my_service.rb

require 'my_namespace/timer'

module MyNamespace
  class MyService

    include MyNamespace::Timer

    def service_name
      'the_service_name'
    end

    def my_method(options = {})
      result = run_with_timer('my_method') do
        # some processing to be benchmarked
      end
    end
  end
end

timer.rb

module MyNamespace
    module Timer

      def run_with_timer(method = nil, &block)
        require "benchmark"

        result = nil
        time = Benchmark.realtime do
          result = yield
        end

        # bm = Benchmark
        # ws = WebServices
        # rt = Response times
        key  = "bm:ws:rt"
        key += ":#{self.service_name}"
        key += ":#{method}" if method.present?

        args = [key, Time.now.utc.to_i, time.round(3)]

        begin
          $redis.zadd *args
        rescue => ex
          msg = "#{ex.class.name}: #{ex.message} (#{__FILE__}:#{__LINE__})"
          AUDIT_LOG.error msg
        end

        result
      end

    end
end