Richard Clayton rclayton-the-terrible

This all applies to Ruby 2.1. In some cases a setting is not available in 2.0, this is noted. There is also a different with 1.9, 1.8, and REE --- these are not noted.

All the relevant code is in https://github.com/ruby/ruby/blob/master/gc.c

RUBY_HEAP_MIN_SLOTS

default: 10000

The number of heap slots to start out with. This should be set high enough so that your app has enough or almost enough memory after loading so that it doesn't have to allocate more memory on the first request (althogh this probably isn't such a big deal for most apps).

(todo: figure out how big a slot is. i think the answer can be infered from this code.)

logstash json format

{
  "message"    => "hello world",
  "@version"   => "1",
  "@timestamp" => "2014-04-22T23:03:14.111Z",
  "type"       => "stdin",
  "host"       => "hello.local"
}

	class Stopwatch

	def initialize()
	@start = Time.now
	end

	def elapsed_time
	now = Time.now
	elapsed = now - @start
	puts 'Started: ' + @start.to_s

	# Make sure you have Mercurial and Git installed

	git clone https://github.com/rabbitmq/rabbitmq-public-umbrella.git

	cd rabbitmq-public-umbrella
	make co
	cd rabbitmq-web-stomp
	git clone https://github.com/jshiell/rabbitmq-web-stomp.git
	make
	cd dist

	#!/bin/bash
	# SSH into an EC2 instance by name
	# Author: [email protected] (SoThree.com).

	set -e
	if [ $# -lt 1 ]
	then
	echo "Usage: `basename $0` instance_name"
	exit 1
	fi