Rails rspec speedup

gistfile1.txt

http://blog.carbonfive.com/2011/02/02/crank-your-specs/
https://makandracards.com/makandra/950-speed-up-rspec-by-deferring-garbage-collection
https://github.com/tmm1/perftools.rb

RUBY_HEAP_MIN_SLOTS=500000
RUBY_HEAP_SLOTS_INCREMENT=500000
RUBY_HEAP_SLOTS_GROWTH_FACTOR=1
RUBY_GC_MALLOC_LIMIT=100000000
RUBY_HEAP_FREE_MIN=500000

class ActiveRecord::Base
  mattr_accessor :shared_connection
  @@shared_connection = nil

  def self.connection
    @@shared_connection || retrieve_connection
  end
end

  ActiveRecord::Base.shared_connection = ActiveRecord::Base.connection
  config.use_transactional_fixtures = true