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measure.py
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measure.py
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#!/usr/bin/python
import base64
import random
import sys
from compressor.http2 import Processor
class Frame:
def __init__(self, opcode, fin, rsv1, rsv2, rsv3, length):
self.opcode = opcode
self.fin = fin
self.rsv1 = rsv1
self.rsv2 = rsv2
self.rsv3 = rsv3
self.length = length
CONTINUATION = 0
TEXT = 1
BINARY = 2
CLOSE = 8
def headers1(self):
o = {}
o[':opcode'] = str(self.opcode)
o[':fin'] = '1' if self.fin else '0'
rsv = ''
rsv += ('1' if self.rsv1 else '0')
rsv += (',1' if self.rsv2 else ',0')
rsv += (',1' if self.rsv3 else ',0')
if rsv != '0,0,0':
o[':rsv'] = rsv
o[':length'] = str(self.length)
return o
def headers2(self):
o = {}
if self.opcode != 0:
o[':opcode'] = str(self.opcode)
if self.fin:
o[':fin'] = '1'
if self.rsv1:
o[':rsv1'] = '1'
if self.rsv2:
o[':rsv2'] = '1'
if self.rsv3:
o[':rsv3'] = '1'
o[':length'] = str(self.length)
return o
def headers3(self):
o = {}
if self.opcode != 0:
o[':opcode'] = str(self.opcode)
if self.fin:
o[':fin'] = '1'
if self.rsv1 or self.rsv2 or self.rsv3:
rsv = 0
if self.rsv1:
rsv += 4
if self.rsv2:
rsv += 2
if self.rsv3:
rsv += 1
o[':rsv'] = str(rsv)
o[':length'] = str(self.length)
return o
def headers4(self):
o = {}
if self.opcode != 0:
o[':opcode'] = str(self.opcode)
if self.fin:
o[':fin'] = '1'
if self.rsv1:
o[':rsv1'] = '1'
if self.rsv2:
o[':rsv2'] = '1'
if self.rsv3:
o[':rsv3'] = '1'
o[':length'] = '{0:x}'.format(self.length)
return o
def headers5(self):
o = {}
if self.opcode != 0:
o[':opcode'] = str(self.opcode)
if self.fin:
o[':fin'] = '1'
if self.rsv1:
o[':rsv1'] = '1'
if self.rsv2:
o[':rsv2'] = '1'
if self.rsv3:
o[':rsv3'] = '1'
return o
def measure_for_frames(description, frames):
print('{0}: len(frames) = {1}'.format(description, len(frames)))
p1 = Processor({}, True, {})
p2 = Processor({}, True, {})
p3 = Processor({}, True, {})
p4 = Processor({}, True, {})
p5 = Processor({}, True, {})
bytes1 = b''.join([p1.compress(f.headers1(), '') for f in frames])
bytes2 = b''.join([p2.compress(f.headers2(), '') for f in frames])
bytes3 = b''.join([p3.compress(f.headers3(), '') for f in frames])
bytes4 = b''.join([p4.compress(f.headers4(), '') for f in frames])
bytes5 = b''.join([p5.compress(f.headers5(), '') for f in frames])
print('1: As specified in SPDY4 spec draft')
print(' len(bytes) = {0}, average = {1}'.format(
len(bytes1), len(bytes1) * 1.0 / len(frames)))
print('2: Omit headers when its value is zero')
print(' len(bytes) = {0}, average = {1}'.format(
len(bytes2), len(bytes2) * 1.0 / len(frames)))
print('3: 2 + assemble rsv headers')
print(' len(bytes) = {0}, average = {1}'.format(
len(bytes3), len(bytes3) * 1.0 / len(frames)))
print('4: 2 + hexadecimal length representation')
print(' len(bytes) = {0}, average = {1}'.format(
len(bytes4), len(bytes4) * 1.0 / len(frames)))
print('5: 2 + omit :length header')
print(' len(bytes) = {0}, average = {1}'.format(
len(bytes5), len(bytes5) * 1.0 / len(frames)))
frames = [
Frame(Frame.TEXT, False, False, False, False, 1423),
Frame(Frame.CONTINUATION, False, False, False, False, 123),
Frame(Frame.CONTINUATION, False, False, False, False, 4123),
Frame(Frame.CONTINUATION, False, False, False, False, 99),
Frame(Frame.CONTINUATION, True, False, False, False, 0),
Frame(Frame.TEXT, False, False, False, False, 133),
Frame(Frame.CONTINUATION, False, False, False, False, 1),
