80 lines
5.3 KiB
HTML
80 lines
5.3 KiB
HTML
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE 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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<html lang="en-us" xml:lang="en-us">
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<head>
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<meta name="DC.Type" content="concept" />
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<meta name="DC.Title" content="Subsystems, job queues, and memory pools" />
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<meta name="abstract" content="You can control work on the servers by working with the resources used to process jobs." />
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<meta name="description" content="You can control work on the servers by working with the resources used to process jobs." />
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<meta name="DC.Relation" scheme="URI" content="rzal2stop.htm" />
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<meta name="DC.Relation" scheme="URI" content="../rzaks/rzakssystemstructure.htm" />
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<meta name="DC.Relation" scheme="URI" content="../rzaks/rzaksaboutmempools.htm" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 1998, 2006" />
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<meta name="DC.Identifier" content="rzal2subsys" />
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<meta name="DC.Language" content="en-us" />
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<!-- GSA ADP Schedule Contract with IBM Corp. -->
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<link rel="stylesheet" type="text/css" href="./ibmdita.css" />
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<link rel="stylesheet" type="text/css" href="./ic.css" />
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<title>Subsystems, job queues, and memory pools</title>
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</head>
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<body id="rzal2subsys"><a name="rzal2subsys"><!-- --></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">Subsystems, job queues, and memory pools</h1>
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<div><p>You can control work on the servers by working with the resources
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used to process jobs.</p>
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<p>Subsystems, job queues, and memory pools are the basic parts of work management.
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You can work with subsystems and job queues to manage specific jobs or to
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adjust the system's work flow.</p>
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<p>To efficiently use system resources, different types of jobs require different
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processing instructions and system resources. To meet this need, the operating
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system creates unique operating environments called <em>subsystems</em>. Each
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subsystem has a set of system resources, especially a memory pool, that determines
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how quickly it can process jobs. Subsystems also have unique processing instructions
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and, in many cases, at least one associated job queue. The job queues hold
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incoming jobs from the users or applications until an associated subsystem
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has available resources. The job then moves from its queue into the subsystem
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where it is processed based on the instructions and resources available to
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that subsystem. Finally, any output that results from job processing gets
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handled and routed by the instructions in the job description.</p>
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<p>During this process, you may want to monitor a job's progress or adjust
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its priority. Also, if the iSeries™ server is having trouble processing certain
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types of jobs, you may need to adjust the subsystems resources.</p>
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<div class="section"><h4 class="sectiontitle">Work with subsystems, job queues and memory pools</h4><p>iSeries Navigator
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allows you to view subsystem properties, view job queues that are in use by
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an active subsystem, start and stop a subsystem, and adjust memory pools.
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These functions are available under <span class="uicontrol">Work Management</span> in iSeries Navigator.
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However, some subsystem commands are only available from the character-based
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interface.</p>
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</div>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzal2reference.htm" title="Learn about the essential components of the iSeries server, including the basics of work management, how to interact with the operating system, and system maintenance.">i5/OS concepts</a></div>
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</div>
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<div class="relconcepts"><strong>Related concepts</strong><br />
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<div><a href="rzal2stop.htm" title="Use this topic to safely shut down the server and to plan for controlled server restart operations.">Stop the server</a></div>
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<div><a href="../rzaks/rzakssystemstructure.htm">Structure of your system</a></div>
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<div><a href="../rzaks/rzaksjoblife.htm">A job's life</a></div>
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<div><a href="../rzaks/rzaksaboutsbs.htm">Subsystems</a></div>
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<div><a href="../rzaks/rzaksaboutmempools.htm">Memory pools</a></div>
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<div><a href="../rzaks/rzaksmanagesbs1.htm">Manage subsystems</a></div>
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<div><a href="../rzaks/rzaksmanagemp1.htm">Manage memory pools</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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