important JRuby 1.6 startup time regression launching JRuby script from JSR223
(12 sec -> 45 sec)
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Key: JRUBY-5498
URL: http://jira.codehaus.org/browse/JRUBY-5498
Project: JRuby
Issue Type: Bug
Components: Embedding
Affects Versions: JRuby 1.6
Environment: OS: Ubuntu Maverick 64 bits; Java: Java HotSpot(TM)
64-Bit Server VM (build 20.0-b06, mixed mode)
Reporter: Raphael Valyi
This a serious performance regression. startup time to launch the exact same
small JRuby program (see how to donwload it below)
- along with jruby-complete 1.5.6: 12 seconds
- along with jruby-complete trunk: 45 seconds!
(trunk is from today, GIT id 254d3d0cde5b27eba920ff26b08b5adf68f9ab5e )
The part of the program I'm testing here does something very simple in that
test: basically, it's just the standard jruby-complete.jar executable with the
following modifications:
- there is some 4 custom extra gems bundled in jruby.home
- the Main class is changed in to that class:
https://github.com/rvalyi/terminatooor/blob/master/src/com/akretion/OOORConsole.java
which basically only launch the standard IRB swing console.
The IRB Swing console start script has been modified a bit however in our case
to pre-require our custom gems and possible custom extensions:
https://github.com/rvalyi/terminatooor/blob/master/src/com/akretion/kettle/steps/terminatooor/ui/jirb_swing.rb
There is absolutely no code logic involved here from the 'ooor' bundled gem so
just don't bother about what it does.
testing it:
here is the exectable jar in both configurations:
- jruby-complete 1.5.6:
http://akretion.s3.amazonaws.com/code/jruby-ooor-1.5.6.jar
- jruby-complete trunk:
http://akretion.s3.amazonaws.com/code/jruby-ooor-trunk.jar
just test the startup time by doing:
java -jar jruby-ooor-xxx.jar
I'm pretty sure this regression occurs those last 3/4 weeks as I remembered I
tested it and it wasn't that slow.
If that is of any help here is how the jar is assembled:
https://github.com/rvalyi/terminatooor (build.xml and 'ant' task)
Hope this helps. Don't hesitate if you have question, I'm aslo rvalyi on
twitter for fast feedback.
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