74 lines
4.6 KiB
HTML
74 lines
4.6 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 http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<meta name="security" content="public" />
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<meta name="Robots" content="index,follow" />
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<meta http-equiv="PICS-Label" content='(PICS-1.1 "http://www.icra.org/ratingsv02.html" l gen true r (cz 1 lz 1 nz 1 oz 1 vz 1) "http://www.rsac.org/ratingsv01.html" l gen true r (n 0 s 0 v 0 l 0) "http://www.classify.org/safesurf/" l gen true r (SS~~000 1))' />
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<meta name="DC.Type" content="concept" />
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<meta name="DC.Title" content="Performance data collection" />
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<meta name="abstract" content="With any software release, the support for new functions can cause an incremental change (increase or decrease) in performance for some workloads." />
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<meta name="description" content="With any software release, the support for new functions can cause an incremental change (increase or decrease) in performance for some workloads." />
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<meta name="DC.Relation" scheme="URI" content="rzahcswconcepts1.htm" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 2004, 2006" />
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<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 2004, 2006" />
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<meta name="DC.Format" content="XHTML" />
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<meta name="DC.Identifier" content="performancedatacollection" />
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<meta name="DC.Language" content="en-us" />
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<!-- All rights reserved. Licensed Materials Property of IBM -->
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<!-- US Government Users Restricted Rights -->
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<!-- Use, duplication or disclosure restricted by -->
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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>Performance data collection </title>
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</head>
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<body id="performancedatacollection"><a name="performancedatacollection"><!-- --></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 data collection </h1>
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<div><p>With any software release, the support for new functions can cause
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an incremental change (increase or decrease) in performance for some workloads.</p>
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<p>IBM makes a significant effort to minimize negative effects, and in most
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cases a change in performance is not observed. However, in a skip-release
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upgrade, there is a higher potential that the compound effect of incremental
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performance differences will be observed.</p>
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<p> To understand the performance characteristics of an upgrade, collect performance
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data both before and after the upgrade is complete. Following are two recommended
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performance collections:</p>
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<ul><li>Collect general performance data for one or more days by using Collection
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Services. <a href="gatherperfdata.htm#gatherperfdata">Gathering performance data for benchmark</a> contains
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information on ways to start Collection Services. </li>
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<li>Collect specific profile data for approximately an hour by running the
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following program in a batch job during a period of high activity on the server.
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To call this program, enter the command <samp class="codeph">CALL SYSPROF PARM(PEXDTAVxRy)</samp> where <em>x</em> and <em>y</em> indicate
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the <span class="keyword">i5/OS™</span> version and release
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numbers. <div class="note"><span class="notetitle">Note:</span> You cannot store PEX data from two different releases into
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the same library. </div>
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<pre>SYSPROF: PGM PARM(&LIB)
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DCL VAR(&LIB) TYPE(*CHAR) LEN(10) /* Library to store the data */
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/* Create a PEX definition to collect profile data. */
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ADDPEXDFN DFN(SYSPROF) TYPE(*TRACE) JOB((*ALL)) +
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TASK(*ALL) MAXSTG(1000000) INTERVAL(5) +
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TRCTYPE(*PRFDTA)
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/* If the definition already exists, assume it is ok. */
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MONMSG MSGID(CPFAF10)
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STRPEX SSNID(SYSPROFILE) DFN(SYSPROF)
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DLYJOB 3600
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ENDPEX SSNID(SYSPROFILE) DTALIB(&LIB)
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ENDPGM </pre>
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</li>
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</ul>
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<p>Save this data from both collections for future reference.</p>
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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="rzahcswconcepts1.htm" title="You and IBM together manage the use, documentation, and transfer of i5/OS licensed programs.">Concepts for software installation</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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