Are those calls to user_thumb and the other image operations doing resizing on the fly? That could account for low performance. Other then that I don't see anything that should be taking so much time. Can you do a benchmark of an action that just does a render :text => 'hello!' to get a baseline perf measurement?
-Ezra
I wouls say you have some other issue at this point. If a simple action ith render :text => 'foo' is that slow then no other rails actions can be faster. render :text is the minimum action rails can serve while exercising the full stack. So you need to figure out why your setup is so slow. I don't know about on windows but on linux or osx a render :text action should get much closer to 100req/sec when it doesnt access the db.
-Ezra
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