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Bad memory leak in Arel 1.0.1?
Reported by James Harton | September 3rd, 2010 @ 12:25 AM
I have code that has happily been running on Rails 3.0.0.rc2 and previous betas without any issues that executes a query that should look like this:
SELECT posts.id FROM posts INNER JOIN mentions ON mentions.post_id = posts.id WHERE mentions.cluster_id = 4 AND posts.type != 'Notice'
Not a particularly hardcore query, my Ruby looks like this:
pt = Post.arel_table
mt = Mention.arel_table
mention_posts = mt.join(pt).on(mt[:post_id].eq(pt[:id])).where(mt[:cluster_id].eq(4)).where(pt[:type].eq('Notice').not).project(pt[:id])
When that last line is executed my Ruby process grows until it exceeds the available RAM on my machine or I kill it manually.
If I run that code from the command line and monitor it with:
ps auxww | head -1 ; for I in `jot - 1 60`; do ps auxww | grep "rai[l]s c"; sleep 1; done ; killall -KILL ruby
I get the following:
USER PID %CPU %MEM VSZ RSS TT STAT STARTED TIME COMMAND
jnh 41468 0.3 2.5 137380 52792 s000 S+ 11:19AM 0:16.11 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 1.9 2.6 137512 53604 s000 R+ 11:19AM 0:16.15 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 91.5 3.5 162252 74092 s000 R+ 11:19AM 0:17.19 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 98.6 4.3 185684 89472 s000 R+ 11:19AM 0:18.22 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 100.1 4.7 204100 99372 s000 R+ 11:19AM 0:19.25 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 99.2 4.8 197604 101108 s000 R+ 11:19AM 0:20.32 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 90.8 5.3 201464 111780 s000 R+ 11:19AM 0:21.34 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 98.1 5.7 236452 119932 s000 R+ 11:19AM 0:22.39 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 98.3 7.2 288468 150940 s000 R+ 11:19AM 0:23.44 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 97.0 6.6 216636 138492 s000 R+ 11:19AM 0:24.43 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 98.1 6.9 227524 143904 s000 R+ 11:19AM 0:25.46 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 98.9 7.1 231860 149180 s000 R+ 11:19AM 0:26.50 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 96.2 7.6 250680 158564 s000 R+ 11:19AM 0:27.54 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 100.1 8.1 256340 170068 s000 R+ 11:19AM 0:28.59 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 99.2 8.3 286724 173976 s000 R+ 11:19AM 0:29.64 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 99.2 12.4 390196 260628 s000 R+ 11:19AM 0:30.68 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 98.5 11.2 358484 235368 s000 R+ 11:19AM 0:31.70 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 96.2 11.5 374532 241836 s000 R+ 11:19AM 0:32.72 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 98.8 11.9 382220 250156 s000 R+ 11:19AM 0:33.75 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 98.2 12.3 398260 258012 s000 R+ 11:19AM 0:34.78 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 99.7 12.7 397444 265776 s000 R+ 11:19AM 0:35.84 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 97.7 13.1 432388 275076 s000 R+ 11:19AM 0:36.87 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 98.3 13.3 430420 278700 s000 R+ 11:19AM 0:37.87 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 98.1 16.1 608356 338672 s000 R+ 11:19AM 0:38.87 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 91.7 35.1 1053496 735192 s000 R+ 11:19AM 0:40.22 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 97.6 11.7 402700 245240 s000 R+ 11:19AM 0:41.23 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 99.3 12.0 408916 251552 s000 R+ 11:19AM 0:42.26 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 100.2 12.3 424140 257756 s000 R+ 11:19AM 0:43.28 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 