[web-devel] Performance of Yesod 0.7 fourteen times slower than Rails 2.3?

[Sven Koschnicke (GFXpro)]

Hello,

I'm coming from a Rails background and was very impressed by the 
features of the Yesod Web Framework. Working on an trading app in Rails 
I wanted to port some features of this app to a Yesod app just to learn 
the framework and because we have some performance issues with Rails.

The first thing I noticed was that the Yesod app was significantly 
slower than the Rails app at trivial tasks. I am very astonished about 
that. I thought Rails should be slower because of its interpreted 
nature. I made some benchmarking and measured that a simple Rails app is 
fourteen times faster than a Yesod app that did the same thing (loading 
some records from the database and displaying them). Did I made a 
mistake or is my understanding, that the compiled app should be faster, 
just wrong?

I documented the results on github:

https://github.com/SKoschnicke/performance-test

Greetings
   Sven Koschnicke