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  12    <title>Status for Andrew DeFaria: UCMWB 1.2.4 & new comptree (IPC)</title>
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  25     dc:title="UCMWB 1.2.4 &amp; new comptree (IPC)"
  26     dc:identifier="http://defaria.com/blogs/Status/archives/000692.html"
  27     dc:subject="General Dynamics"
  28     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!..."
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  30     dc:date="2007-11-20T19:58:08-06:00" />
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  62                      <div class="entry" id="entry-692">
  63                         <h3 class="entry-header">UCMWB 1.2.4 & new comptree (IPC)</h3>
  64                         <div class="entry-content">
  65                            <div class="entry-body">
  66                               <ul>
  67   <li>Released UCMWB 1.2.4</li>
  68
  69   <li>Added exec call to Clearcase.pm which uses IPC rather than constantly invoking cleartool. Tests show an 8 fold increase in performance!</li>
  70 </ul>
  71                            </div>
  72                            <div id="more" class="entry-more">
  73                               <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>
  74
  75 <div class=code><pre>
  76 comptree v1.5 run at 20071120@17:17 with the following options:
  77 Using exec cleartool
  78 ...
  79 34936 elements compared successfully
  80 Errors: 0 Warnings 0
  81 Finished in <b>2 hours 25 minutes 57 seconds</b>
  82 </pre></div>
  83
  84 <p>Whereas using IPC (i.e. starting cleartool and feeding it commands and reading the output, using Expect) yields:</p>
  85
  86 <div class=code><pre>
  87 comptree v1.5 run at 20071120@16:46 with the following options:
  88 Using IPC cleartool
  89 ...
  90 34926 elements compared successfully
  91 Errors: 0 Warnings 0
  92 Finished in <b>27 minutes 51 seconds</b>
  93 </pre></div>
  94
  95 <p>This is an 8 fold increase in time!</p>
  96
  97 <p>Oh, and /prj/muosran/Build/P4.0.24_SwitcherConfigSpecs/RncSolarisTB.cs compares with no errors and is ready for you to test.</p>
  98
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 102                            <span class="post-footers">Posted by  on November 20, 2007  7:58 PM</span> <span class="separator">|</span> <a class="permalink" href="http://defaria.com/blogs/Status/archives/000692.html">Permalink</a>
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