96.2 12.8 429256 268156 s000 R+ 11:19AM 0:44.31 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 100.2 13.2 463224 276084 s000 R+ 11:19AM 0:45.35 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 98.9 13.5 459492 282476 s000 R+ 11:19AM 0:46.41 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 90.6 15.9 492452 333292 s000 R+ 11:19AM 0:47.39 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 94.2 14.0 451716 293232 s000 R+ 11:19AM 0:48.74 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 66.9 14.5 472184 303556 s000 R+ 11:19AM 0:50.20 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 86.7 14.9 477572 312220 s000 R+ 11:19AM 0:51.19 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 77.2 15.2 474040 318428 s000 R+ 11:19AM 0:52.11 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 91.5 15.5 509652 324636 s000 R+ 11:19AM 0:52.94 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 95.2 16.0 507172 335268 s000 R+ 11:19AM 0:53.94 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 99.1 18.7 588180 391588 s000 R+ 11:19AM 0:55.22 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 98.0 18.9 598980 396028 s000 R+ 11:19AM 0:56.25 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 70.0 19.0 606044 397752 s000 R+ 11:19AM 0:57.15 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 94.8 19.2 620360 403112 s000 R+ 11:19AM 0:58.12 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 98.8 19.7 624980 413832 s000 R+ 11:19AM 0:59.16 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 97.5 19.9 654244 418364 s000 R+ 11:19AM 1:00.20 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 98.3 20.4 654140 426864 s000 R+ 11:19AM 1:01.25 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 99.5 23.0 688484 483036 s000 R+ 11:19AM 1:02.29 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 17.6 39.2 1351268 822192 s000 R+ 11:19AM 1:03.41 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 3.0 39.6 1351268 829632 s000 S+ 11:19AM 1:03.44 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 3.6 39.9 1351268 837156 s000 R+ 11:19AM 1:03.48 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 1.5 40.0 1351268 839540 s000 R+ 11:19AM 1:03.49 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 1.8 40.4 1351268 846612 s000 R+ 11:19AM 1:03.52 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 0.3 40.4 1351268 847280 s000 S+ 11:19AM 1:03.53 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 0.4 40.4 1351268 847280 s000 S+ 11:19AM 1:03.53 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 1.8 40.5 1351268 849968 s000 S+ 11:19AM 1:03.55 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 3.9 41.0 1351268 860372 s000 R+ 11:19AM 1:03.59 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 3.4 42.3 1351268 886092 s000 R+ 11:19AM 1:03.68 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 10.0 44.2 1351268 925920 s000 S+ 11:19AM 1:03.81 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 56.4 43.5 1554404 912484 s000 R+ 11:19AM 1:04.07 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 7.5 46.1 1554404 967424 s000 S+ 11:19AM 1:04.22 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
jnh 41468 5.7 47.3 1554404 991440 s000 R+ 11:19AM 1:04.30 /Users/ jnh/.rvm/rubies/ruby-1.9.2-p0/bin/ruby script/rails c
As you can see that the Ruby process has grown to over 1GB of resident ram and an additional 1GB in swap.
Unfortunately I don't have the profiling skills to diagnose this much further, but I would really love to help.
Comments and changes to this ticket
-
James Harton September 3rd, 2010 @ 02:22 AM
FYI, this happens just the same in Ruby 1.8.7 as well as 1.9.2, it just takes longer to fill up all the RAM.
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James Harton September 3rd, 2010 @ 03:28 AM
Oh, and I tried to run memprof over it but it doesn't work on my 32bit MacBook Pro.
