Benchmark big write

gistfile1.rb

# redmine.ruby-lang.org issue #2742
require 'benchmark'

begin
  require 'rbconfig'

  puts "(#{RbConfig::CONFIG['host_os']}) #{RUBY_VERSION}-p#{RUBY_PATCHLEVEL} \
#{RbConfig::CONFIG['CC']} #{RbConfig::CONFIG['optflags']} #{RbConfig::CONFIG['debugflags']}"
rescue LoadError
end

CHR_COUNT, LINE_DELIM = if ARGV[0] && ARGV[0] == 'lf'
                          [ 79, "\n" ]
                        else
                          [ 78, "\r\n" ]
                        end

Benchmark.bm(9) do |x|
  x.report("big_write") do
    File.open("big_foo.txt", 'wb') do |f|
      625_000.times { f.write('-' * CHR_COUNT << LINE_DELIM) }
    end
  end
end