Benchmarking test using ObjectSpace._id2ref() vs the current rails implementation of @records.each.

gistfile1.rb

Test Code:

  def test_benchmark_of_transactions
    time = Benchmark.measure do
      500.times do
        Topic.transaction do
          10000.times do
            Topic.new
          end
        end
      end
    end
    puts time
  end

Using ruby 1.9.3p194.

Current Rails Implementation Results:

$ ruby -Itest test/cases/transactions_test.rb -n test_benchmark_of_transactions
Using sqlite3
Run options: -n test_benchmark_of_transactions --seed 30080
# Running tests:
673.210000   0.170000 673.380000 (679.856112)
Finished tests in 680.141154s, 0.0015 tests/s, 0.0000 assertions/s.
1 tests, 0 assertions, 0 failures, 0 errors, 0 skips


ObjectSpace._id2ref() Results:

$ ruby -Itest test/cases/transactions_test.rb -n test_benchmark_of_transactions
test test/cases/transactions_test.rb -n test_benchmark_of_transactions
Using sqlite3
Run options: -n test_benchmark_of_transactions --seed 39892
# Running tests:
676.260000   0.010000 676.270000 (676.878263)
Finished tests in 677.190547s, 0.0015 tests/s, 0.0000 assertions/s.
1 tests, 0 assertions, 0 failures, 0 errors, 0 skips