Frame(Frame.CONTINUATION, False, False, False, False, 1623),
Frame(Frame.CONTINUATION, True, False, False, False, 588),
Frame(Frame.TEXT, False, False, False, False, 9145),
Frame(Frame.CONTINUATION, False, False, False, False, 76),
Frame(Frame.CONTINUATION, False, False, False, False, 5128),
Frame(Frame.CONTINUATION, False, False, False, False, 5689),
Frame(Frame.CONTINUATION, False, False, False, False, 733),
Frame(Frame.CONTINUATION, True, False, False, False, 42),
Frame(Frame.TEXT, True, False, False, False, 929),
Frame(Frame.TEXT, True, False, False, False, 1534),
Frame(Frame.TEXT, True, False, False, False, 81),
Frame(Frame.TEXT, False, False, False, False, 145),
Frame(Frame.CONTINUATION, False, False, False, False, 1476),
Frame(Frame.CONTINUATION, False, False, False, False, 814),
Frame(Frame.CONTINUATION, False, False, False, False, 27),
Frame(Frame.CONTINUATION, True, False, False, False, 439),
Frame(Frame.BINARY, False, False, False, False, 15),
Frame(Frame.CONTINUATION, False, False, False, False, 1376),
Frame(Frame.CONTINUATION, False, False, False, False, 714),
Frame(Frame.CONTINUATION, False, False, False, False, 17),
Frame(Frame.CONTINUATION, True, False, False, False, 339),
Frame(Frame.TEXT, False, False, False, False, 115),
Frame(Frame.CONTINUATION, False, False, False, False, 11376),
Frame(Frame.CONTINUATION, False, False, False, False, 7114),
Frame(Frame.CONTINUATION, False, False, False, False, 117),
Frame(Frame.CONTINUATION, True, False, False, False, 3139),
Frame(Frame.TEXT, False, False, False, False, 1424),
Frame(Frame.CONTINUATION, False, False, False, False, 124),
Frame(Frame.CONTINUATION, False, False, False, False, 4124),
Frame(Frame.CONTINUATION, False, False, False, False, 90),
Frame(Frame.CONTINUATION, True, False, False, False, 1),
Frame(Frame.TEXT, False, False, False, False, 134),
Frame(Frame.CONTINUATION, False, False, False, False, 2),
Frame(Frame.CONTINUATION, False, False, False, False, 1624),
Frame(Frame.CONTINUATION, True, False, False, False, 589),
Frame(Frame.TEXT, False, False, False, False, 9146),
Frame(Frame.CONTINUATION, False, False, False, False, 77),
Frame(Frame.CONTINUATION, False, False, False, False, 5129),
Frame(Frame.CONTINUATION, False, False, False, False, 5680),
Frame(Frame.CONTINUATION, False, False, False, False, 734),
Frame(Frame.CONTINUATION, True, False, False, False, 43),
Frame(Frame.BINARY, True, False, False, False, 920),
Frame(Frame.BINARY, True, False, False, False, 1535),
Frame(Frame.TEXT, True, False, False, False, 82),
Frame(Frame.TEXT, False, False, False, False, 146),
Frame(Frame.CONTINUATION, False, False, False, False, 1477),
Frame(Frame.CONTINUATION, False, False, False, False, 815),
Frame(Frame.CONTINUATION, False, False, False, False, 28),
Frame(Frame.CONTINUATION, True, False, False, False, 430),
Frame(Frame.BINARY, False, False, False, False, 16),
Frame(Frame.CONTINUATION, False, False, False, False, 1377),
Frame(Frame.CONTINUATION, False, False, False, False, 715),
Frame(Frame.CONTINUATION, False, False, False, False, 18),
Frame(Frame.CONTINUATION, True, False, False, False, 330),
Frame(Frame.TEXT, False, False, False, False, 116),
Frame(Frame.CONTINUATION, False, False, False, False, 11377),
Frame(Frame.CONTINUATION, False, False, False, False, 7115),
Frame(Frame.CONTINUATION, False, False, False, False, 118),
Frame(Frame.CONTINUATION, True, False, False, False, 3130),
Frame(Frame.TEXT, False, False, False, False, 1433),
Frame(Frame.CONTINUATION, False, False, False, False, 133),
