94 lines
6.0 KiB
HTML
94 lines
6.0 KiB
HTML
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PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<meta name="DC.Title" content="Performance system values: Automatically adjust thread resources" />
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<meta name="abstract" content="Specifies whether or not the system should dynamically make adjustments to the affinity of threads currently running on the system. (QTHDRSCADJ)" />
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<meta name="description" content="Specifies whether or not the system should dynamically make adjustments to the affinity of threads currently running on the system. (QTHDRSCADJ)" />
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<title>Performance system values: Automatically adjust thread resources</title>
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</head>
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<body id="rzakzqthdrscadj"><a name="rzakzqthdrscadj"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">Performance system values: Automatically adjust thread resources</h1>
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<div><p>Specifies whether or not the system should dynamically make adjustments
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to the affinity of threads currently running on the system. (QTHDRSCADJ)</p>
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<p><span class="uicontrol">Automatically adjust thread resources</span>, also known
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as <span class="uicontrol">QTHDRSCADJ</span>, is a member of the performance category
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of i5/OS™ system
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values. You can use this system value to specify whether the system dynamically
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makes adjustments to the affinity of threads currently running on the system
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or not. To learn more, keep reading.</p>
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" frame="border" border="1" rules="all"><thead align="left"><tr><th colspan="2" valign="top" class="firstcol" id="d0e34">Quick reference</th>
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</tr>
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</thead>
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<tbody><tr><th valign="top" class="firstcol" id="d0e38" headers="d0e34 ">Location</th>
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<td valign="top" headers="d0e38 d0e34 ">In iSeries™ Navigator,
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select your system, <span class="menucascade"><span class="uicontrol"></span> > <span class="uicontrol">Configuration
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and Service</span> > <span class="uicontrol">System Values</span> > <span class="uicontrol">Performance</span> > <span class="uicontrol">Affinity</span></span></td>
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</tr>
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<tr><th valign="top" class="firstcol" id="d0e56" headers="d0e34 ">Special authority</th>
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<td valign="top" headers="d0e56 d0e34 ">All object (*ALLOBJ) and security administrator (*SECADM)</td>
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</tr>
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<tr><th valign="top" class="firstcol" id="d0e61" headers="d0e34 ">Default value</th>
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<td valign="top" headers="d0e61 d0e34 ">Selected - Automatically adjust</td>
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</tr>
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<tr><th valign="top" class="firstcol" id="d0e66" headers="d0e34 ">Changes take effect</th>
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<td valign="top" headers="d0e66 d0e34 ">Immediately</td>
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</tr>
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<tr><th valign="top" class="firstcol" id="d0e71" headers="d0e34 ">Lockable</th>
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<td valign="top" headers="d0e71 d0e34 ">No</td>
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</tr>
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</tbody>
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</table>
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</div>
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<div class="section"><h4 class="sectiontitle">What can I do with this system value?</h4><p>Specifies
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whether the system should dynamically make adjustments to the affinity of
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threads currently running on the system (1) or not (0). If some resources
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are being used more than others, the system may reassign some of the threads
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running on the more heavily used resources to have affinity to the less used
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resources.</p>
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<p>If you have specified to group secondary threads using the
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thread affinity (QTHDRSCAFN) system value, the threads within one process
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will all be moved as a group. If jobs have been logically grouped with the
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routing entry or prestart job entry, the entire group will be moved together.
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If this option is selected, the system will attempt to distribute work evenly
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across all the system's resources.</p>
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</div>
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<div class="section"><h4 class="sectiontitle">Where can I get more information about this system value?</h4><p>To
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learn more, go to the performance system values overview topic. If you are
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looking for a specific system value or category of system values, try using
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the i5/OS system
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value finder.</p>
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</div>
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</div>
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<div><div class="relconcepts"><strong>Related concepts</strong><br />
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<div><a href="rzakzperformanceoverview.htm" title="Use i5/OS performance system values to view and change priority, performance adjustments, and processing values for the system.">System values: Performance overview</a></div>
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<div><a href="rzakzqthdrscafn.htm" title="Specifies whether or not secondary threads will have affinity to the same group of processors and memory as the initial thread. (QTHDRSCAFN)">Performance system values: Thread affinity</a></div>
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</div>
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<div class="relinfo"><strong>Related information</strong><br />
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<div><a href="rzakzfinder.htm">System value finder</a></div>
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</div>
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</div>
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</body>
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</html>
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