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reducing-processing-time.html

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  1. <!DOCTYPE html
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  2.   SYSTEM "about:legacy-compat">
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  3. <html lang="en-us"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2019"><meta name="DC.rights.owner" content="(C) Copyright 2019"><meta name="DC.type" content="topic"><meta name="description" content="Several configuration changes can significantly reduce DITA-OT processing time."><meta name="DC.subject" content=", xtrf, xtrc, processing time, Java, required version, debugging, generate-debug-attributes"><meta name="keywords" content=", xtrf, xtrc, processing time, Java, required version, debugging, generate-debug-attributes"><meta name="DC.relation" scheme="URI" content="../topics/troubleshooting-overview.html"><meta name="DC.relation" scheme="URI" content="http://en.wikipedia.org/wiki/Solid-state_drive"><meta name="DC.relation" scheme="URI" content="http://en.wikipedia.org/wiki/RAM_drive"><meta name="DC.format" content="HTML5"><meta name="DC.identifier" content="reducing-processing-time"><meta name="DC.language" content="en-US"><link rel="stylesheet" type="text/css" href="../css/commonltr.css"><link rel="stylesheet" type="text/css" href="../css/dita-ot-doc.css"><title>Reducing processing time</title></head><body id="reducing-processing-time"><header role="banner"><div class="header">
    4. 

  4.   <p>DITA Open Toolkit</p>
    5. 

  5.   <hr>
    6. 

  6. </div></header><nav role="toc"><ul><li><a href="../index.html">DITA Open Toolkit 3.3</a></li><li><a href="../release-notes/index.html">Release Notes</a></li><li><a href="../topics/installing-client.html">Installing DITA-OT</a></li><li><a href="../topics/alternative-input-formats.html">Authoring formats</a></li><li><a href="../topics/building-output.html">Building output</a></li><li><a href="../parameters/index.html">Setting parameters</a></li><li><a href="../topics/customizing.html">Customizing DITA-OT</a></li><li><a href="../topics/troubleshooting-overview.html">Troubleshooting</a><ul><li><a href="../topics/log-files.html">Log files</a></li><li><a href="../topics/DITA-messages.html">DITA-OT error messages</a></li><li><a href="../topics/other-errors.html">Other error messages</a></li><li><a href="../topics/dita-command-help.html">Accessing help for the dita command</a></li><li><a href="../topics/enabling-debug-mode.html">Enabling debug mode</a></li><li><a href="../topics/increasing-the-jvm.html">Increasing Java memory</a></li><li class="active"><a href="../topics/reducing-processing-time.html">Reducing processing time</a></li></ul></li><li><a href="../reference/index.html">Reference</a></li><li><a href="../topics/dita-and-dita-ot-resources.html">Resources</a></li></ul></nav><main role="main"><article role="article" aria-labelledby="ariaid-title1">
    7. 

  7.    <h1 class="title topictitle1" id="ariaid-title1">Reducing processing time</h1>
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  8.    
    9. 

  9.    
    10. 

  10.    <div class="body"><p class="shortdesc">Several configuration changes can significantly reduce DITA-OT processing time.</p>
    11. 

  11.       <section class="section"><h2 class="title sectiontitle">Disable debug attribute generation</h2>
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  12.          
    13. 

  13.          <p class="p">The <span class="keyword parmname">generate-debug-attributes</span> parameter determines whether debugging attributes are
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  14.             generated in the temporary files. By changing the value to <code class="ph codeph">false</code>, DITA-OT will no longer
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  15.             generate the <code class="keyword markupname xmlatt">@xtrf</code> and <code class="keyword markupname xmlatt">@xtrc</code> debug attributes. This will make it more
    16. 

  16.             difficult to track down the source file location from which a given issue may have originated, but it will
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  17.             reduce the size of the temporary files. As a result, XML parsing will take less time and overall processing
    18. 

  18.             time will be reduced.</p>
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  19.       </section>
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  20.       <section class="section"><h2 class="title sectiontitle">Use a fast disk for the temporary directory</h2>
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  21.          
    22. 

  22.          <p class="p">DITA-OT keeps topic and map files as separate files and processes each file multiple times during
    23. 

  23.             preprocessing. Thus reading from disk, parsing XML, serializing XML, and writing to disk makes processing
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  24.             quite I/O intensive. Use either an
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  25.             <a class="xref" href="http://en.wikipedia.org/wiki/Solid-state_drive" target="_blank">SSD</a> or a
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  26.             <a class="xref" href="http://en.wikipedia.org/wiki/RAM_drive" target="_blank">RAM disk</a> for
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  27.             temporary files, and never use a temporary directory that is not located on the same machine as where the
    28. 

  28.             processing takes place.</p>
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  29.       </section>
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  30.       <section class="section"><h2 class="title sectiontitle">Reuse the JVM instance</h2>
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  31.          
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  32.          <p class="p">For all but extremely large source sets, the JVM will not have enough time to warm-up. By reusing the same
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  33.             JVM instance, the first few DITA-OT conversions will be “normal”, but when the JIT starts to kick in, the
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  34.             performance increase may be 2-10 fold. This is especially noticeable with smaller source sets, as much of
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  35.             the DITA-OT processing is I/O intensive.</p>
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  36.       </section>
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  37.       <section class="section"><h2 class="title sectiontitle">Use the latest Java version</h2>
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  38.          
    39. 

  39.          <p class="p">DITA-OT 2.0 to 2.3 require Java 7, and DITA-OT 2.4 and newer require Java 8. However, using a newer version
    40. 

  40.             of Java can further reduce processing time.</p>
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  41.       </section>
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  42.    </div>
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  43. 

  44.    <nav role="navigation" class="related-links"><div class="familylinks"><div class="parentlink"><strong>Parent topic:</strong> <a class="link" href="../topics/troubleshooting-overview.html" title="This section contains information about problems that you might encounter and how to resolve them.">Error messages and troubleshooting</a></div></div><div class="linklist"><strong>Collected links</strong><br><ul class="linklist"><li class="linklist"><a class="link" href="http://en.wikipedia.org/wiki/Solid-state_drive" target="_blank">SSD</a></li><li class="linklist"><a class="link" href="http://en.wikipedia.org/wiki/RAM_drive" target="_blank">RAM disk</a></li></ul></div></nav>
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  45. </article></main></body></html>
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