title: django-nose taking 15 seconds even when there are zero test
body: <p>I'm using django-nose with <code>REUSE_DB=1</code> and have disabled all my tests just to see the setup time it takes. </p>
  
  <pre><code>localhost:MyProject rohitjangid$ python manage.py test  
  nosetests --verbosity 1
  
  ----------------------------------------------------------------------
  Ran 0 tests in 0.000s
  
  OK
  localhost:MyProject rohitjangid$ 
  </code></pre>
  
  <p>Actual time taken for the overall process was on an average 15 seconds.</p>
  
  <p>My obvious guess was mysql database and so I looked into logs and found that nose was running 
  some <code>ALTER TABLE</code> queries. My logs: </p>
  
  <ul>
  <li><a href="http://i.stack.imgur.com/HJECP.png" rel="nofollow">http://i.stack.imgur.com/HJECP.png</a>  </li>
  <li><a href="http://i.stack.imgur.com/tlsR0.png" rel="nofollow">http://i.stack.imgur.com/tlsR0.png</a></li>
  </ul>
  
  <p>Looking into logs, it seems like it is taking too much time even when it is not creating database everytime. Is this perfectly normal?</p>
  
  <p>my setup: OSX lion with mysql 5.5, django 1.3.1.</p>