Apache/Passenger/RoR Slow - But Why
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I am running Ubuntu (64Bit) with Apache 2.2.17, Passenger 3.0.11, Ruby 1.9.3 and Rails 3.2.6

When accessing the web page (index.html) on my webpage the request takes ages to complete, somewhere around 30 second in extreme cases.

The server has plenty of memory available (top shows more than 4GB free), the Apache processes (there are 10 of them) each show 0% CPU in top and the load is also almost 0 and there are hardly any DB accesses as I cache most of the things with memcached.

The log files of Apache as well as Rails do not show any errors, on the contrary the render times shown in the RubyOnRails log file show excellent values (<100 ms).

So where to go from here? 