Frame(Frame.CONTINUATION, False, False, False, False, 4133),
Frame(Frame.CONTINUATION, False, False, False, False, 109),
Frame(Frame.CONTINUATION, True, False, False, False, 10),
Frame(Frame.TEXT, False, False, False, False, 143),
Frame(Frame.CONTINUATION, False, False, False, False, 11),
Frame(Frame.CONTINUATION, False, False, False, False, 1633),
Frame(Frame.CONTINUATION, True, False, False, False, 598),
Frame(Frame.TEXT, False, False, False, False, 9155),
Frame(Frame.CONTINUATION, False, False, False, False, 86),
Frame(Frame.CONTINUATION, False, False, False, False, 5138),
Frame(Frame.CONTINUATION, False, False, False, False, 5699),
Frame(Frame.CONTINUATION, False, False, False, False, 743),
Frame(Frame.CONTINUATION, True, False, False, False, 52),
Frame(Frame.TEXT, True, False, False, False, 939),
Frame(Frame.TEXT, True, False, False, False, 1544),
Frame(Frame.TEXT, True, False, False, False, 91),
Frame(Frame.TEXT, False, False, False, False, 155),
Frame(Frame.CONTINUATION, False, False, False, False, 1486),
Frame(Frame.CONTINUATION, False, False, False, False, 824),
Frame(Frame.CONTINUATION, False, False, False, False, 37),
Frame(Frame.CONTINUATION, True, False, False, False, 449),
Frame(Frame.BINARY, False, False, False, False, 25),
Frame(Frame.CONTINUATION, False, False, False, False, 1386),
Frame(Frame.CONTINUATION, False, False, False, False, 724),
Frame(Frame.CONTINUATION, False, False, False, False, 27),
Frame(Frame.CONTINUATION, True, False, False, False, 349),
Frame(Frame.TEXT, False, False, False, False, 125),
Frame(Frame.CONTINUATION, False, False, False, False, 11386),
Frame(Frame.CONTINUATION, False, False, False, False, 7124),
Frame(Frame.CONTINUATION, False, False, False, False, 127),
Frame(Frame.CONTINUATION, True, False, False, False, 3149),
Frame(Frame.TEXT, False, False, False, False, 1434),
Frame(Frame.CONTINUATION, False, False, False, False, 134),
Frame(Frame.CONTINUATION, False, False, False, False, 4134),
Frame(Frame.CONTINUATION, False, False, False, False, 100),
Frame(Frame.CONTINUATION, True, False, False, False, 11),
Frame(Frame.TEXT, False, False, False, False, 144),
Frame(Frame.CONTINUATION, False, False, False, False, 12),
Frame(Frame.CONTINUATION, False, False, False, False, 1634),
Frame(Frame.CONTINUATION, True, False, False, False, 599),
Frame(Frame.TEXT, False, False, False, False, 9156),
Frame(Frame.CONTINUATION, False, False, False, False, 87),
Frame(Frame.CONTINUATION, False, False, False, False, 5139),
Frame(Frame.CONTINUATION, False, False, False, False, 5690),
Frame(Frame.CONTINUATION, False, False, False, False, 744),
Frame(Frame.CONTINUATION, True, False, False, False, 53),
Frame(Frame.BINARY, True, False, False, False, 930),
Frame(Frame.BINARY, True, False, False, False, 1545),
Frame(Frame.TEXT, True, False, False, False, 92),
Frame(Frame.TEXT, False, False, False, False, 156),
Frame(Frame.CONTINUATION, False, False, False, False, 1487),
Frame(Frame.CONTINUATION, False, False, False, False, 825),
Frame(Frame.CONTINUATION, False, False, False, False, 38),
Frame(Frame.CONTINUATION, True, False, False, False, 440),
Frame(Frame.BINARY, False, False, False, False, 26),
Frame(Frame.CONTINUATION, False, False, False, False, 1387),
Frame(Frame.CONTINUATION, False, False, False, False, 725),
Frame(Frame.CONTINUATION, False, False, False, False, 28),
Frame(Frame.CONTINUATION, True, False, False, False, 340),
Frame(Frame.TEXT, False, False, False, False, 126),
