ベンチマークをとる
code:ruby
require 'benchmark'
n = 50000
# これは
# Benchmark.bm(7, ">total:", ">avg:") do |x| ... end
# と同じ
Benchmark.benchmark(" "*7 + Benchmark::CAPTION,
7,
Benchmark::FORMAT,
">total:",
">avg:") do |x|
tf = x.report("for:") { for i in 1..n; a = "1"; end }
tt = x.report("times:") { n.times do ; a = "1"; end }
tu = x.report("upto:") { 1.upto(n) do ; a = "1"; end }
end
#
# user system total real
# for: 1.016667 0.016667 1.033333 ( 0.485749)
# times: 1.450000 0.016667 1.466667 ( 0.681367)
# upto: 1.533333 0.000000 1.533333 ( 0.722166)
# >total: 4.000000 0.033333 4.033333 ( 1.889282)
# >avg: 1.333333 0.011111 1.344444 ( 0.629761)