wnuqui

# JAVA_OPTS and Procfiles

JAVA_OPTS: -Djruby.memory.max=384m -Xmx384m -Xms256m -Xss512k -XX:+UseCompressedOops -XX:+PrintGCDetails


# puma backed app's Procfile
web: bundle exec rails server puma -p $PORT -e $RACK_ENV

# torquebox-lite backed app's Procfile
web: bin/torquebox-lite -b 0.0.0.0 -p $PORT --max-threads=8

madsheep

class KittenMailer < ActionMailer::Base

  def mail *args
    attachments['cat.jpeg'] =  open("http://placekitten.com/#{rand(300)+300}/#{rand(300)+300}").read
    super
  end
  
end

headius

require 'ffi'

module Crypt
  extend FFI::Library
  ffi_lib 'c'

  attach_function :crypt, [:string, :string], :string
end

p Crypt.crypt 'this is a string', 'this is the salt'

steida

/*
*   Sugar for type detection working across frames and browsers ;)
*
*   Detected types
*
*       'arguments', 'array', 'boolean', 'date', 'document', 'element', 'error', 'fragment', 
*       'function', 'nodelist', 'null', 'number', 'object', 'regexp', 'string', 'textnode', 
*       'undefined', 'window'
*
*   Copyright (c) 2009 Daniel Steigerwald (http://daniel.steigerwald.cz), Mit Style License

rwjblue

#Overview drip is an awesome command line tool that can be used to dramatically lower perceived JVM startup time. It does this by preloading an entirely new JVM process\instance and allowing you to simply use the preloaded environment. This has extraordinary results with jruby.

We reduced time to run rake environment from 13 seconds to a mere 3.5 seconds. This is actually at or near MRI 1.9.3p327 (with falcon patch) speeds!

Adding a few addition jruby options will reduce startup time even further (down to 1.69 seconds).

#Install Drip Install drip if you haven't already (see https://github.com/flatland/drip)

bbrowning

source 'https://rubygems.org'

gem 'multi_json'

headius

require 'java'
require 'jruby'

thread_bean = java.lang.management.ManagementFactory.thread_mx_bean

t1 = Thread.new do
  a = nil
  loop do
    a = 'foo'
  end

headius

diff --git a/core/src/main/java/org/jruby/RubyArray.java b/core/src/main/java/org/jruby/RubyArray.java
index 04fbeef..1c32bb39 100644
--- a/core/src/main/java/org/jruby/RubyArray.java
+++ b/core/src/main/java/org/jruby/RubyArray.java
@@ -71,6 +71,7 @@ import org.jruby.util.io.EncodingUtils;
 
 import java.io.IOException;
 import java.lang.reflect.Array;
+import java.lang.reflect.Field;
 import java.util.Arrays;

nicksieger

# Monkeypatch to disable connection pooling in ActiveRecord
module ActiveRecord
  module ConnectionAdapters
    class ConnectionPool
      def checkout
        c = ActiveRecord::Base.send(spec.adapter_method, spec.config.dup)
        c.verify!
        c
      end

headius

~/projects/graal-core $ jruby -v mandelbrot.rb 
jruby 9.1.8.0-SNAPSHOT (2.3.1) 2017-01-25 2b97d78 Java HotSpot(TM) 64-Bit Server VM 9-ea+152 on 9-ea+152 +indy +jit [linux-x86_64]
1.4988730000000001
0.875144
0.6610520000000001
0.666915
0.67083
0.658069
0.6749970000000001
0.667617