message contains the cumulative total for the initial thread
of each routing step in the job.</li>
</ul>
</div>
<p>If the job ends with an end code of 70, this value may not contain the
count for the final routing step. Additionally, if a job exists across an
IPL (using a Transfer Batch Job (<span class="cmdname">TFRBCHJOB</span>)
command) it is ended before becoming active following an IPL, the value is
0.</p>
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<div class="familylinks">
<div class="parentlink"><strong>Parent topic:</strong> <a href="rzaksqhistlog.htm" title="The history (QHST) log consists of a message queue and a physical file known as a log-version. Messages sent to the log message queue are written by the system to the current log-version physical file.">QHST History Log</a></div>
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