At. / Config / environment.rb to remove the following Note:
config.action_controller.session_store = :active_record_store


Session storage allows the use of active_record_store way to test a very simple request:

class QuickReController < ApplicationController
        def index
                render :text=>"OK!"
        end
end


After testing will:
# config.action_controller.session_store = :active_record_store

Comment out this sentence, and then test the method.

Same deployment, the same pressure,
Found using Session storage active_record_store way 60TPS not only the methods, there is no method of using Session storage has 260TPS! My server is 4 * thin, front to do load balancing with Apache.

Under the U.S. to ask, is there a better way to enable Session to update the table to read faster, or another storage Sessin faster, but the mechanisms and active_record_store similar in order to avoid big changes.