Ruby on rails Ruby Postgresql PGconn.connect初始化最多需要60秒
尝试在windows下进行一些rails开发，我发现与postgres的初始连接需要60秒。我深入研究了activerecord postgresql适配器，并在connect方法中添加了一些评测Ruby on rails Ruby Postgresql PGconn.connect初始化最多需要60秒,ruby-on-rails,ruby,performance,postgresql,startup,Ruby On Rails,Ruby,Performance,Postgresql,Startup,尝试在windows下进行一些rails开发，我发现与postgres的初始连接需要60秒。我深入研究了activerecord postgresql适配器，并在connect方法中添加了一些评测 require 'ruby-prof' GC::Profiler.enable GC.start RubyProf.start p @connection_parameters @connection = PGconn.conne
require 'ruby-prof'
GC::Profiler.enable
GC.start
RubyProf.start
p @connection_parameters
@connection = PGconn.connect(@connection_parameters)
result = RubyProf.stop
printer = RubyProf::FlatPrinter.new(result)
printer.print(STDOUT)
puts GC::Profiler.report
STDOUT.flush
%self total self wait child calls name
99.94 52.258 52.257 0.000 0.001 1 PG::Connection#initialize
0.06 0.031 0.031 0.000 0.000 1 Kernel#p
0.00 0.001 0.001 0.000 0.000 1 Array#pop
0.00 0.000 0.000 0.000 0.000 1 String#sub
0.00 0.000 0.000 0.000 0.000 1 Array#each
0.00 0.000 0.000 0.000 0.000 3 Symbol#to_s
0.00 0.000 0.000 0.000 0.000 1 Hash#each
0.00 0.000 0.000 0.000 0.000 1 Enumerable#map
0.00 0.000 0.000 0.000 0.000 1 Hash#merge!
0.00 0.000 0.000 0.000 0.000 1 Array#zip
0.00 0.000 0.000 0.000 0.000 3 String#to_s
0.00 0.000 0.000 0.000 0.000 36 Symbol#to_sym
0.00 0.000 0.000 0.000 0.000 3 <Class::PG::Connection>#quote_connstr
0.00 0.000 0.000 0.000 0.000 1 Enumerable#find
0.00 0.000 0.000 0.000 0.000 1 Module#instance_methods
0.00 0.000 0.000 0.000 0.000 3 String#gsub
0.00 0.000 0.000 0.000 0.000 1 Kernel#is_a?
0.00 0.000 0.000 0.000 0.000 1 Array#last
0.00 0.001 0.000 0.000 0.001 1 <Class::PG::Connection>#parse_connect_args
0.00 0.000 0.000 0.000 0.000 1 Array#join
0.00 52.258 0.000 0.000 52.258 1 <Class::PG::Connection>#connect
0.00 0.000 0.000 0.000 0.000 2 String#inspect
0.00 0.000 0.000 0.000 0.000 2 Symbol#inspect
0.00 0.000 0.000 0.000 0.000 1 Hash#inspect
0.00 0.000 0.000 0.000 0.000 1 String#%
0.00 52.289 0.000 0.000 52.289 1 ActiveRecord::ConnectionAdapters::PostgreSQLAdapter#connect
* indicates recursively called methods
GC 36 invokes.
Index Invoke Time(sec) Use Size(byte) Total Size(byte) Total Object GC Time(ms)
1 12.609 12175480 22293120 557328 125.00000000000000000000
$ time PGUSER=username PGPASSWORD=password ruby -rpg -rruby-prof -e "GC::Profiler.enable; GC.start; RubyProf.start; settings = {:host => 'localhost', :dbname => 'dbname_development'}; PGconn.connect(settings); r=RubyProf.stop; RubyProf::FlatPrinter.new(r).print(STDOUT); puts GC::Profiler.report; STDOUT.flush"
Measure Mode: wall_time
Thread ID: 20316120
Fiber ID: 20135520
Total: 2.675508
Sort by: self_time
%self total self wait child calls name
100.00 2.676 2.676 0.000 0.000 1 PG::Connection#initialize
0.00 0.000 0.000 0.000 0.000 1 String#sub
0.00 0.000 0.000 0.000 0.000 3 String#to_s
0.00 0.000 0.000 0.000 0.000 3 <Class::PG::Connection>#quote_connstr
0.00 0.000 0.000 0.000 0.000 3 Symbol#to_s
0.00 0.000 0.000 0.000 0.000 1 Hash#each
0.00 0.000 0.000 0.000 0.000 1 Enumerable#map
0.00 0.000 0.000 0.000 0.000 1 Hash#merge!
0.00 0.000 0.000 0.000 0.000 1 Array#zip
0.00 0.000 0.000 0.000 0.000 3 String#gsub
0.00 0.000 0.000 0.000 0.000 46 Symbol#to_sym
0.00 0.000 0.000 0.000 0.000 1 Array#each
0.00 0.000 0.000 0.000 0.000 1 Enumerable#find
0.00 0.000 0.000 0.000 0.000 1 Module#instance_methods
0.00 0.000 0.000 0.000 0.000 1 Array#pop
0.00 0.000 0.000 0.000 0.000 1 Kernel#is_a?
0.00 0.000 0.000 0.000 0.000 1 Array#last
0.00 0.000 0.000 0.000 0.000 1 <Class::PG::Connection>#parse_connect_args
0.00 0.000 0.000 0.000 0.000 1 Array#join
0.00 2.676 0.000 0.000 2.676 1 <Class::PG::Connection>#connect
* indicates recursively called methods
GC 14 invokes.
Index Invoke Time(sec) Use Size(byte) Total Size(byte) Total Object GC Time(ms)
1 0.562 895840 1338240 33456 15.62500000000000000000
real 0m3.795s
user 0m0.015s
sys 0m0.046s
$ ruby -v
ruby 2.3.1p112 (2016-04-26 revision 54768) [x64-mingw32]
$ gem list pg --local
pg (0.19.0 x64-mingw32)