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Rails
7
.
1
n
@a_matsuda
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self
🌋
Tw: @a_matsuda
🌋
GH: amatsuda
🌋
Rails
🌋
Asakusa.rb
🌋
RubyKaigi
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MAGMA City!?
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Ruby on Rails
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No content
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Framework Benchmarks
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jeremyevans/r
1
0
k
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jeremyevans/r
1
0
k
$ rake bench graphs R10K_APPS="rails roda"
/Users/a_matsuda/.rbenv/versions/3.3.0-dev/bin/ruby builder.rb '' rails 1 10
/Users/a_matsuda/.rbenv/versions/3.3.0-dev/bin/ruby builder.rb '' rails 2 10
/Users/a_matsuda/.rbenv/versions/3.3.0-dev/bin/ruby builder.rb '' rails 3 10
/Users/a_matsuda/.rbenv/versions/3.3.0-dev/bin/ruby builder.rb '' rails 4 10
/Users/a_matsuda/.rbenv/versions/3.3.0-dev/bin/ruby builder.rb '' roda 1 10
/Users/a_matsuda/.rbenv/versions/3.3.0-dev/bin/ruby builder.rb '' roda 2 10
/Users/a_matsuda/.rbenv/versions/3.3.0-dev/bin/ruby builder.rb '' roda 3 10
/Users/a_matsuda/.rbenv/versions/3.3.0-dev/bin/ruby builder.rb '' roda 4 10
running apps/rails_1_10.rb, pass 1, 11181 requests/second
running apps/rails_1_10.rb, pass 2, 11274 requests/second
running apps/rails_1_10.rb, pass 3, 10911 requests/second
running apps/rails_2_10.rb, pass 1, 9691 requests/second
running apps/rails_2_10.rb, pass 2, 10756 requests/second
running apps/rails_2_10.rb, pass 3, 10630 requests/second
running apps/rails_3_10.rb, pass 1, 10071 requests/second
running apps/rails_3_10.rb, pass 2, 10211 requests/second
running apps/rails_3_10.rb, pass 3, 10261 requests/second
running apps/rails_4_10.rb, pass 1, 9377 requests/second
running apps/rails_4_10.rb, pass 2, 9342 requests/second
running apps/rails_4_10.rb, pass 3, 9440 requests/second
running apps/roda_1_10.rb, pass 1, 431760 requests/second
running apps/roda_1_10.rb, pass 2, 428678 requests/second
running apps/roda_1_10.rb, pass 3, 433585 requests/second
running apps/roda_2_10.rb, pass 1, 240096 requests/second
running apps/roda_2_10.rb, pass 2, 236359 requests/second
running apps/roda_2_10.rb, pass 3, 239348 requests/second
running apps/roda_3_10.rb, pass 1, 178426 requests/second
running apps/roda_3_10.rb, pass 2, 184530 requests/second
running apps/roda_3_10.rb, pass 3, 185453 requests/second
running apps/roda_4_10.rb, pass 1, 121037 requests/second
running apps/roda_4_10.rb, pass 2, 144010 requests/second
running apps/roda_4_10.rb, pass 3, 141795 requests/second
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(Roda )
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🌋
Roda 40
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Rails
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No content
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DB
🌋
Rails
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No content
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Rails
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Really?
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Rails
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No content
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No content
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Rails
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No content
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Rails
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🌋
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No
🌋
🌋
⾒
🌋
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🌋
🤔
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No content
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No content
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(1)
🌋
Nate Asakusa.rb
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Nate Asakusa.rb
🌋
2022 5
🌋
Puma Nate Asakusa meetup
🌋
🌋
🌋
Rails
🌋
upstream
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(2)
🌋
☠
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🌋
2022 11
🌋
🦴
🌋
🌋
push
🌋
Ruby
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(3)
🌋
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🌋
nobu
🌋
OSS
🙏
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No content
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🌋
🌋
🌋
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🌋
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No content
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🌋
Object Allocations
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Object Allocations
🌋
🌋
GC
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Object Allocations
🌋
Object.new
🌋
'' [] {}
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🌋
Rails
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[199ec16d-cd73-4d9f-9941-a6754b86fcc3] Completed 200 OK in 2ms (Allocations: 249)
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🌋
Zero Allocation
🌋
( )
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No content
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How Do We Measure?
