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authorRyuta Kamizono <kamipo@gmail.com>2019-04-22 14:41:00 +0900
committerRyuta Kamizono <kamipo@gmail.com>2019-04-22 14:41:00 +0900
commitb6828fc91531ae0cc0a0f216705dd19112596301 (patch)
treeccff8b37db7f15d86fe128085640827269ba8eea /activerecord/test/cases/primary_keys_test.rb
parent02b5b8cb4357fe0eda3a5cc0afcfe3ff9f300806 (diff)
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PERF: 20% faster pk attribute access
I've realized that `user.id` is 20% slower than `user.name` in the benchmark (https://github.com/rails/rails/pull/35987#issuecomment-483882480). The reason that performance difference is that `self.class.primary_key` method call is a bit slow. Avoiding that method call will make almost attribute access faster and `user.id` will be completely the same performance with `user.name`. Before (02b5b8cb): ``` Warming up -------------------------------------- user.id 140.535k i/100ms user['id'] 96.549k i/100ms user.name 158.110k i/100ms user['name'] 94.507k i/100ms user.changed? 19.003k i/100ms user.saved_changes? 25.404k i/100ms Calculating ------------------------------------- user.id 2.231M (± 0.9%) i/s - 11.243M in 5.040066s user['id'] 1.310M (± 1.3%) i/s - 6.565M in 5.012607s user.name 2.683M (± 1.2%) i/s - 13.439M in 5.009392s user['name'] 1.322M (± 0.9%) i/s - 6.615M in 5.003239s user.changed? 201.999k (±10.9%) i/s - 1.007M in 5.091195s user.saved_changes? 258.214k (±17.1%) i/s - 1.245M in 5.007421s ``` After (this change): ``` Warming up -------------------------------------- user.id 158.364k i/100ms user['id'] 106.412k i/100ms user.name 158.644k i/100ms user['name'] 107.518k i/100ms user.changed? 19.082k i/100ms user.saved_changes? 24.886k i/100ms Calculating ------------------------------------- user.id 2.768M (± 1.1%) i/s - 13.936M in 5.034957s user['id'] 1.507M (± 2.1%) i/s - 7.555M in 5.017211s user.name 2.727M (± 1.5%) i/s - 13.643M in 5.004766s user['name'] 1.521M (± 1.3%) i/s - 7.634M in 5.018321s user.changed? 200.865k (±11.1%) i/s - 992.264k in 5.044868s user.saved_changes? 269.652k (±10.5%) i/s - 1.344M in 5.077972s ```
Diffstat (limited to 'activerecord/test/cases/primary_keys_test.rb')
-rw-r--r--activerecord/test/cases/primary_keys_test.rb8
1 files changed, 8 insertions, 0 deletions
diff --git a/activerecord/test/cases/primary_keys_test.rb b/activerecord/test/cases/primary_keys_test.rb
index 4759d3b6b2..511d7fc982 100644
--- a/activerecord/test/cases/primary_keys_test.rb
+++ b/activerecord/test/cases/primary_keys_test.rb
@@ -203,6 +203,14 @@ class PrimaryKeysTest < ActiveRecord::TestCase
assert_queries(3, ignore_none: true) { klass.create! }
end
+ def test_assign_id_raises_error_if_primary_key_doesnt_exist
+ klass = Class.new(ActiveRecord::Base) do
+ self.table_name = "dashboards"
+ end
+ dashboard = klass.new
+ assert_raises(ActiveModel::MissingAttributeError) { dashboard.id = "1" }
+ end
+
if current_adapter?(:PostgreSQLAdapter)
def test_serial_with_quoted_sequence_name
column = MixedCaseMonkey.columns_hash[MixedCaseMonkey.primary_key]