In this paper we present a rigorous technique for estimating confidence intervals of packet loss measurements. Our approach is motivated by simple observations that the loss process can be modelled as an alternating r...
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ISBN:
(纸本)9781450302111
In this paper we present a rigorous technique for estimating confidence intervals of packet loss measurements. Our approach is motivated by simple observations that the loss process can be modelled as an alternating renewal process. We use this structure to build a Hidden Semi-Markov Model (HSMM) for the measurement process, and from this estimate both loss rates, and their confidence intervals. We use both simulations and a set of more than 18000 hours of real Internet measurements (between dedicated measurement hosts, Planet Lab hosts, web and DNS servers) to cross-validate our estimates, and show that they are significantly more accurate than any current alternative.
This paper describes our implementation of and initial experiences with DipZoom (for "Deep Internet Performance Zoom"), a novel approach to provide focused, on-demand Internet measurements. Unlike existing a...
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ISBN:
(纸本)1595936394
This paper describes our implementation of and initial experiences with DipZoom (for "Deep Internet Performance Zoom"), a novel approach to provide focused, on-demand Internet measurements. Unlike existing approaches that face a difficult challenge of building a measurement platform with sufficiently diverse measurements and measuring hosts, DipZoom implements a matchmaking service instead, using P2P concepts to bring together experimenters in need of measurements with external measurement providers. DipZoom offers the following two main contributions. First, since it is just a facilitator for an open community of participants, it promises unprecedented availability of diverse measurements and measuring points. Second, by offering programmatic access to the entire platform from the experimenter's local computer, DipZoom simplifies staging and execution of complex measurement experiments and lowers the bar for obtaining high-quality measurements.
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