defaria.com/blogs/Status/archives/week_2007_11_18.html

   1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
   2    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
   3 <html xmlns="http://www.w3.org/1999/xhtml" id="sixapart-standard">
   4 <head>
   5    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
   6    <meta name="generator" content="Movable Type 5.2.3" />
   7
   8    <link rel="stylesheet" href="http://defaria.com/blogs/Status/styles-site.css" type="text/css" />
   9    <link rel="alternate" type="application/atom+xml" title="Atom" href="http://defaria.com/blogs/Status/atom.xml" />
  10    <link rel="alternate" type="application/rss+xml" title="RSS 2.0" href="http://defaria.com/blogs/Status/index.xml"$>" />
  11
  12    <title>Status for Andrew DeFaria: November 18, 2007 - November 24, 2007 Archives</title>
  13
  14    <link rel="start" href="http://defaria.com/blogs/Status/" title="Home" />
  15    <link rel="prev" href="http://defaria.com/blogs/Status/archives/week_2007_11_11.html" title="November 11, 2007 - November 17, 2007" />
  16    <link rel="next" href="http://defaria.com/blogs/Status/archives/week_2007_12_02.html" title="December  2, 2007 - December  8, 2007" />
  17 </head>
  18 <body class="layout-one-column">
  19    <div id="container">
  20       <div id="container-inner" class="pkg">
  21
  22          <div id="banner">
  23             <div id="banner-inner" class="pkg">
  24                <h1 id="banner-header"><a href="http://defaria.com/blogs/Status/" accesskey="1">Status for Andrew DeFaria</a></h1>
  25                <h2 id="banner-description">Searchable status reports and work log</h2>
  26             </div>
  27          </div>
  28
  29          <div id="pagebody">
  30             <div id="pagebody-inner" class="pkg">
  31                <div id="alpha">
  32                   <div id="alpha-inner" class="pkg">
  33
  34                      <p class="content-nav">
  35                         <a href="http://defaria.com/blogs/Status/archives/week_2007_11_11.html">&laquo; November 11, 2007 - November 17, 2007</a> |
  36                         <a href="http://defaria.com/blogs/Status/">Main</a>
  37                         | <a href="http://defaria.com/blogs/Status/archives/week_2007_12_02.html">December  2, 2007 - December  8, 2007 &raquo;</a>
  38                      </p>
  39
  40
  41                      <!--
  42 <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
  43          xmlns:trackback="http://madskills.com/public/xml/rss/module/trackback/"
  44          xmlns:dc="http://purl.org/dc/elements/1.1/">
  45 <rdf:Description
  46     rdf:about="http://defaria.com/blogs/Status/archives/week_2007_11_18.html#entry-000692"
  47     trackback:ping="http://defaria.com/mt/mt-tb.cgi/79"
  48     dc:title="UCMWB 1.2.4 &amp; new comptree (IPC)"
  49     dc:identifier="http://defaria.com/blogs/Status/archives/week_2007_11_18.html#entry-000692"
  50     dc:subject="General Dynamics"
  51     dc:description=" Released UCMWB 1.2.4 Added exec call to Clearcase.pm which uses IPC rather than constantly invoking cleartool. Tests show an 8 fold increase in performance!..."
  52     dc:creator=""
  53     dc:date="2007-11-20T19:58:08-06:00" />
  54 </rdf:RDF>
  55 -->
  56
  57
  58                      <h2 class="date-header">November 20, 2007</h2>
  59                      <a id="a000692"></a>
  60                      <div class="entry" id="entry-692">
  61                         <h3 class="entry-header">UCMWB 1.2.4 & new comptree (IPC)</h3>
  62                         <div class="entry-content">
  63                            <div class="entry-body">
  64                               <ul>
  65   <li>Released UCMWB 1.2.4</li>
  66
  67   <li>Added exec call to Clearcase.pm which uses IPC rather than constantly invoking cleartool. Tests show an 8 fold increase in performance!</li>
  68 </ul>
  69
  70                               <p>Interesting results here. I changed my comptree utility from repeatedly executing cleartool, which is damn slow!, to using IPC. Even if the OS caches the executable setting up a process must take some time. Here are the results:</p>
  71
  72 <div class=code><pre>
  73 comptree v1.5 run at 20071120@17:17 with the following options:
  74 Using exec cleartool
  75 ...
  76 34936 elements compared successfully
  77 Errors: 0 Warnings 0
  78 Finished in <b>2 hours 25 minutes 57 seconds</b>
  79 </pre></div>
  80
  81 <p>Whereas using IPC (i.e. starting cleartool and feeding it commands and reading the output, using Expect) yields:</p>
  82
  83 <div class=code><pre>
  84 comptree v1.5 run at 20071120@16:46 with the following options:
  85 Using IPC cleartool
  86 ...
  87 34926 elements compared successfully
  88 Errors: 0 Warnings 0
  89 Finished in <b>27 minutes 51 seconds</b>
  90 </pre></div>
  91
  92 <p>This is an 8 fold increase in time!</p>
  93
  94 <p>Oh, and /prj/muosran/Build/P4.0.24_SwitcherConfigSpecs/RncSolarisTB.cs compares with no errors and is ready for you to test.</p>
  95
  96
  97                               <p class="entry-footer">
  98                                  <span class="post-footers">Posted by  at  7:58 PM</span> <span class="separator">|</span> <a class="permalink" href="http://defaria.com/blogs/Status/archives/000692.html">Permalink</a>
  99
 100                                  | <a href="http://defaria.com/blogs/Status/archives/000692.html#trackback">TrackBacks (0)</a>
 101                               </p>
 102                            </div>
 103                         </div>
 104                      </div>
 105
 106                   </div>
 107                </div>
 108             </div>
 109          </div>
 110       </div>
 111    </div>
 112 </body>
 113 </html>