🌋
Rails : 7.0.4.2 (current newest
stable)
🌋
production env
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ObjectSpace GC.stat
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module Rails
def self.mem
# ͳΜ͔ ObjectSpace.count_objects ͕ࢥͬͨͱ͓ΓͷڍಈͰͳ͔ͬͨͷͰྗٕͰ
before = GC.stat(:total_allocated_objects)
result = yield
after = GC.stat(:total_allocated_objects)
puts "total_allocated: #{after - before - 1}"
result
ennd
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🌋
$ rails r 'Rails.mem {
1
0
0
.times {
a = [] } }'
🌋
total_allocated:
1
0
0
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No content
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Rails
🌋
web
Rack
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No content
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Rails::Engine
Rails::Engine.prepend(
Module.new {
def call(*)
Rails.mem do
super
end
end
}
)
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🌋
GC
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GC.disable
Rails.application.config.to_prepare do
GC.start
GC.disable
end
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scaffold
show
$ rails g scaffold post title
$ rails db:migrate
$ rails r 'Post.create! title: "Post1"'
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🌋
total_allocated:
1
7
5
7
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No content
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🌋
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🌋
SamSaffron/memory_profiler
🌋
ko
1
/allocation_tracer
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SamSaffron/memory_profiler
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module Rails
def self.memory_profiler
result = nil
MemoryProfiler.report { result = yield }.pretty_print(allocated_strings: 100, normalize_paths: true)
result
ennd
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🌋
allocated objects by location
🌋
allocated objects by class
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Allocated String Report
🌋
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show
🌋
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No content
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🌋
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🌋
🌋
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🌋
view render
render
🌋
Action View template
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show
def show
render html: 'Hello'
end
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🌋
Total allocated:
6
5
1
3
5
bytes
(
7
8
2
objects)
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set_post
🌋
@post
🌋
Active Record
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✂ show
- before_action :set_post, only: %i[ show edit update destroy ]
+ before_action :set_post, only: %i[ edit update destroy ]
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🌋
Total allocated:
5
9
0
4
7
bytes
(
7
0
1
objects)
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view
render
head :ok
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No content
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🌋
5
3
3
0
2
bytes (
6
3
4
objects)
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No content
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Rails
🌋
Rack
🌋
Rack Rails
🌋
action
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Rack
🌋
Rails::Engine#call
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Rack Rails
module Rails
class Prof
def initialize(app) = @app = app
def call(env) = Rails.memory_profiler { @app.call(env) }
end
application.config.middleware.use Prof
end
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action
class ApplicationController < ActionController::Base
def send_action(*)
p request.path
Rails.memory_profiler do
super
ennnd
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🌋
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🌋
2
0
7
2
bytes (
3
4
objects)
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No content
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No content
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🌋
loop do
🌋
🌋
&
🌋
🌋
end
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No content
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Array
# actionview/lib/action_view/lookup_context.rb
- if values == [:js]
+ if (values.length == 1) && (values[0] == :js)
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Range
- path[(i + 2)..-1]
+ path[(i + 2), path.length]
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Request
# actionpack/lib/action_dispatch/middleware/show_exceptions.rb
def call(env)
- request = ActionDispatch::Request.new env
@app.call(env)
rescue Exception => exception
+ request = ActionDispatch::Request.new env
if request.show_exceptions?
render_exception(request, exception)
else
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String#%
Array
# railties/lib/rails/rack/logger.rb
def started_request_message(request) # :doc:
- 'Started %s "%s" for %s at %s' % [
+ sprintf('Started %s "%s" for %s at %s',
request.raw_request_method,
request.filtered_path,
request.remote_ip,
- Time.now.to_default_s ]
+ Time.now.to_default_s)
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Rack middleware env
Array
# actionpack/lib/action_dispatch/journey/router.rb
req.path_parameters = tmp_params
- status, headers, body = route.app.serve(req)
+ _, headers, _ = response = route.app.serve(req)
if "pass" == headers["X-Cascade"]
req.script_name = script_name
@@ -56,7 +56,7 @@ def serve(req)
next
end
- return [status, headers, body]
+ return response
end
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No content
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🌋
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🌋
Rails 1
🌋
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🌋
🌋
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🌋
CPU
🌋
5
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Rails
🌋
🌋
Active Support
Action View
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7.0 edge Rails
(to be
7
.