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James Harton September 3rd, 2010 @ 05:19 AM
Using a minimum viable testcase (http://gist.github.com/563393) I have the following profile information:
% cumulative self self total time seconds seconds calls ms/call ms/call name 37.63 1.81 1.81 556 3.26 7.21 Array#map 16.01 2.58 0.77 65481 0.01 0.01 Symbol#to_s 9.36 3.03 0.45 159 2.83 18.05 Kernel.require 7.69 3.40 0.37 187 1.98 16.52 Module#class_eval 4.78 3.63 0.23 1517 0.15 7.93 Array#each 4.37 3.84 0.21 17933 0.01 0.01 Hash#default 2.49 3.96 0.12 330 0.36 0.48 ActiveSupport::Inflector.constantize 1.25 4.02 0.06 2 30.00 2245.00 Kernel.load 1.04 4.07 0.05 322 0.16 0.16 Module#constants 1.04 4.12 0.05 90 0.56 1.33 Array#include? 0.83 4.16 0.04 165 0.24 0.24 Array#- 0.83 4.20 0.04 2639 0.02 0.02 String#== 0.83 4.24 0.04 64 0.62 3.44 Module#module_eval 0.83 4.28 0.04 161 0.25 64.84 ActiveSupport::Dependencies.new_constants_in 0.62 4.31 0.03 731 0.04 0.04 Symbol#== 0.62 4.34 0.03 670 0.04 0.04 String#split 0.62 4.37 0.03 8 3.75 3.75 Module#parent_name 0.62 4.40 0.03 326 0.09 0.15 Object#presence 0.42 4.42 0.02 159 0.13 37.42 ActiveSupport::Dependencies::Loadable.load_dependency 0.42 4.44 0.02 165 0.12 0.36 ActiveSupport::Dependencies.to_constant_name 0.42 4.46 0.02 577 0.03 0.03 Array#concat 0.42 4.48 0.02 560 0.04 0.04 Module#=== 0.42 4.50 0.02 326 0.06 0.06 Object#present? 0.42 4.52 0.02 161 0.12 0.12 ActiveSupport::Dependencies.load? 0.42 4.54 0.02 161 0.12 9.01 ActiveSupport::Dependencies::WatchStack#watch_namespaces 0.21 4.55 0.01 10 1.00 1.00 ActiveRecord::ConnectionAdapters::Column#simplified_type 0.21 4.56 0.01 531 0.02 0.02 Array#last 0.21 4.57 0.01 75 0.13 0.13 Class#inherited_with_inheritable_attributes 0.21 4.58 0.01 1 10.00 10.00 Module#alias_method_chain 0.21 4.59 0.01 5 2.00 2.00 ActiveSupport::Notifications.notifier 0.21 4.60 0.01 40 0.25 0.25 NilClass#method_missing 0.21 4.61 0.01 109 0.09 0.09 Module#to_s 0.21 4.62 0.01 973 0.01 0.01 Module#method_added 0.21 4.63 0.01 326 0.03 0.31 ActiveSupport::Dependencies.qualified_const_defined? 0.21 4.64 0.01 334 0.03 0.03 ActiveSupport::Dependencies.local_const_defined? 0.21 4.65 0.01 62 0.16 0.16 Module#extend_object 0.21 4.66 0.01 73 0.14 0.14 Kernel.instance_variable_defined? 0.21 4.67 0.01 30 0.33 0.33 Fixnum#to_s 0.21 4.68 0.01 6 1.67 20.00 ActiveRecord::Base#connection 0.21 4.69 0.01 4 2.50 30.00 Kernel.loop 0.21 4.70 0.01 332 0.03 0.03 String#empty? 