Nick LaMuro NickLaMuro

This is a adaptation of some of the ObjectSpace.dump_all analyisis scripts found in Sam Saffron's article on "Debugging memory leaks in Ruby":

https://samsaffron.com/archive/2015/03/31/debugging-memory-leaks-in-ruby

The input files are also generated in a similar fashion that is described in the blog post:

io=File.open("/tmp/my_dump", "w")
ObjectSpace.dump_all(output: io);

The following is a way to determine where in the codebase bundler is stalling when fetching from external sources (rubygems.org, github.com, etc.). Use this as a way to determine where in the codebase bundler is stalling when it is happening without stopping the process or requiring modifications to the source directly.

Usage

Download the bundler_trap.rb script and put is somewhere easily accessible (I use the home directory in my examples).
Run bundler using the following command: ruby -I~ -rbundler_trap bin/bundle update
You will have to repeat step to until you get to a situation where bundler has stalled. When it does, send the INFO signal to the process (CMD+t on OSX, and on Linux, it should be kill -sINFO pid, but you might have to use a different signal).

	#!/usr/bin/env ruby
	#
	# gitter-search [--date YYYYMMDD] [--user @USERNAME] ORG/ROOM [PATTERN]
	#

	require 'oga'
	require 'optparse'
	require 'net/http'

	options = {}

	$ bin/rails r tmp/test_git_transaction.rb
	** Using session_store: ActionDispatch::Session::MemCacheStore
	** ManageIQ master, codename: J-release
	starting...
	creating record... done! (id: 21)
	> Process 53627 has started...
	> Process 53628 has started...
	> Process 53629 has started...
	> Process.53628: starting .git_transaction...
	> Process.53629: starting .git_transaction...

	# requires installing "benchmark-ips" (`$ gem install benchmark-ips`)
	#
	# Sample result
	#
	# $ ruby compare_define_method_with_eval.rb
	# Warming up --------------------------------------
	# using_define_method 17.203k i/100ms
	# using_eval 29.526k i/100ms
	# using_module_eval 30.355k i/100ms
	# using_class_eval 30.809k i/100ms

	# Make sure the normal MiqServer is autoloaded before monkey patching it
	MiqServer

	require 'objspace'

	class MiqServer < ApplicationRecord
	alias _old_monitor_poll monitor_poll

	def monitor_poll
	begin

	#
	# This script has been adapted from a similar script by Dave Gynn (@dgynn):
	#
	# - https://gist.github.com/dgynn/bd54e970f8942ce2ca532e4adc3fd30a
	#
	# And the functionality has been heavily modified and made configurable from a
	# script by Daniel Berger (@djberg96)
	#
	# - https://gist.github.com/djberg96/809562e6e7868966a22032935ee6e5e8
	#

	#!/usr/bin/env ruby

	require "optparse"

	options = { :loops => 5 }

	OptionParser.new do \|opts\|
	opts.banner = "usage: #{File.basename $PROGRAM_NAME, '.rb'} [options]"

	opts.on("-D", "--[no-]debug", "Toggle debug mode (includes verbose)") do \|val\|

	{
	"apiVersion": "v1",
	"kind": "ClusterRole",
	"metadata": {
	"name": "hawkular-metrics-admin"
	},
	"rules": [
	{
	"apiGroups": [""],
	"resources": ["hawkular-metrics","hawkular-alerts"],

	#!/usr/bin/env ruby
	#
	# This script has been adapted from a similar script by Dave Gynn (@dgynn):
	#
	# - https://gist.github.com/dgynn/bd54e970f8942ce2ca532e4adc3fd30a
	#
	# This can be run against a local version of ActiveSupport or the latest
	# release for comparison (ideally, you would put this in your `rails/`
	# dir locally and run against local changes from there)
	#