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  12    <title>Status for Andrew DeFaria: Slow access on Unix UCM commands</title>
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  25     dc:title="Slow access on Unix UCM commands"
  26     dc:identifier="http://defaria.com/blogs/Status/archives/000740.html"
  27     dc:subject="General Electric"
  28     dc:description="Found certain UCM commands to be 11-13 times slower on Unix than on Windows. Even though the registry host is the same host I was executing the commands on! Windows:time scm lsstream -short -invob \\p_cesb &gt; /dev/null real 0m1.198s user..."
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  30     dc:date="2010-08-02T18:48:43-06:00" />
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  61                      <a id="a000740"></a>
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  63                         <h3 class="entry-header">Slow access on Unix UCM commands</h3>
  64                         <div class="entry-content">
  65                            <div class="entry-body">
  66                               <p>Found certain UCM commands to be 11-13 times slower on Unix than on Windows. Even though the registry host is the same host I was executing the commands on!</p>
  67
  68 <div class=code><pre>
  69 Windows:time scm lsstream -short -invob \\p_cesb > /dev/null
  70 real    0m1.198s
  71 user    0m0.093s
  72 sys     0m0.123s
  73 Windows:time scm lsstream -short -invob \\p_ce > /dev/null
  74 real    0m9.526s
  75 user    0m0.045s
  76 sys     0m0.123s
  77 Windows:time scm lsact -short -invob $PVOB > /dev/null
  78 real    0m38.788s
  79 user    0m0.155s
  80 sys     0m0.233s
  81
  82 Unix:time scm lsstream -short -invob /vobs/p_cesb > /dev/null
  83 real    0m13.649s
  84 user    0m0.152s
  85 sys     0m0.203s
  86 Unix:time scm lsstream -short -invob /vobs/p_ce > /dev/null
  87 real    2m6.191s
  88 user    0m0.832s
  89 sys     0m1.501s
  90 Unix:time scm lsact -short -invob $PVOB > /dev/null
  91 real    8m52.516s
  92 user    0m3.647s
  93 sys     0m6.986s
  94 </pre></div>
  95
  96 <p>Why is the Unix machine 11 – 13 times slower at getting information out of the Clearcase registry than a Windows client? Note the same does not hold true for other Clearcase registry queries (e.g. lsview takes the same amount of time on both platforms) but querying UCM stream information on the Unix system is vobdog slow! It’s not slow for projects or baselines but just streams… and activities.</p>
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 104                            <span class="post-footers">Posted by  on August  2, 2010  6:48 PM</span> <span class="separator">|</span> <a class="permalink" href="http://defaria.com/blogs/Status/archives/000740.html">Permalink</a>
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