ibm-information-center/dist/eclipse/plugins/i5OS.ic.rzait_5.4.0.1/rzaitinterperform.htm

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<h1 class="topictitle1">Select interactive performance</h1>
<div><p>Every physical system is purchased with a specific quantity of
interactive performance which is allocated to the partition as a percentage
of the total system interactive performance. </p>
<p>Interactive performance enables you to run jobs that require user interaction
in contrast to batch jobs which require no user interaction. Each partition
has a unique requirement for the amount of interactive performance.</p>
<p>To move interactive performance, you have to establish a minimum and maximum
range within which you can move the resource without needing to restart the
logical partition. If you change either the minimum or maximum value you will
have to restart the partition.</p>
<p>You can specify an interactive performance minimum value equal to the minimum
amount of interactive performance needed to support the logical partition.
The maximum value must be less than the amount of interactive performance
available on the system. The maximum interactive performance is limited by
the number of processors in a partition.</p>
<div class="section"><h4 class="sectiontitle">Relationship between 5250 interactive capacity, logical partitioning,
and Capacity on Demand</h4><p>You allocate 5250 interactive capacity across
logical partitions by specifying a percentage of the overall available capacity.
The method you use to allocate 5250 interactive capacity to a logical partition
works the same on all iSeries™, models, whether the models have standby
processors or not:</p>
<ul><li>For servers with interactive features, you can allocate a percentage of
the interactive feature capacity to be made available for 5250 interactive
processing.</li>
<li>For Enterprise Edition servers, you can allocate a percentage of the active
processor capacity to be made available for 5250 interactive processing .</li>
<li>For Standard Edition servers, there is no 5250 interactive processing
capacity to allocate. However, up to 100% of the active processor capacity
is available to any partition with a single job doing 5250 interactive processing.</li>
</ul>
<p>The rules for assigning interactive capacity are as follows.</p>
</div>
<div class="section"><h4 class="sectiontitle">The server restricts you from assigning more 5250 interactive
capacity to a partition than the assigned processor capacity in the same partition.</h4><p>This
restriction prevents you from wasting 5250 interactive capacity. For example,
for a server with six installed and activated processors, each processor has
approximately 16.7% of the total server capacity. For a single-processor partition
on this server with an Enterprise Edition, the maximum 5250 interactive allocation
can be 17% of the total 5250 interactive capacity, which allows you to allocate
slightly more 5250 interactive capacity than the partition's processor capacity.
However, you cannot allocate 17% on all of the six one-processor partitions
because the total exceeds 100%.</p>
</div>
<div class="section"><h4 class="sectiontitle">The percentage of interactive capacity you assign is based
on the total number of installed processors, whether they are activated or
not.</h4><p>However, you can only use the interactive capacity for activated
processors. For example, for a server with six installed processors and three
activated processors with three one-processor partition, you cannot allocate
more than 50% of interactive capacity across all three processors. This is
because you only have access to interactive capacity for the three activated
processors. Therefore if you create three one-processor partitions, you can
allocate 16.7% interactive capacity for each partition. But if you attempt
to allocate 16.7% interactive capacity for two partitions and 30% interactive
for the third partition, the third partition will fail.</p>
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<div class="familylinks">
<div class="parentlink"><strong>Parent topic:</strong> <a href="rzaitmoveresources.htm" title="You can dynamically move processors, memory, and interactive performance.">Perform dynamic movement of resources</a></div>
</div>
<div class="relconcepts"><strong>Related concepts</strong><br />
<div><a href="rzaitmoveresources.htm" title="You can dynamically move processors, memory, and interactive performance.">Perform dynamic movement of resources</a></div>
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