Add memory dump capabilities in all environments

Gemfile

@@ -99,8 +99,9 @@ group :test do
   gem 'mock_redis'
 end
 
+# Profiling
+gem 'rbtrace',                 '0.4.8'
 group :test, :development do
-  gem 'rbtrace',               '0.4.8'
   gem 'gc_tracer',             '1.5.1'
   gem 'memory_profiler'
 end

config/initializers/memory_profiling.rb

@@ -20,3 +20,20 @@ if ENV['MEMORY_REPORTING']
   require 'rbtrace'
   require 'memory_profiler'
 end
+
+module CartoDB
+  def self.memory_dump(filename)
+    # Dump classes (id -> name)
+    cls = ObjectSpace.each_object.inject(Hash.new 0) { |h, o| h[o.class.object_id] = o.class.name; h }
+    File.open(filename + '.classes', 'w') do |f|
+      JSON.dump(cls, f)
+    end
+
+    GC.start
+
+    # Dump objects
+    File.open(filename + '.dump', 'w') do |f|
+      ObjectSpace.dump_all(output: f)
+    end
+  end
+end