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<h1 class="topictitle1">Performance data files: QAPMLIOP</h1>
<div><p>This database file includes twinaxial IOP data file entries and
lists the fields in the twinaxial IOP data file.</p>
<div class="section"><p> </p>
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<!-- End of link to dynamic table --><table cellpadding="4" cellspacing="0" summary="" frame="border" border="1" rules="all"><thead align="left"><tr><th valign="top" width="25%" id="d0e25">Field Name</th>
<th valign="top" width="50%" id="d0e27">Description</th>
<th valign="top" width="25%" id="d0e29">Attribute</th>
</tr>
</thead>
<tbody><tr><td valign="top" width="25%" headers="d0e25 ">INTNUM</td>
<td valign="top" width="50%" headers="d0e27 ">Interval number: The nth sample database interval based on the start
time specified in the <span class="cmdname">Create Performance Data (CRTPFRDTA)</span> command.</td>
<td valign="top" width="25%" headers="d0e29 ">PD (5,0)</td>
</tr>
<tr><td valign="top" width="25%" headers="d0e25 ">DTETIM</td>
<td valign="top" width="50%" headers="d0e27 ">Interval date (yymmdd) and time (hhmmss): The date and time of the
sample interval.</td>
<td valign="top" width="25%" headers="d0e29 ">C (12)</td>
</tr>
<tr><td valign="top" width="25%" headers="d0e25 ">INTSEC</td>
<td valign="top" width="50%" headers="d0e27 ">Elapsed interval seconds: The number of seconds since the last sample
interval.</td>
<td valign="top" width="25%" headers="d0e29 ">PD (7,0)</td>
</tr>
<tr><td valign="top" width="25%" headers="d0e25 ">IOPRN</td>
<td valign="top" width="50%" headers="d0e27 ">IOP resource name.</td>
<td valign="top" width="25%" headers="d0e29 ">C(10)</td>
</tr>
<tr><td valign="top" width="25%" headers="d0e25 ">LIIOP</td>
<td valign="top" width="50%" headers="d0e27 ">Reserved</td>
<td valign="top" width="25%" headers="d0e29 ">C (1)</td>
</tr>
<tr><td valign="top" width="25%" headers="d0e25 ">LITYPE</td>
<td valign="top" width="50%" headers="d0e27 ">IOP type.</td>
<td valign="top" width="25%" headers="d0e29 ">C (4)</td>
</tr>
<tr><td valign="top" width="25%" headers="d0e25 ">LIRIDC</td>
<td valign="top" width="50%" headers="d0e27 ">Resource ID of controller: Field cannot be displayed.</td>
<td valign="top" width="25%" headers="d0e29 ">C (8)</td>
</tr>
<tr><td valign="top" width="25%" headers="d0e25 ">LITPKT</td>
<td valign="top" width="50%" headers="d0e27 ">Total packets transferred.</td>
<td valign="top" width="25%" headers="d0e29 ">PD (11,0)</td>
</tr>
<tr><td valign="top" width="25%" headers="d0e25 ">LIKBYO</td>
<td valign="top" width="50%" headers="d0e27 ">Total KB transmitted from the IOP to the system across the bus.</td>
<td valign="top" width="25%" headers="d0e29 ">PD (11,0)</td>
</tr>
<tr><td valign="top" width="25%" headers="d0e25 ">LIKBYI</td>
<td valign="top" width="50%" headers="d0e27 ">Total KB transmitted to the IOP from the system across the bus.</td>
<td valign="top" width="25%" headers="d0e29 ">PD (11,0)</td>
</tr>
<tr><td valign="top" width="25%" headers="d0e25 ">LIOPSR</td>
<td valign="top" width="50%" headers="d0e27 ">OPSTART bus unit message received from another bus unit using normal
flow.</td>
<td valign="top" width="25%" headers="d0e29 ">PD (11,0)</td>
</tr>
<tr><td valign="top" width="25%" headers="d0e25 ">LIOPSS</td>
<td valign="top" width="50%" headers="d0e27 ">OPSTART bus unit message received from another bus unit using reverse
flow method 2.</td>
<td valign="top" width="25%" headers="d0e29 ">PD (11,0)</td>
</tr>
<tr><td valign="top" width="25%" headers="d0e25 ">LISGLR</td>
<td valign="top" width="50%" headers="d0e27 ">Signal bus unit message received from another bus unit.</td>
<td valign="top" width="25%" headers="d0e29 ">PD (11,0)</td>
</tr>
<tr><td valign="top" width="25%" headers="d0e25 ">LIOPST</td>
<td valign="top" width="50%" headers="d0e27 ">OPSTARTS sent to another bus unit using reverse flow method 2.</td>
<td valign="top" width="25%" headers="d0e29 ">PD (11,0)</td>
</tr>
<tr><td valign="top" width="25%" headers="d0e25 ">LISGLS</td>
<td valign="top" width="50%" headers="d0e27 ">Signals sent to another bus unit.</td>
<td valign="top" width="25%" headers="d0e29 ">PD (11,0)</td>
</tr>
<tr><td valign="top" width="25%" headers="d0e25 ">LIRSTQ</td>
<td valign="top" width="50%" headers="d0e27 ">Restart queues bus unit message sent to another bus unit.</td>
<td valign="top" width="25%" headers="d0e29 ">PD (11,0)</td>
</tr>
<tr><td valign="top" width="25%" headers="d0e25 ">LIRQDO</td>
<td valign="top" width="50%" headers="d0e27 ">DMA requests sent for output of data: The number of requests the IOP
sends to the system for data to be sent from the IOP to the system across
