Benchmarking Fluent::Timezone.utc_offset

gistfile1.txt

Rehearsal ----------------------------------------------------------
Asia/Tokyo               0.546691   0.111622   0.658313 (  0.659132)
US/Pacific summer time   0.624673   0.144011   0.768684 (  0.768710)
US/Pacific               0.628339   0.144027   0.772366 (  0.772654)
------------------------------------------------- total: 2.199363sec

                             user     system      total        real
Asia/Tokyo               0.526534   0.107934   0.634468 (  0.634722)
US/Pacific summer time   0.561836   0.183536   0.745372 (  0.745895)
US/Pacific               0.624210   0.124091   0.748301 (  0.748303)

tz-offset.rb

require "benchmark"
require_relative "./lib/fluent/load"
require "time"

N = 100_000

Benchmark.bmbm do |x|
  x.report("Asia/Tokyo") do
    time = Time.parse("2018-03-11 02:00:00 Asia/Tokyo")
    N.times do
      Fluent::Timezone.utc_offset(time, "Asia/Tokyo")
    end
  end
  x.report("US/Pacific summer time") do
    time = Time.parse("2018-03-12 02:00:00 US/Pacific")
    N.times do
      Fluent::Timezone.utc_offset(time, "US/Pacific")
    end
  end
  x.report("US/Pacific") do
    time = Time.parse("2018-03-11 02:00:00 US/Pacific")
    N.times do
      Fluent::Timezone.utc_offset(time, "US/Pacific")
    end
  end
end