182 lines
12 KiB
HTML
182 lines
12 KiB
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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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<meta name="DC.Type" content="reference" />
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<meta name="DC.Title" content="Performance data files: QAPMJOBWT" />
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<meta name="abstract" content="This database file contains information about job, task, and thread wait conditions." />
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<meta name="description" content="This database file contains information about job, task, and thread wait conditions." />
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<meta name="DC.Relation" scheme="URI" content="rzahxapsparent.htm" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 1998, 2006" />
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<meta name="DC.Identifier" content="rzahxqapmjobwt" />
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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 files: QAPMJOBWT</title>
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</head>
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<body id="rzahxqapmjobwt"><a name="rzahxqapmjobwt"><!-- --></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 files: QAPMJOBWT</h1>
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<div><p>This database file contains information about job, task, and thread
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wait conditions.</p>
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<div class="section"><p>At least one record will be written for each job, task, or thread
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that consumed CPU during the interval (multiple records are possible especially
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during service activities).</p>
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<p><img src="./delta.gif" alt="Start of change" />The purpose of this
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file is to account for the time a job (this means a task, primary thread,
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or secondary thread) spends waiting and to provide some indication as to the
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type of wait. Since the reasons for a wait are too numerous to handle individually,
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they are grouped into sets of functionally related waits. For each group,
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both the number of waits and time the job spent waiting are reported. The
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QAPMJOBWTD file provides a description of the type of wait conditions for
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each counter set.<img src="./deltaend.gif" alt="End of change" /></p>
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<p>Although the file contains fields for up to 16 sets
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of counters, not all may be used. The number of counters is reported in field
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JWTNUM. If the number of instrumented counter sets is greater than 16, an
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additional record or records are written for each reported job.</p>
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<p><img src="./delta.gif" alt="Start of change" />User
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of this file should be aware of the dynamic nature of the content of this
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file. Counter sets can be added or redefined by the new release of the operating
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system. In addition, IBM<sup>®</sup> service representatives can define new counter sets
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or redefine existing counter sets to allow more granular or more specialized
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view of the job wait statistics. As a result, user cannot assume that the
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content of this file is always the same.<img src="./deltaend.gif" alt="End of change" /></p>
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<div class="tablenoborder"><!-- Link to dynamic table -->
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<SCRIPT language="Javascript" type="text/javascript" src="../rzahg/iccommon.js"></SCRIPT>
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<SCRIPT language="Javascript" type="text/javascript">
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//<![CDATA[
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//Do not split up the following string. Keep it on one line.
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var textA = "<p>To easily compare and sort the data in this table, use the <a href='rzahxqapmjobwt.xml'>interactive table<\/a>.<\/p>";
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if (isIE5) {
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document.writeln(textA);
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}
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//]]>
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</SCRIPT>
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<!-- End of link to dynamic table --><table cellpadding="4" cellspacing="0" summary="" frame="border" border="1" rules="all"><thead align="left"><tr><th valign="top" width="25%" id="d0e31">Field Name</th>
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<th valign="top" width="50%" id="d0e33">Description</th>
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<th valign="top" width="25%" id="d0e35">Attribute</th>
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</tr>
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</thead>
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<tbody><tr><td valign="top" width="25%" headers="d0e31 ">INTNUM</td>
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<td valign="top" width="50%" headers="d0e33 ">Interval number: The nth sample database interval based on the start
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time specified in the <span class="cmdname">Create Performance Data (CRTPFRDTA)</span> command.</td>
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<td valign="top" width="25%" headers="d0e35 ">PD (5,0)</td>
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</tr>
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<tr><td valign="top" width="25%" headers="d0e31 ">DTETIM</td>
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<td valign="top" width="50%" headers="d0e33 ">Interval date (yymmdd) and time (hhmmss): The date and time of the
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sample interval.</td>
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<td valign="top" width="25%" headers="d0e35 ">C (12)</td>
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</tr>
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<tr><td valign="top" width="25%" headers="d0e31 ">INTSEC</td>
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<td valign="top" width="50%" headers="d0e33 ">Elapsed interval seconds: The number of seconds since the last sample
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interval.</td>
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<td valign="top" width="25%" headers="d0e35 ">PD (7,0)</td>
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</tr>
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<tr><td valign="top" width="25%" headers="d0e31 ">DTECEN</td>
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<td valign="top" width="50%" headers="d0e33 ">Century digit: where 0 indicates 19XX and 1 indicates 20XX.</td>
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<td valign="top" width="25%" headers="d0e35 ">C (1)</td>
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</tr>
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<tr><td valign="top" width="25%" headers="d0e31 ">JWNAME</td>
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<td valign="top" width="50%" headers="d0e33 ">Job / task name.</td>
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<td valign="top" width="25%" headers="d0e35 ">C (16)</td>
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</tr>
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<tr><td valign="top" width="25%" headers="d0e31 ">JWUSER</td>
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<td valign="top" width="50%" headers="d0e33 ">Job user.</td>
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<td valign="top" width="25%" headers="d0e35 ">C (10)</td>
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</tr>
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<tr><td valign="top" width="25%" headers="d0e31 ">JWNBR</td>
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<td valign="top" width="50%" headers="d0e33 ">Job number.</td>
