Comments on: JRuby slowdown from Rails 2.0.2 to 2.1.0 http://blog.huikau.com/2008/07/04/jruby-slowdown-from-rails-202-to-210/ ... finding time to write something useful is nontrivial ... Sat, 20 Dec 2008 03:58:34 -0500 http://wordpress.org/?v=2.9 hourly 1 By: Christian Seiler http://blog.huikau.com/2008/07/04/jruby-slowdown-from-rails-202-to-210/comment-page-1/#comment-231 Christian Seiler Thu, 17 Jul 2008 07:00:30 +0000 http://blog.huikau.com/?p=62#comment-231 I just found out that jirb turns on ObjectSpace which makes script/console pretty much useless for benchmarking. Numbers without ObjectSpace look much better: Rails 2.1 3.82 jruby -J-server -J-Xshare:off script/console 3.85 jruby -X-C -J-server -J-Xshare:off script/console 3.75 jruby -J-server -J-Djruby.compile.fastest=true -J-Xshare:off script/console I just found out that jirb turns on ObjectSpace which makes script/console pretty much useless for benchmarking. Numbers without ObjectSpace look much better:

Rails 2.1
3.82 jruby -J-server -J-Xshare:off script/console
3.85 jruby -X-C -J-server -J-Xshare:off script/console
3.75 jruby -J-server -J-Djruby.compile.fastest=true -J-Xshare:off script/console

]]> By: Christian Seiler http://blog.huikau.com/2008/07/04/jruby-slowdown-from-rails-202-to-210/comment-page-1/#comment-227 Christian Seiler Mon, 14 Jul 2008 18:32:46 +0000 http://blog.huikau.com/?p=62#comment-227 latest JRuby trunk runs the test faster with Rails 2.1 than with 2.0: JRuby rev7134 ------------- Rails 2.0 5.34 jruby -J-server -J-Xshare:off script/console 5.30 jruby -X-C -J-server -J-Xshare:off script/console Rails 2.1 5.39 jruby -J-server -J-Xshare:off script/console 5.53 jruby -X-C -J-server -J-Xshare:off script/console rev7165 ------- Rails 2.0 5.27 jruby -J-server -J-Xshare:off script/console 5.43 jruby -X-C -J-server -J-Xshare:off script/console 5.21 jruby -J-server -J-Djruby.compile.fastest=true -J-Xshare:off script/console Rails 2.1 5.23 jruby -J-server -J-Xshare:off script/console 5.31 jruby -X-C -J-server -J-Xshare:off script/console 5.18 jruby -J-server -J-Djruby.compile.fastest=true -J-Xshare:off script/console latest JRuby trunk runs the test faster with Rails 2.1 than with 2.0:

JRuby rev7134
————-
Rails 2.0
5.34 jruby -J-server -J-Xshare:off script/console
5.30 jruby -X-C -J-server -J-Xshare:off script/console

Rails 2.1
5.39 jruby -J-server -J-Xshare:off script/console
5.53 jruby -X-C -J-server -J-Xshare:off script/console

rev7165
——-
Rails 2.0
5.27 jruby -J-server -J-Xshare:off script/console
5.43 jruby -X-C -J-server -J-Xshare:off script/console
5.21 jruby -J-server -J-Djruby.compile.fastest=true -J-Xshare:off script/console

Rails 2.1
5.23 jruby -J-server -J-Xshare:off script/console
5.31 jruby -X-C -J-server -J-Xshare:off script/console
5.18 jruby -J-server -J-Djruby.compile.fastest=true -J-Xshare:off script/console

]]> By: Mike McKinney http://blog.huikau.com/2008/07/04/jruby-slowdown-from-rails-202-to-210/comment-page-1/#comment-222 Mike McKinney Fri, 04 Jul 2008 21:35:48 +0000 http://blog.huikau.com/?p=62#comment-222 @Christian: Mac OS X (10.4) I have not had a chance to check things out on Linux yet. @Christian: Mac OS X (10.4) I have not had a chance to check things out on Linux yet.

]]> By: Christian Seiler http://blog.huikau.com/2008/07/04/jruby-slowdown-from-rails-202-to-210/comment-page-1/#comment-221 Christian Seiler Fri, 04 Jul 2008 17:19:57 +0000 http://blog.huikau.com/?p=62#comment-221 Oh, with my setup things are even worse for JRuby. Setup: JRuby 1.1.2 / Ubuntu / latst JDK6 / activerecord-jdbc-adapter 0.8.1 RAILS 2.1 5.95 jdk6 -J-server 2.68 MRI RAILS 2.0 5.45 jdk6 -J-server 3.1 MRI So Rails 2.1 is faster with MRI while it's slower with JRuby. And JRuby/AR-JDBC is generally much slower than MRI. @Mike: Which OS are you on? Oh, with my setup things are even worse for JRuby.
Setup: JRuby 1.1.2 / Ubuntu / latst JDK6 / activerecord-jdbc-adapter 0.8.1

RAILS 2.1
5.95 jdk6 -J-server
2.68 MRI

RAILS 2.0
5.45 jdk6 -J-server
3.1 MRI

So Rails 2.1 is faster with MRI while it’s slower with JRuby.
And JRuby/AR-JDBC is generally much slower than MRI.

@Mike: Which OS are you on?

]]> By: Mike McKinney http://blog.huikau.com/2008/07/04/jruby-slowdown-from-rails-202-to-210/comment-page-1/#comment-220 Mike McKinney Fri, 04 Jul 2008 14:35:21 +0000 http://blog.huikau.com/?p=62#comment-220 @Vladimir : interesting you saw no difference... @Vladimir : interesting you saw no difference…

]]> By: Mike McKinney http://blog.huikau.com/2008/07/04/jruby-slowdown-from-rails-202-to-210/comment-page-1/#comment-219 Mike McKinney Fri, 04 Jul 2008 14:32:09 +0000 http://blog.huikau.com/?p=62#comment-219 @Christian Seller : ruby 1.8.6 for both Rails 2.0.2 and 2.1.0 were about 5.06 so there was no noticeable slowdown there @Christian Seller : ruby 1.8.6 for both Rails 2.0.2 and 2.1.0 were about 5.06 so there was no noticeable slowdown there

]]> By: Vladimir Sizikov http://blog.huikau.com/2008/07/04/jruby-slowdown-from-rails-202-to-210/comment-page-1/#comment-218 Vladimir Sizikov Fri, 04 Jul 2008 08:41:07 +0000 http://blog.huikau.com/?p=62#comment-218 I don't actually see much of a difference, in both JRuby and Ruby, the newer rails/activerecord is slower by 10% or so. So, JRuby is getting faster (and the trunk is faster than released version 1.1.2), but newer activerecord is a bit slower with both JRuby and MRI, and I'm not sure why. I don’t actually see much of a difference, in both JRuby and Ruby, the newer rails/activerecord is slower by 10% or so.

So, JRuby is getting faster (and the trunk is faster than released version 1.1.2), but newer activerecord is a bit slower with both JRuby and MRI, and I’m not sure why.

]]> By: Christian Seiler http://blog.huikau.com/2008/07/04/jruby-slowdown-from-rails-202-to-210/comment-page-1/#comment-217 Christian Seiler Fri, 04 Jul 2008 08:29:39 +0000 http://blog.huikau.com/?p=62#comment-217 And the MRI numbers of the same benchmark? And the MRI numbers of the same benchmark?

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