memory profiler

gistfile1.txt

class MemoryEndpoint
  def call(env)
    time_str = Time.now.strftime('%Y-%m-%d_%H-%M-%S')
    File.open("/tmp/dump-#{Process.pid}-#{time_str}.json", 'w') do |file|
      dump_memory(file)
    end
    [200, { 'Content-Type' => 'text/plain' }, ["Dumped Memory #{Process.pid}"]]
  end

  private

  def dump_memory(file)
    require 'objspace'
    #ObjectSpace.trace_object_allocations_start
    GC.start
    ObjectSpace.dump_all(output: file)
  end
end

class TraceEndpoint
  def call(env)
    require 'objspace'
    ObjectSpace.trace_object_allocations_start
    [200, { 'Content-Type' => 'text/plain' }, ["Tracing #{Process.pid}"]]
  end
end

map ENV['RAILS_RELATIVE_URL_ROOT'] || '/' do
  run Foreman::Application
end

map '/dump-memory' do
  run MemoryEndpoint.new
end

map '/trace' do
  run TraceEndpoint.new
end