0.21 4.71 0.01 138 0.07 2.25 Class#new 0.21 4.72 0.01 1 10.00 110.00 ActiveSupport::Notifications.instrumenter 0.21 4.73 0.01 657 0.02 0.02 Hash#[] 0.21 4.74 0.01 322 0.03 7.80 Module#local_constant_names 0.21 4.75 0.01 2 5.00 2285.00 ActiveSupport::Dependencies::ModuleConstMissing.const_missing 0.21 4.76 0.01 322 0.03 0.19 Module#local_constants 0.21 4.77 0.01 1 10.00 10.00 Arel::Project#initialize 0.21 4.78 0.01 165 0.06 0.06 ActiveSupport::Dependencies.log 0.21 4.79 0.01 177 0.06 0.06 Symbol#to_sym 0.21 4.80 0.01 3 3.33 6.67 ActiveRecord::Base#respond_to? 0.21 4.81 0.01 160 0.06 0.06 IO#set_encoding 0.00 4.81 0.00 4 0.00 2290.00 ActiveSupport::Dependencies.load_missing_constant 0.00 4.81 0.00 1 0.00 10.00 ActiveRecord::ConnectionAdapters::SQLiteAdapter#tables 0.00 4.81 0.00 6 0.00 0.00 Enumerable.any? 0.00 4.81 0.00 6 0.00 0.00 ActiveSupport::Dependencies.loaded 0.00 4.81 0.00 16 0.00 0.00 File#expand_path 0.00 4.81 0.00 4 0.00 0.00 Hash#include? 0.00 4.81 0.00 4 0.00 0.00 Set#include? 0.00 4.81 0.00 208 0.00 0.00 Hash#[]= 0.00 4.81 0.00 18 0.00 0.00 Set#add 0.00 4.81 0.00 161 0.00 0.00 ActiveSupport::Dependencies.mechanism 0.00 4.81 0.00 4 0.00 7.50 Module#parent 0.00 4.81 0.00 2 0.00 0.00 ActiveSupport::Dependencies.autoload_module! 0.00 4.81 0.00 2 0.00 0.00 ActiveSupport::Dependencies.autoloadable_module? 0.00 4.81 0.00 38 0.00 0.00 NilClass#nil? 0.00 4.81 0.00 2 0.00 0.00 ActiveSupport::Dependencies.warnings_on_first_load 0.00 4.81 0.00 8 0.00 0.00 Regexp#=~ 0.00 4.81 0.00 7 0.00 0.00 String#[] 0.00 4.81 0.00 6 0.00 0.00 String#gsub 0.00 4.81 0.00 2 0.00 0.00 String#upcase 0.00 4.81 0.00 2 0.00 0.00 ActiveSupport::Inflector.camelize 0.00 4.81 0.00 2 0.00 0.00 String#camelize 0.00 4.81 0.00 5 0.00 0.00 Array#uniq! 0.00 4.81 0.00 2 0.00 0.00 ActiveSupport::Dependencies.loadable_constants_for_path 0.00 4.81 0.00 278 0.00 0.00 Kernel.is_a? 0.00 4.81 0.00 4 0.00 0.00 Array#collect 0.00 4.81 0.00 322 0.00 0.00 ActiveSupport::Dependencies.constant_watch_stack 0.00 4.81 0.00 8 0.00 0.00 File#directory? 0.00 4.81 0.00 4 0.00 0.00 ActiveSupport::Dependencies.search_for_file 0.00 4.81 0.00 16 0.00 0.00 File#file? 0.00 4.81 0.00 24 0.00 0.00 File#join 0.00 4.81 0.00 8 0.00 0.00 ActiveSupport::Dependencies.autoload_paths 0.00 4.81 0.00 50 0.00 0.00 Exception#set_backtrace 0.00 4.81 0.00 50 0.00 0.00 NameError#initialize 0.00 4.81 0.00 50 0.00 0.00 Exception#initialize 0.00 4.81 0.00 4 0.00 0.00 Array#reject 0.00 4.81 0.00 98 0.00 0.00 Regexp#escape 0.00 4.81 0.00 23 0.00 0.00 Kernel.caller 0.00 4.81 0.00 6 0.00 0.00 String#underscore 0.00 4.81 0.00 374 0.00 0.00 Array#pop 0.00 4.81 0.00 161 0.00 0.00 ActiveSupport::Dependencies::WatchStack#pop_modules 0.00 4.81 0.00 161 0.00 9.81 ActiveSupport::Dependencies::WatchStack#new_constants 0.00 4.81 0.00 163 0.00 0.00 Array#* 0.00 4.81 0.00 6 0.00 0.00 ActiveSupport::Inflector.underscore 0.00 4.81 0.00 159 0.00 0.00 Array#blank? 0.00 4.81 0.00 6 0.00 0.00 String#downcase! 0.00 4.81 0.00 159 0.00 37.42 ActiveSupport::Dependencies::Loadable.require 0.00 4.81 0.00 6 0.00 0.00 String#tr! 0.00 4.81 0.00 124 0.00 0.00 Kernel.respond_to_missing? 