Today I noticed that my integration tests with nhibernate were runnning very slow on the build server. Very slow meaning 1 hour to run while they run for 6 minutes on my dev machine all 840 of them. Something was different.

I am using Finalbuilder 5.5 on my build machine and that uses the nunit console to do the dirty work for it.

So I tried running it in the nuint gui tool and there too it was slow.

So I clicked a bit on the tabs, one never knows when one might get lucky and low and behold I was lucky. The Log tab of the GUi builder was getting lots of work.

I know my readers (all 3 of you) prefer pictures over words so here is a picture.

Apparently nunit 2.4.6 has a config somewhere that says log4net should use debug level logging. Which slows down nhibernate like never before.

So I copy pasted my regular log4net nhibernate appender and other config things into the app.config of the test project

```xml <configSections> <section name=“log4net” type=“log4net.Config.Log4NetConfigurationSectionHandler,log4net” /> </configSections>

<!– This section contains the log4net configuration settings –> <log4net debug=“false”>

   &lt;appender name="rollingFile" type="log4net.Appender.RollingFileAppender,log4net" &gt;

  &lt;param name="File" value="nHibernate.log" /&gt;
  &lt;param name="AppendToFile" value="true" /&gt;
  &lt;param name="RollingStyle" value="Date" /&gt;
  &lt;param name="DatePattern" value="yyyy.MM.dd" /&gt;
  &lt;param name="StaticLogFileName" value="true" /&gt;
  &lt;param name="maxSizeRollBackups" value="10" /&gt;

  &lt;layout type="log4net.Layout.PatternLayout,log4net"&gt;
    &lt;param name="ConversionPattern" value="%d [%t] %-5p %c - %m%n" /&gt;

&lt;!-- Setup the root category, add the appenders and set the default priority --&gt;

  &lt;level value="Info"/&gt;
  &lt;appender-ref ref="rollingFile"/&gt;

&lt;logger name="NHibernate"&gt;
  &lt;level value="Warn" /&gt;
  &lt;appender-ref ref="rollingFile"/&gt;

&lt;logger name="NHibernate.Loader.Loader"&gt;
  &lt;level value="Warn" /&gt;
  &lt;appender-ref ref="rollingFile"/&gt;

</log4net>``` and added this to the first test, just to check if it was faster.

vbnet log4net.Config.XmlConfigurator.Configure() And now my integration tests are back to their normal slow self.

I think this problem will not occur in nunit 2.5 and above since they now use a different logger then log4net.