the bus.</td>
<td valign="top" width="25%" headers="d0e29 ">PD (11,0)</td>
</tr>
<tr><td valign="top" width="25%" headers="d0e25 ">LIRQDI</td>
<td valign="top" width="50%" headers="d0e27 ">DMA requests sent for input of data: The number of requests the IOP
sends to the system for data to be sent to the IOP from the system across
the bus.</td>
<td valign="top" width="25%" headers="d0e29 ">PD (11,0)</td>
</tr>
<tr><td valign="top" width="25%" headers="d0e25 ">LIBNAR</td>
<td valign="top" width="50%" headers="d0e27 ">Occurrences of BNA received.</td>
<td valign="top" width="25%" headers="d0e29 ">PD (11,0)</td>
</tr>
<tr><td valign="top" width="25%" headers="d0e25 ">LIIOQC</td>
<td valign="top" width="50%" headers="d0e27 ">Wait-on-I/O queue count: The number of I/O requests on the wait-on-I/O
queue at sample time. The wait-on-I/O queue holds I/O requests that are being
processed or waiting to be processed.</td>
<td valign="top" width="25%" headers="d0e29 ">PD (11,0)</td>
</tr>
<tr><td valign="top" width="25%" headers="d0e25 ">LISQC</td>
<td valign="top" width="50%" headers="d0e27 ">Suspend queue count: The number of elements on the suspend queue at
sample time.</td>
<td valign="top" width="25%" headers="d0e29 ">PD (11,0)</td>
</tr>
<tr><td valign="top" width="25%" headers="d0e25 ">LIAQC</td>
<td valign="top" width="50%" headers="d0e27 ">Active queue count: The number of elements on the active queue at sample
time. The active queue holds I/O requests that were sent from the host system
and were not yet sent to the wait-on-I/O queue.</td>
<td valign="top" width="25%" headers="d0e29 ">PD (11,0)</td>
</tr>
<tr><td valign="top" width="25%" headers="d0e25 ">LITWIU</td>
<td valign="top" width="50%" headers="d0e27 ">Twinaxial use count: The number of times when the wait-on-I/O queue
was sampled and the count was not zero (I/O in progress). If this value is
divided by the sample count, the result (times 100) is the percentage of time
when I/O is occurring.</td>
<td valign="top" width="25%" headers="d0e29 ">PD (5,0)</td>
</tr>
<tr><td valign="top" width="25%" headers="d0e25 ">LISMPL</td>
<td valign="top" width="50%" headers="d0e27 ">Sample count: The number of times during the snapshot interval that
the various IOP queues were sampled.</td>
<td valign="top" width="25%" headers="d0e29 ">PD (5,0)</td>
</tr>
<tr><td valign="top" width="25%" headers="d0e25 ">LIIDLC</td>
<td valign="top" width="50%" headers="d0e27 ">Idle counts <a href="#rzahxqapmliop__qapmliopnote">(see notes)</a>:
The number of times the workstation IOP ran an idle loop. This is done when
the IOP has no work to perform. This count is used with the idle loop time.</td>
<td valign="top" width="25%" headers="d0e29 ">PD (11,0)</td>
</tr>
<tr><td valign="top" width="25%" headers="d0e25 ">LIIDLT</td>
<td valign="top" width="50%" headers="d0e27 ">Idle loop time (times 0.01 microsecond) <a href="#rzahxqapmliop__qapmliopnote">(see
notes)</a>: The time (in hundredths of microseconds) to run the idle loop
once.</td>
<td valign="top" width="25%" headers="d0e29 ">PD (11,0)</td>
</tr>
</tbody>
</table>
</div>
<div class="note" id="rzahxqapmliop__qapmliopnote"><a name="rzahxqapmliop__qapmliopnote"><!-- --></a><span class="notetitle">Notes:</span> The idle loop
count and time are used to calculate the communications IOP utilization as
follows:<ol><li>Convert the product of the idle loop count times the idle loop time from
hundredths of microseconds to seconds. Subtract this from the interval time,
and divide the results by the interval time. For example: <blockquote>IOP utilization
= (INTSEC - (CIIDLC * CIIDLT)/10**8) / INTSEC</blockquote>
</li>
<li>The performance monitor reports I/O processor (IOP) statistics different
beginning with Version 3 Release 7. Therefore, performance statistics for
IOPs introduced in Version 3 Release 7 or later releases are reported in the
QAPMMIOP file. Performance statistics are reported in the QAPMMIOP file even
if the IOP supports only one of the three IOP functions (communications, disk,
or local workstation). Performance statistics for IOPs that were introduced
before Version 3 Release 7 will continue to be reported in the appropriate
IOP file (QAPMCIOP, QAPMDIOP, QAPMLIOP, and QAPMMIOP).</li>
</ol>
</div>
</div>
</div>
<div>
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzahxapsparent.htm" title="Managing performance on iSeries systems requires the use of a variety of specialized applications. Each of these applications offers a specific insight into system performance. This topic explains several applications and the intended use of each application.">Applications for performance management</a></div>
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