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I have no idea where you get 400ms on average. Here's the log for a blog post page of my site. It's a heavy and big page, it's on ruby 1.8.7 and rails 3, and I haven't done anything to make it faster. I could cache most of it rather easily. Completed 200 OK in 205ms (Views: 168.9ms | ActiveRecord: 23.2ms | Sphinx: 9.6ms) edit: a couple of notes. This is running on a cheap vps and would be faster on a real server. It…
? If you read the article, you can see that after their upgrade, the average time spent in ruby per page is 400ms.
It sounded to me as if you believed this was typical for a rails site. Maybe I read it wrong, but it isn't typical for a rails app that I've ever done.