RJIT, a new JIT for Ruby
I work everyday with Rails.<p>In my experience, Ruby is not super slow.<p>In my machine, I can create 1M of empty hashs on 0.17sec.<p><pre><code>  Benchmark.measure{1000000.times{Hash.new}}
  @total = 0.1706789999999998s
</code></pre>
It's very good for a dynamic language.<p>But ActiveRecord (and Rails) are incredibly slow.<p>In my machine in 0.17sec only 2000 Models can be created.<p><pre><code>  Benchmark.measure{2000.times{User.new}}
  @total = @total=0.17733399999999833.

</code></pre>
Some SQL+Network runs in less than 10ms, in these cases Active Models creation is slower than that.<p>Yes, Rails can be slower than database access.