0.00 4.81 0.00 86 0.00 0.00 Kernel.respond_to? 0.00 4.81 0.00 93 0.00 0.00 Class#inheritable_attributes 0.00 4.81 0.00 115 0.00 0.00 Kernel.instance_variable_set 0.00 4.81 0.00 80 0.00 0.00 String#gsub! 0.00 4.81 0.00 313 0.00 0.00 BasicObject#singleton_method_added 0.00 4.81 0.00 3 0.00 0.00 BasicObject#initialize 0.00 4.81 0.00 1 0.00 0.00 ActiveRecord::LogSubscriber#initialize 0.00 4.81 0.00 1 0.00 0.00 ActiveSupport::LogSubscriber#log_subscribers 0.00 4.81 0.00 1 0.00 0.00 Kernel.public_methods 0.00 4.81 0.00 1 0.00 0.00 ActiveSupport::Notifications::Fanout#initialize 0.00 4.81 0.00 25 0.00 0.00 Kernel.dup 0.00 4.81 0.00 3 0.00 0.00 ActiveSupport::Notifications::Fanout::Subscriber#initialize 0.00 4.81 0.00 6 0.00 0.00 Kernel.tap 0.00 4.81 0.00 6 0.00 0.00 Hash#clear 0.00 4.81 0.00 3 0.00 0.00 ActiveSupport::Notifications::Fanout#subscribe 0.00 4.81 0.00 3 0.00 3.33 ActiveSupport::Notifications.subscribe 0.00 4.81 0.00 1 0.00 10.00 ActiveSupport::LogSubscriber#attach_to 0.00 4.81 0.00 33 0.00 0.00 Kernel.instance_of? 0.00 4.81 0.00 30 0.00 0.00 Hash#extractable_options? 0.00 4.81 0.00 54 0.00 0.00 Array#extract_options! 0.00 4.81 0.00 40 0.00 0.00 Kernel.initialize_dup 0.00 4.81 0.00 10 0.00 0.00 Class#cattr_reader 0.00 4.81 0.00 49 0.00 0.00 Kernel.block_given? 0.00 4.81 0.00 10 0.00 1.00 Class#cattr_writer 0.00 4.81 0.00 10 0.00 1.00 Class#cattr_accessor 0.00 4.81 0.00 12 0.00 0.00 Hash#keys 0.00 4.81 0.00 225 0.00 0.00 NilClass#to_s 0.00 4.81 0.00 54 0.00 0.00 Symbol#inspect 0.00 4.81 0.00 11 0.00 0.00 String#initialize_copy 0.00 4.81 0.00 12 0.00 0.00 Module#alias_method 0.00 4.81 0.00 1 0.00 0.00 Module#public_method_defined? 0.00 4.81 0.00 2 0.00 0.00 Module#public 0.00 4.81 0.00 4 0.00 0.00 ActiveSupport::Dependencies.qualified_name_for 0.00 4.81 0.00 1 0.00 10.00 ActiveSupport::Deprecation.deprecate_methods 0.00 4.81 0.00 1 0.00 10.00 Module#deprecate 0.00 4.81 0.00 8 0.00 0.00 Class#class_attribute 0.00 4.81 0.00 25 0.00 0.00 Kernel.singleton_class 0.00 4.81 0.00 7 0.00 0.00 BasicObject#singleton_method_removed 0.00 4.81 0.00 15 0.00 0.00 Module#remove_method 0.00 4.81 0.00 15 0.00 0.00 Module#remove_possible_method 0.00 4.81 0.00 29 0.00 0.00 Module#define_method 0.00 4.81 0.00 1 0.00 0.00 ActiveRecord::Base#table_name_prefix= 0.00 4.81 0.00 1 0.00 0.00 ActiveRecord::Base#table_name_suffix= 0.00 4.81 0.00 46 0.00 0.00 Exception#exception 0.00 4.81 0.00 46 0.00 0.00 Exception#backtrace 0.00 4.81 0.00 4 0.00 0.00 Class#_stash_object_in_method 0.00 4.81 0.00 2 0.00 0.00 Class#_superclass_delegating_accessor 0.00 4.81 0.00 2 0.00 0.00 Class#superclass_delegating_accessor 0.00 4.81 0.00 2 0.00 0.00 Module#method_removed 0.00 4.81 0.00 4 0.00 0.00 Class#class_inheritable_reader 0.00 4.81 0.00 4 0.00 0.00 Class#class_inheritable_writer 0.00 4.81 0.00 4 0.00 0.00 Class#class_inheritable_accessor 0.00 4.81 0.00 5 0.00 0.00 Class#write_inheritable_attribute 0.00 4.81 0.00 1 0.00 0.00 ActiveRecord::Base#default_scoping= 0.00 4.81 0.00 29 0.00 0.00 String#to_i 0.00 4.81 0.00 84 0.00 0.00 BasicObject#equal? 