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author | Guo Xiang Tan <tgx_world@hotmail.com> | 2015-09-07 11:56:16 +0800 |
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committer | Guo Xiang Tan <tgx_world@hotmail.com> | 2015-09-07 12:45:42 +0800 |
commit | 52b2ab9e01dd6d0062c1af46abd2ef9fac2dd584 (patch) | |
tree | 3fe9c2f48afa7a45ab6f426fe5e2f05ec31b7747 /activesupport/test/constantize_test_cases.rb | |
parent | 47e06c988e8377d04a6a6e28e798b06187326d87 (diff) | |
download | rails-52b2ab9e01dd6d0062c1af46abd2ef9fac2dd584.tar.gz rails-52b2ab9e01dd6d0062c1af46abd2ef9fac2dd584.tar.bz2 rails-52b2ab9e01dd6d0062c1af46abd2ef9fac2dd584.zip |
Cache check if `default_scope` has been overridden.
Benchmark Script:
```
begin
require 'bundler/inline'
rescue LoadError => e
$stderr.puts 'Bundler version 1.10 or later is required. Please update your Bundler'
raise e
end
gemfile(true) do
source 'https://rubygems.org'
# gem 'rails', github: 'rails/rails', ref: 'f1f0a3f8d99aef8aacfa81ceac3880dcac03ca06'
gem 'rails', path: '~/rails'
gem 'arel', github: 'rails/arel', branch: 'master'
gem 'rack', github: 'rack/rack', branch: 'master'
gem 'sass'
gem 'sprockets-rails', github: 'rails/sprockets-rails', branch: 'master'
gem 'sprockets', github: 'rails/sprockets', branch: 'master'
gem 'pg'
gem 'benchmark-ips'
end
require 'active_record'
require 'benchmark/ips'
ActiveRecord::Base.establish_connection('postgres://postgres@localhost:5432/rubybench')
ActiveRecord::Migration.verbose = false
ActiveRecord::Schema.define do
create_table :users, force: true do |t|
t.string :name, :email
t.timestamps null: false
end
end
class User < ActiveRecord::Base; end
attributes = {
name: "Lorem ipsum dolor sit amet, consectetur adipiscing elit.",
email: "foobar@email.com",
}
1000.times { User.create!(attributes) }
Benchmark.ips(5, 3) do |x|
x.report('where with hash') { User.where(name: "Lorem ipsum dolor sit amet, consectetur adipiscing elit.") }
x.report('where with string') { User.where("users.name = ?", "Lorem ipsum dolor sit amet, consectetur adipiscing elit.") }
x.compare!
end
key =
if RUBY_VERSION < '2.2'
:total_allocated_object
else
:total_allocated_objects
end
before = GC.stat[key]
User.where(name: "Lorem ipsum dolor sit amet, consectetur adipiscing elit.")
after = GC.stat[key]
puts "Total Allocated Object: #{after - before}"
```
Stackprof output truncated.
```
TOTAL (pct) SAMPLES (pct) FRAME
52 (10.6%) 10 (2.0%) ActiveRecord::Scoping::Default::ClassMethods#build_default_scope
```
Before:
```
Calculating -------------------------------------
where with hash 2.789k i/100ms
where with string 4.407k i/100ms
-------------------------------------------------
where with hash 29.170k (± 1.9%) i/s - 147.817k
where with string 46.954k (± 2.7%) i/s - 237.978k
Comparison:
where with string: 46954.3 i/s
where with hash: 29169.9 i/s - 1.61x slower
Total Allocated Object: 85
Calculating -------------------------------------
all 16.773k i/100ms
-------------------------------------------------
all 186.102k (± 3.6%) i/s - 939.288k
```
After:
```
Calculating -------------------------------------
where with hash 3.014k i/100ms
where with string 4.623k i/100ms
-------------------------------------------------
where with hash 31.524k (± 1.3%) i/s - 159.742k
where with string 49.948k (± 2.3%) i/s - 249.642k
Comparison:
where with string: 49948.3 i/s
where with hash: 31524.3 i/s - 1.58x slower
Total Allocated Object: 84
Calculating -------------------------------------
all 20.139k i/100ms
-------------------------------------------------
all 227.860k (± 2.5%) i/s - 1.148M
```
Diffstat (limited to 'activesupport/test/constantize_test_cases.rb')
0 files changed, 0 insertions, 0 deletions