Frame(Frame.CONTINUATION, False, False, False, False, 11387),
Frame(Frame.CONTINUATION, False, False, False, False, 7125),
Frame(Frame.CONTINUATION, False, False, False, False, 128),
Frame(Frame.CONTINUATION, True, False, False, False, 3140),
Frame(Frame.CONTINUATION, False, False, False, False, 829),
Frame(Frame.CONTINUATION, False, False, False, False, 41),
Frame(Frame.CONTINUATION, True, False, False, False, 2601),
Frame(Frame.BINARY, False, False, False, False, 18),
Frame(Frame.CONTINUATION, False, False, False, False, 1298),
Frame(Frame.CONTINUATION, False, False, False, False, 416),
Frame(Frame.CONTINUATION, False, False, False, False, 21),
Frame(Frame.CONTINUATION, True, False, False, False, 315),
Frame(Frame.TEXT, False, False, False, False, 3892),
Frame(Frame.CONTINUATION, False, False, False, False, 12345),
Frame(Frame.CONTINUATION, False, False, False, False, 7201),
Frame(Frame.CONTINUATION, False, False, False, False, 164),
Frame(Frame.CONTINUATION, True, False, False, False, 3201),
Frame(Frame.TEXT, False, False, False, False, 1507),
Frame(Frame.CONTINUATION, False, False, False, False, 248),
Frame(Frame.CONTINUATION, False, False, False, False, 3982),
Frame(Frame.CONTINUATION, False, False, False, False, 400),
Frame(Frame.CONTINUATION, True, False, False, False, 6),
Frame(Frame.TEXT, False, False, False, False, 2344),
Frame(Frame.CONTINUATION, False, False, False, False, 32),
Frame(Frame.CONTINUATION, False, False, False, False, 218),
Frame(Frame.CONTINUATION, True, False, False, False, 428),
Frame(Frame.TEXT, False, False, False, False, 1392),
Frame(Frame.CONTINUATION, False, False, False, False, 147),
Frame(Frame.CONTINUATION, False, False, False, False, 6822),
Frame(Frame.CONTINUATION, False, False, False, False, 910),
Frame(Frame.CONTINUATION, False, False, False, False, 2677),
Frame(Frame.CONTINUATION, True, False, False, False, 47),
Frame(Frame.BINARY, True, False, False, False, 158),
Frame(Frame.BINARY, True, False, False, False, 2346),
Frame(Frame.TEXT, True, False, False, False, 183),
Frame(Frame.TEXT, False, False, False, False, 228),
Frame(Frame.CONTINUATION, False, False, False, False, 286),
Frame(Frame.CONTINUATION, False, False, False, False, 421),
Frame(Frame.CONTINUATION, False, False, False, False, 1426),
Frame(Frame.CONTINUATION, True, False, False, False, 3201),
Frame(Frame.BINARY, False, False, False, False, 4096),
Frame(Frame.CONTINUATION, False, False, False, False, 821),
Frame(Frame.CONTINUATION, False, False, False, False, 92),
Frame(Frame.CONTINUATION, False, False, False, False, 683),
Frame(Frame.CONTINUATION, True, False, False, False, 518),
Frame(Frame.TEXT, False, False, False, False, 42),
Frame(Frame.CONTINUATION, False, False, False, False, 32000),
Frame(Frame.CONTINUATION, False, False, False, False, 157),
Frame(Frame.CONTINUATION, False, False, False, False, 9209),
Frame(Frame.CONTINUATION, True, False, False, False, 1),
]
random.seed(0)
measure_for_frames('no extension', frames)
print('')
measure_for_frames('with compress(1)', [
Frame(f.opcode,
f.fin,
random.random() < 0.5 and f.opcode != Frame.CONTINUATION,
f.rsv2,
f.rsv3,
f.length) for f in frames])
print('')
measure_for_frames('with compress(2)', [
Frame(f.opcode,
f.fin,
f.opcode != Frame.CONTINUATION,
f.rsv2,
f.rsv3,
f.length) for f in frames])
print('')
measure_for_frames('rsv bits are turned randomly on', [
Frame(f.opcode,
f.fin,
random.random() < 0.2,
random.random() < 0.2,
random.random() < 0.2,
f.length) for f in frames])
print('')