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  12    <title>Status for Andrew DeFaria: August  1, 2010 - August  7, 2010 Archives</title>
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  48     dc:title="Slow access on Unix UCM commands"
  49     dc:identifier="http://defaria.com/blogs/Status/archives/week_2010_08_01.html#entry-000740"
  50     dc:subject="General Electric"
  51     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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  53     dc:date="2010-08-02T18:48:43-06:00" />
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  58                      <h2 class="date-header">August  2, 2010</h2>
  59                      <a id="a000740"></a>
  60                      <div class="entry" id="entry-740">
  61                         <h3 class="entry-header">Slow access on Unix UCM commands</h3>
  62                         <div class="entry-content">
  63                            <div class="entry-body">
  64                               <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>
  65
  66 <div class=code><pre>
  67 Windows:time scm lsstream -short -invob \\p_cesb > /dev/null
  68 real    0m1.198s
  69 user    0m0.093s
  70 sys     0m0.123s
  71 Windows:time scm lsstream -short -invob \\p_ce > /dev/null
  72 real    0m9.526s
  73 user    0m0.045s
  74 sys     0m0.123s
  75 Windows:time scm lsact -short -invob $PVOB > /dev/null
  76 real    0m38.788s
  77 user    0m0.155s
  78 sys     0m0.233s
  79
  80 Unix:time scm lsstream -short -invob /vobs/p_cesb > /dev/null
  81 real    0m13.649s
  82 user    0m0.152s
  83 sys     0m0.203s
  84 Unix:time scm lsstream -short -invob /vobs/p_ce > /dev/null
  85 real    2m6.191s
  86 user    0m0.832s
  87 sys     0m1.501s
  88 Unix:time scm lsact -short -invob $PVOB > /dev/null
  89 real    8m52.516s
  90 user    0m3.647s
  91 sys     0m6.986s
  92 </pre></div>
  93
  94 <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>
  95
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  98                                  <span class="post-footers">Posted by  at  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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