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

and added this to the first test, just to check if it was faster.

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.