http://blogs.msdn.com/b/mohamed_el_ashmawi/archive/2011/09/23/sharepoint-2010-capacity-management-log-parser.aspxLog Parser is a powerful tool to extract useful usage information from IIS logs. It can be used for data sources other than IIS log files (XML files, CSV files, registry, event logs, etc.), but for the SharePoint 2010 usage scenario, we will need IISen-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)http://blogs.msdn.com/b/mohamed_el_ashmawi/archive/2011/09/23/sharepoint-2010-capacity-management-log-parser.aspx#10229934Tue, 25 Oct 2011 18:08:02 GMT91d46819-8472-40ad-a661-2c78acb4018c:10229934Sunil<p>Hi Good post.</p> <p>i am getting following error while trying to parse the sharepoint 2010 IIS log data.</p> <p>Cannot find &#39;#Fields&#39; directive in header of file &quot;c:\logs\TK5-FINSFW-05-2011</p> <p> &nbsp;1024-0857.log&quot;. Lines 1 to 220773 have been ignored</p> <p>Cannot find &#39;#Fields&#39; directive in header of file &quot;c:\logs\TK5-FINSFW-05-2011</p> <p> &nbsp;1024-0927.log&quot;. Lines 1 to 349417 have been ignored</p> <p>Do I need to change anything on th elog files?</p> <div style="clear:both;"></div><img src="http://blogs.msdn.com/aggbug.aspx?PostID=10229934" width="1" height="1">