80 Networking and Online Games: Understanding and Engineering
Network Latency, Jitter and Loss Average jitter per map versus average latency per map Jitter (ms) 80 70 60 50 40 30 20 10 0 0 100 200 300 400 500 600 700 Latency (ms) Figure 5.5 Jitter versus latency measured from an active Quake III Arena server in Australia [ARM2004] paths where delay accumulates from many router and link hops also places more likely to contribute to jitter. References [ARM2000] G. Armitage, Quality of Service in IP Networks: Foundations for a Multi-Service Internet , Macmillan Technical Publishing, April 2000. [ARM2004] G. Armitage, L. Stewart, Limitations of using Real-World, Public Servers to Estimate Jitter Tolerance of First Person Shooter Games , ACM SIGCHI ACE2004 Conference, Singapore, June 2004. [DOCSIS] CableLabs, Data-Over-Cable Service Interface Specifications Radio Frequency Interface Specification SP-RFIv1.1-I01-990311 , 1999. [I311] ITU-T Recommendation I.311, B-ISDN General Network Aspects , August 1996. [NGUYEN04] T.T.T. Nguyen, G. Armitage, Quantitative Assessment of IP Service Quality in 802.11b Networks and DOCSIS networks , Australian Telecommunications Networks & Applications Conference 2004, (ATNAC2004), Sydney, Australia, December 8 10, 2004. [RFC792] J. Postel, Internet Control Message Protocol , STD 0005, RFC 792. September 1981. [RFC1661] W. Simpson Ed, The Point-to-Point Protocol (PPP) , STD 51, RFC 1661. July 1994. [RFC1662] W. Simpson Ed, PPP in HDLC-like Framing , STD 51, RFC 1662, July 1994. [RFC2474] K. Nichols, S. Blake, F. Baker, D. Black. Definition of the Differentiated Services Field (DS Field) in the IPv4 and IPv6 Headers. RFC 2474. December 1998. [RFC2475] S. Blake, D. Black, M. Carlson, E. Davies, Z. Wang, W. Weiss. An Architecture for Differentiated Services. RFC 2475. December 1998.
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