0.00 4.81 0.00 43 0.00 0.00 Kernel.inspect 0.00 4.81 0.00 59 0.00 0.00 Module#instance_methods 0.00 4.81 0.00 53 0.00 0.00 Symbol#to_proc 0.00 4.81 0.00 330 0.00 0.18 Enumerable.inject 0.00 4.81 0.00 9 0.00 28.89 Module#delegate 0.00 4.81 0.00 7 0.00 0.00 Module#attr_accessor 0.00 4.81 0.00 52 0.00 0.00 Module#private 0.00 4.81 0.00 28 0.00 0.00 Module#protected 0.00 4.81 0.00 49 0.00 0.00 Module#append_features 0.00 4.81 0.00 59 0.00 0.00 Module#included 0.00 4.81 0.00 46 0.00 5.65 Module#include 0.00 4.81 0.00 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ActiveRecord::ConnectionAdapters::ConnectionHandler#retrieve_connection 0.00 4.81 0.00 6 0.00 18.33 ActiveRecord::Base#retrieve_connection 0.00 4.81 0.00 191 0.00 0.00 Module#name 0.00 4.81 0.00 6 0.00 20.00 Arel::Sql::Engine#connection 0.00 4.81 0.00 1 0.00 0.00 ActiveRecord::ConnectionAdapters::SQLiteAdapter#adapter_name 0.00 4.81 0.00 2 0.00 0.00 Arel::Sql::Engine#adapter_name 0.00 4.81 0.00 2 0.00 0.00 Time#initialize 0.00 4.81 0.00 2 0.00 0.00 Time#now 0.00 4.81 0.00 19 0.00 0.00 SQLite3::Database#encoding 0.00 4.81 0.00 3 0.00 0.00 SQLite3::Statement#initialize 0.00 4.81 0.00 16 0.00 0.00 Array#flatten 0.00 4.81 0.00 1 0.00 0.00 SQLite3::Statement#bind_params 0.00 4.81 0.00 16 0.00 0.00 SQLite3::Statement#step 0.00 4.81 0.00 16 0.00 0.00 SQLite3::Statement#done? 0.00 4.81 0.00 3 0.00 0.00 SQLite3::Statement#column_count 0.00 4.81 0.00 13 0.00 0.00 SQLite3::Statement#column_name 0.00 4.81 0.00 13 0.00 0.00 SQLite3::Statement#column_decltype 0.00 4.81 0.00 3 0.00 0.00 Integer#times 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Time#minus_with_coercion 0.00 4.81 0.00 1 0.00 0.00 ActiveSupport::Notifications::Event#initialize 0.00 4.81 0.00 1 0.00 0.00 ActiveRecord::LogSubscriber#runtime 0.00 4.81 0.00 1 0.00 0.00 Fixnum#+ 0.00 4.81 0.00 1 0.00 0.00 ActiveRecord::LogSubscriber#runtime= 0.00 4.81 0.00 1 0.00 0.00 ActiveSupport::BufferedLogger#debug? 0.00 4.81 0.00 1 0.00 0.00 String#% 0.00 4.81 0.00 1 0.00 0.00 String#squeeze 0.00 4.81 0.00 1 0.00 0.00 ActiveRecord::LogSubscriber#odd? 0.00 4.81 0.00 2 0.00 0.00 ActiveSupport::LogSubscriber#colorize_logging 0.00 4.81 0.00 2 0.00 0.00 ActiveSupport::LogSubscriber#color 0.00 4.81 0.00 4 0.00 0.00 ActiveSupport::BufferedLogger#buffer 0.00 4.81 0.00 1 0.00 0.00 StringIO#initialize 0.00 4.81 0.00 1 0.00 0.00 StringIO#write 0.00 4.81 0.00 1 0.00 0.00 StringIO#<< 0.00 4.81 0.00 1 0.00 0.00 StringIO#string 0.00 4.81 0.00 1 0.00 0.00 IO#write 0.00 4.81 0.00 1 0.00 0.00 ActiveSupport::BufferedLogger#clear_buffer 0.00 4.81 0.00 1 0.00 0.00 Mutex#synchronize 0.00 4.81 0.00 1 0.00 0.00 ActiveSupport::BufferedLogger#flush 0.00 4.81 0.00 1 0.00 0.00 ActiveSupport::BufferedLogger#auto_flush 0.00 4.81 0.00 1 0.00 0.00 ActiveSupport::BufferedLogger#add 0.00 4.81 0.00 1 0.00 0.00 ActiveSupport::BufferedLogger#debug 0.00 4.81 0.00 1 0.00 0.00 