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In this paper we propose, implement and evaluate OpenSample: a low-latency, sampling-based network measurement platform targeted at building faster control loops for software-defined networks. OpenSample leverages sFlow packet sampling to provide near-real-time measurements of both network load and individual flows. While OpenSample is useful in any context, it is particularly useful in an SDN environment where a network controller can quickly take action based on the data it provides. Usingdoi:10.1109/icdcs.2014.31 dblp:conf/icdcs/SuhKDFC14 fatcat:kpzs6zypxnb7rddatjg72q2o6y