CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic
-
Upload
wei-tsang-ooi -
Category
Technology
-
view
503 -
download
0
Transcript of CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic
![Page 1: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/1.jpg)
Lecture 9Characteristics of Networked Game
Traffic
22 March 2010
1
![Page 2: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/2.jpg)
WebFile TransferBitTorrentSkype Calls
2
![Page 3: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/3.jpg)
Understanding network traffic is crucial to traffic engineering
and protocol design
3
![Page 4: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/4.jpg)
What are the characteristic of traffic generated by games?
4
![Page 5: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/5.jpg)
data rate packet size
UDP or TCPpattern
5
![Page 6: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/6.jpg)
Differences betweenRTSFPSRPG
?
6
![Page 7: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/7.jpg)
Counter Strike
7
![Page 8: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/8.jpg)
20,000servers
as of May 2002
8
![Page 9: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/9.jpg)
3rdlargest source of UDP packets(behind DNS and RealAudio)
9
![Page 10: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/10.jpg)
Centralized Architecture
10
![Page 11: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/11.jpg)
32players supported
11
![Page 12: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/12.jpg)
3minutes per round
12
![Page 13: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/13.jpg)
30minutes per map
13
![Page 14: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/14.jpg)
Traffic includes
state updatestext messages
voice:
14
![Page 15: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/15.jpg)
How to collect packet traces?
15
![Page 16: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/16.jpg)
Run own Counter Strike’s server
16
![Page 17: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/17.jpg)
Collect packets over one week
17
![Page 18: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/18.jpg)
5886different clients
18
![Page 19: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/19.jpg)
500million packets analyzed
19
![Page 20: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/20.jpg)
500million packets analyzed
20
![Page 21: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/21.jpg)
21
![Page 22: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/22.jpg)
22
![Page 23: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/23.jpg)
542 kbps
mean out-going bandwidth
341 kbps
mean in-coming bandwidth
23
![Page 24: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/24.jpg)
24
![Page 25: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/25.jpg)
25
![Page 26: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/26.jpg)
26
![Page 27: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/27.jpg)
27
![Page 28: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/28.jpg)
28
![Page 29: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/29.jpg)
50 msperiodic broadcast from server
29
![Page 30: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/30.jpg)
30
![Page 31: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/31.jpg)
31
![Page 32: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/32.jpg)
80.3average packet size in bytes
32
![Page 33: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/33.jpg)
39.72average in-
coming packet size in bytes
129.51average out-going packet size in bytes
33
![Page 34: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/34.jpg)
34
![Page 35: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/35.jpg)
small packets(< 50 bytes)
35
![Page 36: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/36.jpg)
periodic
36
![Page 37: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/37.jpg)
predictable
37
![Page 38: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/38.jpg)
Shen Zhou Online
38
![Page 39: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/39.jpg)
39
![Page 40: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/40.jpg)
20hours of traces
40
![Page 41: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/41.jpg)
112,369connections
41
![Page 42: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/42.jpg)
58terra bytes of data
42
![Page 43: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/43.jpg)
43
![Page 44: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/44.jpg)
36%of packets are
23bytes
52%of packets are
27bytes
44
![Page 45: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/45.jpg)
45
![Page 46: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/46.jpg)
46
![Page 47: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/47.jpg)
7kbps of bandwidth on average
47
![Page 48: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/48.jpg)
48
![Page 49: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/49.jpg)
49
![Page 50: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/50.jpg)
200 msperiodic broadcast from server
50
![Page 51: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/51.jpg)
51
![Page 52: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/52.jpg)
52
![Page 53: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/53.jpg)
53
![Page 54: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/54.jpg)
“flash crowd” effects
54
![Page 55: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/55.jpg)
even smaller packets
55
![Page 56: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/56.jpg)
small bandwidth
56
![Page 57: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/57.jpg)
periodic
57
![Page 58: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/58.jpg)
predictable
58
![Page 59: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/59.jpg)
temporal locality
59
![Page 60: CS4344 09/10 Lecture 9: Characteristics of Networked Game Traffic](https://reader033.fdocuments.us/reader033/viewer/2022060111/5562eed0d8b42ab47d8b5276/html5/thumbnails/60.jpg)
spatial locality
60