Re: [jruby-user] Re: JRE 7 / JRuby 1.7.13 - fatal error precompiling assets for Rails 3.2.x application

Something that sped up our asset compilation process a ton was switching from uglifier.js to the google closure compiler:

By adding this gem to your Gemfile:

gem 'closure-compiler’

and setting the rails javascript compressor to closure compiler:

config.assets.js_compressor = :closure

https://github.com/documentcloud/closure-compiler/


On Jul 13, 2014, at 1:41 PM, Christian MICHON <[email protected]> wrote:

> An excellent idea. Careful though: JDK8 is mandatory for Nashorn.
> 
> And I understood just now why therubyrhino: rails complex stack for asset compilation. Why not sprockets instead?
> 
> On Jul 14, 2014 1:38 AM, "Chris Seaton" <[email protected]> wrote:
> Rhino is not a fast implementation of JS - whether or not it’s integrated into JRuby via therubyrhino. Is anyone working on a therubynashorn yet?
> 
> Chris
> 
> On 13 Jul 2014, at 18:33, TJG <[email protected]> wrote:
> 
>> Salut Christian;
>> 
>> Thanks for your observation about the memory allocation. Perhaps that was the original problem. 
>> 
>> No, I didn't move my project from JRuby to nodejs. I just removed therubyrhino javascript interpreter and now let the precompilation of assets depend on node.js instead
>> https://github.com/sstephenson/execjs#readme
>> 
>> I do not understand the mechanics of it all, yet, but this change was certainly a life-saver. 
>> 
>> With no other changes (i.e. no increased memory or anything like that), my assets now precompile without failure by the JVM. 
>> 
>> 
>> Tim
>> 
>> 
>> 
>> On Sun, Jul 13, 2014 at 1:25 PM, Christian MICHON <[email protected]> wrote:
>> Moving from jruby to nodejs? Therubyrhino gem?
>> 
>> Could you please then explain your architecture? It's extremely unclear from your 2 emails.
>> 
>> On 1st email I can see you allocated only 500Mb to your jruby job. I would advise for 1.5Gb if you're stuck on 32 bits, 2Gb and above if you're on 64 bits.
>> 
>> On Jul 13, 2014 11:51 PM, "TJG" <[email protected]> wrote:
>> Resolved this by installing node.js on the server, and dropping therubyrhino gem. 
>> 
>> Asset precompilation worked nicely, with no JVM segmentation faults. 
>> 
>> And, on y development machine, asset precompilation dropped from 2 hours to 7 minutes. 
>> 
>> T
>> 
>> 
>> 
>> On Tue, Jul 8, 2014 at 10:50 PM, TJG <[email protected]> wrote:
>> Environment:
>> 
>> Ubuntu 12.04 LTS
>> JRuby 1.7.13
>> JRE 7.0_60-b19
>> Rails 3.2.12 application
>> 
>> Hi all;
>> 
>> Does anyone recognize this problem or can anyone suggest what I might try to figure out what's gone wrong? 
>> 
>> $ jruby -S rake assets:precompile:all RAILS_ENV=staging RAILS_GROUPS=assets
>> 
>> Starts off okay...
>> 
>> Compiled jquery-plugins/jquery.blockUI.js  (2ms)  (pid 29552)
>> Compiled jquery-plugins/jquery.cookie.js  (2ms)  (pid 29552)
>> Compiled jquery-plugins/jquery.form.js  (13ms)  (pid 29552)
>> Compiled jquery-plugins/jquery.safeEnter.js  (0ms)  (pid 29552)
>> Compiled ckeditor/basepath.js  (16ms)  (pid 29552)
>> Compiled ckeditor/ckeditor.js  (7ms)  (pid 29552)
>> Compiled ckeditor/jquery.js  (0ms)  (pid 29552)
>> Compiled ckeditor-jquery.js  (118ms)  (pid 29552)
>> Compiled application.js  (1346ms)  (pid 29552)
>> Compiled admin.js  (1389ms)  (pid 29552)
>> 
>> Then... boom:
>> 
>> #
>> # A fatal error has been detected by the Java Runtime Environment:
>> #
>> #  SIGSEGV (0xb) at pc=0x00007f32b205cff1, pid=29552, tid=139855679133440
>> #
>> # JRE version: Java(TM) SE Runtime Environment (7.0_60-b19) (build 1.7.0_60-b19)
>> # Java VM: Java HotSpot(TM) 64-Bit Server VM (24.60-b09 mixed mode linux-amd64 compressed oops)
>> # Problematic frame:
>> # V  [libjvm.so+0x5c2ff1]  oopDesc::size_given_klass(Klass*)+0x1
>> #
>> # Failed to write core dump. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again
>> 
>> 
>> [ From error dump ]:
>> VM Arguments:
>> jvm_args: -Xmx500m -Xss2048k -Djffi.boot.library.path=/home/sshadmin/.rvm/rubies/jruby-1.7.13/lib/jni -Xbootclasspath/a:/home/sshadmin/.rvm/rubies/jruby-1.7.13/lib/jruby.jar -Djruby.home=/home/sshadmin/.rvm/rubies/jruby-1.7.13 -Djruby.lib=/home/sshadmin/.rvm/rubies/jruby-1.7.13/lib -Djruby.script=jruby -Djruby.shell=/bin/sh
>> java_command: org.jruby.Main -S rake assets:precompile:all RAILS_ENV=staging RAILS_GROUPS=assets
>> Launcher Type: SUN_STANDARD
>> 
>> Environment Variables:
>> JAVA_HOME=/usr/lib/jvm/jdk1.7.0_60
>> PATH=/webapps/polar/shared/bundle/jruby/1.9/bin:/home/sshadmin/.rvm/gems/jruby-1.7.13/bin:/home/sshadmin/.rvm/gems/jruby-1.7.13@global/bin:/home/sshadmin/.rvm/rubies/jruby-1.7.13/bin:/home/sshadmin/.rvm/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/imagemagick-6.7.2/bin:/usr/lib/postgresql/9.1/bin:/usr/lib/jvm/jdk1.7.0_60/bin
>> LD_LIBRARY_PATH=/usr/local/imagemagick-6.7.2/lib:/usr/local/imagemagick-6.7.2/lib:/usr/local/imagemagick-6.7.2/lib
>> SHELL=/bin/bash
>> 
>> 
>> Many thanks,
>> Tim
>> 
>> 
>> 
>