I''m not sure what ActiveRecord support status is for ruby 1.9.1, so I apologize if this report is premature. By the way, I''m only using ActiveRecord here, not Rails. I notice a 4x slow down in my program when I switch to 1.9.1. I''ve narrowed it down to this # works fine class fast < ActiveRecord::Base end # 4x slower (I need to do this in my program because I''m building table from the arbitrary csv input) slow = Class.new ActiveRecord::Base The slow.connection.execute and a few other methods are 10x slower in ruby 1.9.1 but are fine in ruby 1.8.7. Benchmarking method call from these 2 different ways of defining a class doesn''t reveal anything (speed is ,practically speaking, the same). Any body ran into this problem? Thank you in advance. I''m using: activerecord 2.2.2 activesuport 2.2.2 ar-extensions 0.8.0 sqlite3-ruby 1.2.4 on RedHat Linux 2.6.9 A sample code to demonstrate it is as follow: require ''ar-extensions'' require ''fastercsv'' ActiveRecord::Base.establish_connection :database => '':memory:'', :adapter => ''sqlite3'' ActiveRecord::Schema.define do create_table ''bubububu'' do |t| t.string :user, :machine, :command t.integer :duration, :pid t.datetime :time end end data = FasterCSV.read ARGV[0] # This is fine in ruby 1.8.7 and 1.9.1 #class Egg < ActiveRecord::Base # set_table_name "bubububu" #end #Egg.import [:pid, :user, :time, :duration, :machine, :command], data, :validate => false # This ''import'' is fine in ruby 1.8.7 but 4x slow in 1.9.1 egg = Class.new ActiveRecord::Base do set_table_name "bubububu" end egg.import [:pid, :user, :time, :duration, :machine, :command], data, :validate => false --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---