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<td valign="top" width="25%" headers="d0e35 ">C (6)</td>
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</tr>
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<tr><td valign="top" width="25%" headers="d0e31 ">JWTDE</td>
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<td valign="top" width="50%" headers="d0e33 ">System task identifier.</td>
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<td valign="top" width="25%" headers="d0e35 ">C (8)</td>
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</tr>
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<tr><td valign="top" width="25%" headers="d0e31 "><img src="./delta.gif" alt="Start of change" />JWCURT<img src="./deltaend.gif" alt="End of change" /></td>
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<td valign="top" width="50%" headers="d0e33 "><img src="./delta.gif" alt="Start of change" />Current Wait Time: The time in milliseconds the job has spent in the
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current wait. See JWCURB field for the counter set (bucket) which will be
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updated when the current wait completes. (This time is not included in other
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wait counter sets).<img src="./deltaend.gif" alt="End of change" /></td>
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<td valign="top" width="25%" headers="d0e35 "><img src="./delta.gif" alt="Start of change" />B (9,0)<img src="./deltaend.gif" alt="End of change" /></td>
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</tr>
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<tr><td valign="top" width="25%" headers="d0e31 ">JWCURE</td>
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<td valign="top" width="50%" headers="d0e33 ">Reserved.</td>
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<td valign="top" width="25%" headers="d0e35 ">B (9,0)</td>
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</tr>
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<tr><td valign="top" width="25%" headers="d0e31 "><img src="./delta.gif" alt="Start of change" />JWCURB<img src="./deltaend.gif" alt="End of change" /></td>
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<td valign="top" width="50%" headers="d0e33 "><img src="./delta.gif" alt="Start of change" />Current Counter Set (bucket): If this field is non-zero, it reflects
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the counter set that will be updated when the wait completes.<img src="./deltaend.gif" alt="End of change" /></td>
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<td valign="top" width="25%" headers="d0e35 "><img src="./delta.gif" alt="Start of change" />B (4,0)<img src="./deltaend.gif" alt="End of change" /></td>
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</tr>
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<tr><td valign="top" width="25%" headers="d0e31 ">JWDSEQ</td>
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<td valign="top" width="50%" headers="d0e33 ">Description sequence number: Identifies the QAPMJOBWTD records associated
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with this wait data.</td>
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<td valign="top" width="25%" headers="d0e35 ">B (4,0)</td>
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</tr>
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<tr><td valign="top" width="25%" headers="d0e31 "><img src="./delta.gif" alt="Start of change" />JWBGN<img src="./deltaend.gif" alt="End of change" /></td>
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<td valign="top" width="50%" headers="d0e33 "><img src="./delta.gif" alt="Start of change" />Beginning number of the first counter set reported in this record.
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(see Note 1)<img src="./deltaend.gif" alt="End of change" /></td>
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<td valign="top" width="25%" headers="d0e35 "><img src="./delta.gif" alt="Start of change" />B (4,0)<img src="./deltaend.gif" alt="End of change" /></td>
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</tr>
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<tr><td valign="top" width="25%" headers="d0e31 ">JWCT01</td>
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<td valign="top" width="50%" headers="d0e33 ">Count 1. The number of times the job encountered wait conditions associated
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with this group.</td>
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<td valign="top" width="25%" headers="d0e35 ">B (9,0)</td>
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</tr>
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<tr><td valign="top" width="25%" headers="d0e31 ">JWTM01</td>
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<td valign="top" width="50%" headers="d0e33 ">Time 1. The time in milliseconds the job spent waiting within this
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group.</td>
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<td valign="top" width="25%" headers="d0e35 ">B (9,0)</td>
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</tr>
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<tr><td valign="top" width="25%" headers="d0e31 "><img src="./delta.gif" alt="Start of change" />JWCTnn JWTMnn<img src="./deltaend.gif" alt="End of change" /></td>
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<td valign="top" width="50%" headers="d0e33 "><img src="./delta.gif" alt="Start of change" />Count and time are repeated for up to 16 counter sets per record. The
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first record reports counter sets 1 to 16. If there are more than 16 counter
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sets, the second record for the same job reports counter sets 17 to 32. (also
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see Note 1)<img src="./deltaend.gif" alt="End of change" /></td>
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<td valign="top" width="25%" headers="d0e35 "><img src="./delta.gif" alt="Start of change" />(B (9,0) + B (9,0) ) * 15<img src="./deltaend.gif" alt="End of change" /></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="note"><span class="notetitle">Note:</span> <img src="./delta.gif" alt="Start of change" /><ol><li>When QAPMJOBWT file was created from data collected on a system with operating
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system version prior to <span class="keyword">i5/OS™</span> V5R4,
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up to 32 counter sets can be reported, and all reported counter sets should
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be considered to obtain the complete set of wait state data for the job.<p>When
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data was collected on a system with operating system version <span class="keyword">i5/OS</span> V5R4
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or later, only the first 16 counter sets should be used for the complete set
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of job wait state data.</p>
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<p>Counter sets with numbers greater than 16 (reported
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in the second record for the job) represent additional information about wait
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conditions and will only appear on a system with service activity in progress.
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Data for these counter sets should normally be ignored and only used under
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instruction from IBM service representative.</p>
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</li>
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<li>Wait counters are updated when a job wakes up from a wait; therefore,
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counters for a job that is currently waiting will not change and the job will
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not even be reported if it has done no processing in the interval. When the
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wait is eventually reported, it may be longer than the interval it was reported
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in.</li>
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</ol>
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<img src="./deltaend.gif" alt="End of change" /></div>
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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="rzahxapsparent.htm" title="Managing performance on iSeries systems requires the use of a variety of specialized applications. Each of these applications offers a specific insight into system performance. This topic explains several applications and the intended use of each application.">Applications for performance management</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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