time each capistrano task.rb

TIMINGS = Hash.new(0)

module Capistrano::Configuration::Execution
  def execute_task_with_timing(task)
    start = Time.now
    execute_task_without_timing(task)
  ensure
    TIMINGS[task.fully_qualified_name] += Time.now - start
  end

  alias execute_task_without_timing execute_task
  alias execute_task execute_task_with_timing
end

task :timings do
  TIMINGS.sort { |a, b| b.last <=> a.last }.each do |task_name, time|
    puts "%8.2f %s" % [time, task_name]
  end
end