Public Review for Internet and the Erlang Formula Thomas Bonald and James Roberts Should old equations be forgot, and never brought to mind? That is the question, inspired from a famous song, that is asked by six year old Colin to his father, Mark Crovella. That is also the question that welcomes you to Mark s webpage. Let s face it: although we theoretically should not, we do forget old equations. Sometimes we decide to forget them because they are simplistic and reflect a naive vision of our world, one that we have abandoned. Sometimes they simply go out of fashion. Sometimes, they are simply too complex to remember or to use in practice. The now 102 year old formula describing the probability that a customer is lost (or delayed) in a system with multiple servers, discovered by A.K. Erlang, is not the kind of equations that are forgotten. It may be the first one you learn with elementary mathematics and, surprisingly, still the one you can use in a today s networks. Primarily, this is because it is simple and it has been shown to be insensitive to traffic characteristics. That means you can use
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Internet and the Erlang formula
Bonald, Thomas; Roberts, James W.
Follow ACM SIGCOMM Computer Communication Review
, Volume 42 (1)
Association for Computing Machinery – Jan 16, 2012
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