base6VSpack

#              user     system      total        real
# base64:  1.120000   0.030000   1.150000 (  1.187320)
# pack:    0.170000   0.040000   0.210000 (  0.207054)
#

require 'benchmark'
require 'base64'

N = 1000

def base64(file)
  Base64.encode64(File.open(file, 'rb') {|f| f.read }).gsub(/\n/, '')
end

def pack(file)
  [IO.read(file)].pack("m0")
end

def setup
  for i in 1..N ; `dd if=/dev/urandom of=#{i}.dat bs=1k count=40 2>&1 1>/dev/null`; end
end

def teardown
  `rm -f *.dat`
end

setup

Benchmark.bm(7) do |x|
  x.report("base64:") { for i in 1..N; base64("#{i}.dat"); end }
  x.report("pack:")   { for i in 1..N; pack("#{i}.dat");   end }
end

teardown