ActiveSupport::LogSubscriber#debug 0.00 4.81 0.00 1 0.00 0.00 ActiveRecord::LogSubscriber#sql 0.00 4.81 0.00 1 0.00 0.00 ActiveSupport::LogSubscriber#call 0.00 4.81 0.00 1 0.00 0.00 ActiveSupport::Notifications::Fanout::Subscriber#publish 0.00 4.81 0.00 1 0.00 0.00 ActiveSupport::Notifications::Fanout#publish 0.00 4.81 0.00 1 0.00 10.00 ActiveSupport::Notifications::Instrumenter#instrument 0.00 4.81 0.00 1 0.00 10.00 ActiveRecord::ConnectionAdapters::AbstractAdapter#log 0.00 4.81 0.00 1 0.00 10.00 ActiveRecord::ConnectionAdapters::SQLiteAdapter#execute 0.00 4.81 0.00 4 0.00 0.00 Module#parents 0.00 4.81 0.00 2 0.00 75.00 Arel::Table#initialize 0.00 4.81 0.00 2 0.00 80.00 ActiveRecord::Base#arel_table 0.00 4.81 0.00 1 0.00 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ActiveRecord::ConnectionAdapters::Column#extract_limit 0.00 4.81 0.00 10 0.00 0.00 ActiveRecord::ConnectionAdapters::Column#extract_precision 0.00 4.81 0.00 10 0.00 0.00 ActiveRecord::ConnectionAdapters::Column#extract_scale 0.00 4.81 0.00 169 0.00 0.00 Kernel.!~ 0.00 4.81 0.00 10 0.00 0.00 ActiveRecord::ConnectionAdapters::Column#type_cast 0.00 4.81 0.00 10 0.00 0.00 ActiveRecord::ConnectionAdapters::Column#extract_default 0.00 4.81 0.00 10 0.00 1.00 ActiveRecord::ConnectionAdapters::Column#initialize 0.00 4.81 0.00 2 0.00 10.00 ActiveRecord::ConnectionAdapters::SQLiteAdapter#columns 0.00 4.81 0.00 2 0.00 10.00 Arel::Table#columns 0.00 4.81 0.00 10 0.00 0.00 Arel::Sql::Attributes.for 0.00 4.81 0.00 72 0.00 0.00 Arel::Attribute#root 0.00 4.81 0.00 32 0.00 0.00 Arel::Attribute#initialize 0.00 4.81 0.00 10 0.00 0.00 Arel::Sql::Attributes.initialize 0.00 4.81 0.00 6 0.00 0.00 Arel::Header#initialize 0.00 4.81 0.00 7 0.00 2.86 Arel::Table#attributes 0.00 4.81 0.00 9 0.00 0.00 Arel::Attribute#named? 0.00 4.81 0.00 5 0.00 0.00 Arel::Header#find_by_name 0.00 4.81 0.00 7 0.00 1.43 Arel::Header#[] 0.00 4.81 0.00 7 0.00 4.29 Arel::Relation.[] 0.00 4.81 0.00 6 0.00 0.00 Arel::Predicates::Unary#initialize 0.00 4.81 0.00 6 0.00 0.00 Arel::Predicates::Binary#initialize 0.00 4.81 0.00 3 0.00 0.00 Arel::Attribute#eq 0.00 4.81 0.00 1 0.00 0.00 Arel::Relation::JoinOperation#join_class 0.00 4.81 0.00 1 0.00 0.00 Arel::Relation::JoinOperation#relation1 0.00 4.81 0.00 1 0.00 0.00 Arel::Relation::JoinOperation#relation2 0.00 4.81 0.00 1 0.00 0.00 Arel::Join#initialize 0.00 4.81 0.00 1 0.00 0.00 Arel::Relation::JoinOperation#on 0.00 4.81 0.00 1 0.00 0.00 Arel::Join#engine 0.00 4.81 0.00 3 0.00 0.00 Arel::Compound#initialize 0.00 4.81 0.00 2 0.00 0.00 Arel::Relation.externalizable? 