title: tool analyzing log4net logs
body: <p>Is there a tool which can be used to analyze log4net logs.</p>
  
  <p>Particulary I would like to extract two method calls by thread id and analyze the duration between the two, to create some statistics of call duration.</p>
  
  <p>Plus this over multiple (100x10Mb) files.</p>
  
  <p>I suppose <em>grep</em> would also do it.</p>