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$LOAD_PATH.unshift File.expand_path(File.dirname(__FILE__) + '/../lib')
require 'rubygems'
require 'active_record'
ActiveRecord::Base.default_timezone = :local
ActiveRecord::Base.time_zone_aware_attributes = true
class TestModel < ActiveRecord::Base
self.table_name = 'mysql2_test'
end
def bench_allocations(feature, iterations = 10, batch_size = 1000)
puts "GC overhead for #{feature}"
TestModel.establish_connection(adapter: 'mysql2', database: 'test')
GC::Profiler.clear
GC::Profiler.enable
iterations.times { yield batch_size }
GC::Profiler.report($stdout)
GC::Profiler.disable
end
bench_allocations('coercion') do |batch_size|
TestModel.limit(batch_size).to_a.each do |r|
r.attributes.each_key do |k|
r.send(k.to_sym)
end
end
end
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