1
) push
31ddd41e58
a81be79d4b
7a63a7a668
13783f36ad
4c23742a13
8b2f57dc6f
bd11e520a2
19a6979cfc
e0936d99a3
ae569eaef8
3d00c8b97f
3ade331e75
ca0d6521b1
0671acfeea
c9875d31cc
d247f491a4
3ba079526b
5653d7d56d
aa73d1ad52
076003d8e6
ffdbf17191
bfb0a6c211
a1c4aa87b3
d1461cdb61
6287c109d3
341b30be2e
f517eefe14
afa47b93a1
c49b8270e1
f6dbed5de4
2b33690bba
b378293c0d
946bc94e82
4ba87aae1f
2ead5132ea
bcfdfefc08
d15acd7ba6
ee94a5c34b
a18d90e7cd
dce7c1cd7c
663e8e1ccd
9e39c8a721
7d0a788167
4f61d46348
c5af4f4505
8317fffb85
e28e2f784e
9f141a423d
4732c91d14
a790203408
15ab7223c7
055f71cece
66386d3b4c
41c2c26dc6
974de71036
45dd422901
8b617e224b
01001028df
4fbc4bbe43
6576eec6a8
3baffd31be
b9beb3eee1
56333f3c69
c989a2908e
26f51f36fa
905c720c2c
bc3251f1be
78599ba1e8
59728911e4
b368c68c6a
4e7620b110
9a8d2de95b
351e726be5
cac0e04313
b9fe288d6d
a289f4c127
c73eafa634
60ffaac2e9
d8c05043c3
bdd090abf6
c0f16c16a3
9c66072b97
41b3e61735
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1 80
🌋
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PR
🌋
real world app
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🌋
0.1% 50
5%
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main push
🌋
🌋
Rails
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main push
4 CI
🌋
( )
🌋
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rack logger ipaddr
話
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🌋
Final Fight
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edge Rails
🌋
1
6
7
2
bytes (
2
5
objects)
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Rails
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⾒
🌋
memory_profiler
🤔
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🌋
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Rails
class C
def initialize = @x = nil
delegate :hash, to: :@x
def hash2() = @x.hash
end
c = C.new
p hash_via_delegate: c.hash
Rails.memory_profiler { c.hash }
#=> 1
p hash_via_method_call: c.hash2
Rails.memory_profiler { c.hash2 }
#=> 0
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delegate
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🌋
delegate
*args, **kwargs, &block
🌋
*args Array **kwargs Hash
🌋
... Array Hash
🌋
delegate
⾒
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🌋
https://bugs.ruby-lang.org/
issues/
1
9
1
6
5
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delegate
🌋
1
5
5
2
bytes (
2
2
objects)
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allocated objects by location
5 actionpack/lib/action_dispatch/http/response.rb:429
4 actionpack/lib/action_dispatch/http/response.rb:428
3 rack-3.0.4.2/lib/rack/headers.rb:151
3 actionpack/lib/action_dispatch/http/response.rb:443
2 rack-3.0.4.2/lib/rack/headers.rb:31
1 actionpack/lib/action_controller/metal.rb:224
1 actionpack/lib/action_dispatch/http/mime_type.rb:149
1 actionpack/lib/action_dispatch/http/response.rb:438
1 actionpack/lib/action_dispatch/http/response.rb:468
1 kagoshima02/app/controllers/application_controller.rb:6
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🌋
CONTENT_TYPE Match
🌋
ContentTypeHeader
🌋
Rack request header key String
🌋
charset downcase String
🌋
CONTENT_TYPE value String
🌋
Rack body Array
🌋
MimeType Symbol lookup to_s String
( Symbol GC )
🌋
body Buffer
🌋
send_action splat Array
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push ⾒
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🌋
CONTENT_TYPE Match
🌋
ContentTypeHeader
🌋
charset downcase String
🌋
CONTENT_TYPE value String
🌋
Rack body Array
🌋
body Buffer
🌋
send_action splat Array
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allocated objects by location
-----------------------------------
5 actionpack/lib/action_dispatch/http/response.rb:429
4 actionpack/lib/action_dispatch/http/response.rb:428
3 actionpack/lib/action_dispatch/http/response.rb:443
1 actionpack/lib/action_controller/metal.rb:224
1 actionpack/lib/action_dispatch/http/response.rb:438
1 actionpack/lib/action_dispatch/http/response.rb:468
1 kagoshima02/app/controllers/application_controller.rb:6
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head :ok Final Result
🌋
1
3
1
2
bytes (
1
6
objects)
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Rack middleware
🌋
2
9
9
3
8
bytes (
3
7
7
objects)
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🌋
Rack::Static
🌋
Rack::Static
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config.public_file_server.enab
led = false
🌋
2
4
1
4
6
bytes (
2
9
6
objects)
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🌋
ParameterFilter
🌋
URL
🌋
IP
🌋
Monitor
🌋
🌋
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ParameterFilter
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🌋
2
2
0
5
4
bytes (
2
6
8
objects)
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No content
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No content
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benchmark-ips
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Rails benchmark-
ips 5
Rails::Engine.prepend(
Module.new {
def call(*)
result = super
Benchmark.ips do |x|
x.report { super }
end
result
end
}
)
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head :ok IPS
🌋
7
.
0
:
1
.
9
4
8
k (±
4
.
1
%) i/s -
9
.
9
0
0
k in
5
.
0
9
1
7
1
0
s
🌋
7
.
1
:
6
.
5
0
6
k (±
9
.
0
%) i/s -
3
2
.
5
7
1
k in
5
.
0
4
7
1
5
5
s
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render plain: 'Hello' IPS
🌋
7
.
0
:
1
.
8
4
1
k (±
3
.
2
%) i/s -
9
.
2
0
4
k in
5
.
0
0
3
8
4
9
s
🌋
7
.
1
:
5
.
7
6
1
k (±
8
.
2
%) i/s -
2
8
.
9
4
4
k in
5
.
0
5
9
8
1
7
s
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No content
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"Rails
7
.
1
n "
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n =
3
4
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Action Controller
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Action View &
Active Record
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To Be Continued...
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end