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task :benchmark do
require 'benchmark'
$LOAD_PATH.unshift File.expand_path('../..', __FILE__)
require 'lib/uuidtools'
def format_float(float)
("%.2f" % float).rjust(9, ' ')
end
def format_result(result, action, iterations)
$stdout.puts "#{format_float(iterations / result.real)} | #{action}"
end
def benchmark(name, n = 10000)
result = Benchmark.measure do
n.times { yield }
end
format_result(result, name, n)
end
$stdout.puts ' x/second | Benchmark'
$stdout.puts '---------- -----------'
##
# Benchmark UUID creation
namespace = UUIDTools::UUID_URL_NAMESPACE
url = "http://www.ietf.org/rfc/rfc4122.txt"
benchmark('Version 1') { UUIDTools::UUID.timestamp_create.to_s }
benchmark('Version 3') { UUIDTools::UUID.md5_create(namespace, url).to_s }
benchmark('Version 4') { UUIDTools::UUID.random_create.to_s }
benchmark('Version 5') { UUIDTools::UUID.sha1_create(namespace, url).to_s }
##
# Benchmark UUID parsing
uuid_s = UUIDTools::UUID.random_create.to_s
benchmark('UUID::parse', 40000) { UUIDTools::UUID.parse(uuid_s) }
uuid_raw = UUIDTools::UUID.random_create.raw
benchmark('UUID::parse_raw', 40000) { UUIDTools::UUID.parse_raw(uuid_raw) }
uuid_i = UUIDTools::UUID.random_create.to_i
benchmark('UUID::parse_int', 40000) { UUIDTools::UUID.parse_int(uuid_i) }
uuid_hex = UUIDTools::UUID.random_create.hexdigest
benchmark('UUID::parse_hexdigest', 40000) { UUIDTools::UUID.parse_hexdigest(uuid_hex) }
##
# Benchmark UUID private api
byte_string = UUIDTools::UUID.timestamp_create.raw
benchmark('UUID::convert_byte_string_to_int') { UUIDTools::UUID.convert_byte_string_to_int(byte_string) }
bigint = UUIDTools::UUID.timestamp_create.to_i
benchmark('UUID::convert_int_to_byte_string') { UUIDTools::UUID.convert_int_to_byte_string(bigint, 16) }
end
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