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- W133715445 abstract "Size-based scheduling is a promising solution to improve the response time of small flows (mice) that have to share bandwidth with large flows (elephants). To do this, one important task is to track the size of the ongoing flows at the router. However, most of the proposed size-based schedulers either employ the trivial way of tracking the size information of all flows, or require changes at end-hosts. Hence, either they are not scalable or they increase complexity. This paper proposes a new way of performing size-based scheduling in a practical and scalable fashion, by identifying and 'de-prioritizing' elephants only at times of high load. We exploit TCP's behaviour by using a mechanism that detects a window of packets -- called spikes -- when the buffer length exceeds a certain threshold. This spike-detection is used to identify elephant flows and thereafter de-prioritize them. Two-level processor-sharing (TLPS) scheduling is employed to schedule flows in two queues, one with the high-priority flows, and the other with the de-prioritized flows. We perform studies, using both analyses and simulations, to highlight the properties of the spike-detection mechanism. We show that, the proposed mechanism not only improves the response time of mice flows in a scalable way, but also gives better response times to other flows by treating them preferentially as long as they do not overload the high-priority queue." @default.
- W133715445 created "2016-06-24" @default.
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- W133715445 date "2011-01-01" @default.
- W133715445 modified "2023-10-07" @default.
- W133715445 title "Size-Based Flow-Scheduling Using Spike-Detection" @default.
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- W133715445 doi "https://doi.org/10.1007/978-3-642-21713-5_24" @default.
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