Wide-Area Traffic: The Failure of Poisson Modeling Export

@article{citeulike:5933052, abstract = {Network arrivals are often modeled as Poisson processes for analytic simplicity, even though a number of traffic studies have shown that packet interarrivals are not exponentially distributed. We evaluate 24 wide-area traces, investigating a number of wide-area TCP arrival processes (session and connection arrivals, FTP data connection arrivals within FTP sessions, and TELNET packet arrivals) to determine the error introduced by modeling them using Poisson processes. We find that user-initiated TCP session arrivals, such as remote-login and file-transfer, are well-modeled as Poisson processes with fixed hourly rates, but that other connection arrivals deviate considerably from Poisson; that modeling TELNET packet interarrivals as exponential grievously underestimates the burstiness of TELNET traffic, but using the empirical Tcplib [Danzig et al, 1992] interarrivals preserves burstiness over many time scales; and that FTP data connection arrivals within FTP sessions come bunched into \&\#034;c...}, author = {Paxson, Vern and Floyd, Sally}, citeulike-article-id = {5933052}, citeulike-linkout-0 = {http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.31.61}, journal = {IEEE/ACM Transactions on Networking}, keywords = {area, failure, network, poisson, poisson-process, process, traffic, wan, wide, wide-area}, pages = {226--244}, posted-at = {2009-10-18 08:54:19}, priority = {2}, title = {Wide-Area Traffic: The Failure of Poisson Modeling}, url = {http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.31.61}, volume = {3}, year = {1995} }

TY - JOUR ID - citeulike:5933052 L3 - citeulike-article-id:5933052 N2 - Network arrivals are often modeled as Poisson processes for analytic simplicity, even though a number of traffic studies have shown that packet interarrivals are not exponentially distributed. We evaluate 24 wide-area traces, investigating a number of wide-area TCP arrival processes (session and connection arrivals, FTP data connection arrivals within FTP sessions, and TELNET packet arrivals) to determine the error introduced by modeling them using Poisson processes. We find that user-initiated TCP session arrivals, such as remote-login and file-transfer, are well-modeled as Poisson processes with fixed hourly rates, but that other connection arrivals deviate considerably from Poisson; that modeling TELNET packet interarrivals as exponential grievously underestimates the burstiness of TELNET traffic, but using the empirical Tcplib [Danzig et al, 1992] interarrivals preserves burstiness over many time scales; and that FTP data connection arrivals within FTP sessions come bunched into "c... JF - IEEE/ACM Transactions on Networking EP - 244 TI - Wide-Area Traffic: The Failure of Poisson Modeling VL - 3 SP - 226 KW - area KW - failure KW - network KW - poisson KW - poisson-process KW - process KW - traffic KW - wan KW - wide KW - wide-area AU - Paxson, Vern AU - Floyd, Sally PY - 1995/// UR - http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.31.61 ER -