0.00 4.81 0.00 2 0.00 0.00 Arel::Relation.externalize 0.00 4.81 0.00 6 0.00 0.00 Arel::Header#to_ary 0.00 4.81 0.00 30 0.00 0.00 Arel::Attribute#== 0.00 4.81 0.00 1 0.00 0.00 Array#| 0.00 4.81 0.00 1 0.00 0.00 Arel::Header#new 0.00 4.81 0.00 1 0.00 0.00 Arel::Header#union 0.00 4.81 0.00 22 0.00 0.00 Arel::Attribute#bind 0.00 4.81 0.00 4 0.00 2.50 Arel::Header#each 0.00 4.81 0.00 2 0.00 0.00 Arel::Header#bind 0.00 4.81 0.00 2 0.00 0.00 Arel::Join#attributes 0.00 4.81 0.00 2 0.00 5.00 Enumerable.select 0.00 4.81 0.00 2 0.00 5.00 Arel::Header#matching 0.00 4.81 0.00 2 0.00 5.00 Arel::Header#find_by_attribute 0.00 4.81 0.00 2 0.00 5.00 Arel::Attribute#find_correlate_in 0.00 4.81 0.00 2 0.00 0.00 Arel::Value#initialize 0.00 4.81 0.00 2 0.00 0.00 Arel::ObjectExtensions.bind 0.00 4.81 0.00 2 0.00 0.00 Arel::ObjectExtensions.find_correlate_in 0.00 4.81 0.00 2 0.00 5.00 Arel::Predicates::Binary#bind 0.00 4.81 0.00 2 0.00 5.00 Arel::Where#initialize 0.00 4.81 0.00 2 0.00 5.00 Arel::Relation.where 0.00 4.81 0.00 1 0.00 0.00 Arel::Predicates::Equality#complement 0.00 4.81 0.00 1 0.00 0.00 Arel::Predicates::Predicate#not 0.00 4.81 0.00 1 0.00 0.00 Arel::Compound#attributes 0.00 4.81 0.00 169 0.00 0.00 String#=~ 0.00 4.81 0.00 1 0.00 10.00 Arel::Relation.project 0.00 4.81 0.00 1 0.00 30.00 Dead#kennedy 0.00 4.81 0.00 1 0.00 30.00 Object#profile_me 0.00 4.81 0.00 1 0.00 4810.00 #toplevel -
James Harton September 3rd, 2010 @ 05:21 AM
Oh, and the other thing I have learned is that the amount of RAM is directly proportional to the number of fields each table has and is not related to the database driver.
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Rohit Arondekar December 12th, 2010 @ 02:13 AM
- Importance changed from “” to “Low”
James, can you confirm this on the latest version 3 release?
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rails March 13th, 2011 @ 12:00 AM
- Tag changed from “arel 1.0.1, memory leak, rails 3.0.0, arel, performance, rails3” to “arel 101, memory leak, rails 300, arel, performance, rails3”
- State changed from “new” to “open”
This issue has been automatically marked as stale because it has not been commented on for at least three months.
The resources of the Rails core team are limited, and so we are asking for your help. If you can still reproduce this error on the 3-0-stable branch or on master, please reply with all of the information you have about it and add "[state:open]" to your comment. This will reopen the ticket for review. Likewise, if you feel that this is a very important feature for Rails to include, please reply with your explanation so we can consider it.
Thank you for all your contributions, and we hope you will understand this step to focus our efforts where they are most helpful.
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rails March 13th, 2011 @ 12:00 AM
- State changed from “open” to “stale”
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<h2 style="font-size: 14px">Tickets have moved to Github</h2>
The new ticket tracker is available at <a href="https://github.com/rails/rails/issues">https://github.com/rails/rails/issues</a>
James Harton
Jeremy Kemper
Piotr Sarnacki
Rohit Arondekar