67 lines
4.5 KiB
HTML
67 lines
4.5 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 considerations in multithreaded applications" />
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<meta name="abstract" content="There are several performance considerations for multithreaded jobs on i5/OS." />
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<meta name="description" content="There are several performance considerations for multithreaded jobs on i5/OS." />
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<title>Performance considerations in multithreaded applications</title>
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<body id="rzahwpco-pcoco"><a name="rzahwpco-pcoco"><!-- --></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 considerations in multithreaded applications</h1>
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<div><p>There are several performance considerations for multithreaded
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jobs on <span class="keyword">i5/OS™</span>.</p>
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<p>The concepts that are described here pertain to all programming
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languages. For details about how each language enables a concept, refer to
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the <a href="../rzahg/rzahglanguages.htm">Language</a> topic
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in the information center for that specific language.</p>
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</div>
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<div>
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<ul class="ullinks">
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<li class="ulchildlink"><strong><a href="rzahwserco.htm">Multithreaded server recommendations</a></strong><br />
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When you write a typical server to take advantage of threads, a common design is to have a single listener thread waiting for client requests and multiple individual worker threads to perform the client's requested operations.</li>
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<li class="ulchildlink"><strong><a href="rzahwprico.htm">Job and thread priorities</a></strong><br />
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An <span class="keyword">i5/OS</span> thread
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competes with threads throughout the system for scheduling resources in addition
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to competing with other threads in the same job.</li>
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<li class="ulchildlink"><strong><a href="rzahwconco.htm">Contention among threads</a></strong><br />
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Contention occurs when one thread has to wait for another thread to finish using a resource.</li>
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<li class="ulchildlink"><strong><a href="rzahwpooco.htm">Effects of storage pool sizes on threaded applications</a></strong><br />
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The storage pool size specified for a subsystem affects the performance and number of threads you can create.</li>
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<li class="ulchildlink"><strong><a href="rzahwactco.htm">Activity levels of storage pools</a></strong><br />
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The activity level of a storage pool refers to the number of active threads within that storage pool.</li>
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<li class="ulchildlink"><strong><a href="rzahwperco.htm">Performance and threaded applications</a></strong><br />
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Job-level performance counters are updated by all the threads in a job.</li>
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</ul>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzahwovepo.htm" title="A thread is the path taken by a program while running, the steps performed, and the order in which the steps are performed.">Multithreaded applications</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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