HAL will be down for maintenance from Friday, June 10 at 4pm through Monday, June 13 at 9am. More information
Skip to Main content Skip to Navigation

Heterogeneity in Distributed Live Streaming: Blessing or Curse?

Abstract : Distributed live streaming has brought a lot of interest in the past few years. In the homogeneous case (all nodes having the same capacity), many algorithms have been proposed, which have been proven almost optimal or optimal. On the other hand, the performance of heterogeneous systems is not completely understood yet. In this paper, we investigate the impact of heterogeneity on the achievable delay of chunk-based live streaming systems. We propose several models for taking the atomicity of a chunk into account. For all these models, when considering the transmission of a single chunk, heterogeneity is indeed a ``blessing'', in the sense that the achievable delay is always faster than an equivalent homogeneous system. But for a stream of chunks, we show that it can be a ``curse'': there is systems where the achievable delay can be arbitrary greater compared to equivalent homogeneous systems. However, if the system is slightly bandwidth-overprovisioned, optimal single chunk diffusion schemes can be adapted to a stream of chunks, leading to near-optimal, faster than homogeneous systems, heterogeneous live streaming systems.
Complete list of metadata

Contributor : Fabien Mathieu Connect in order to contact the contributor
Submitted on : Wednesday, September 9, 2009 - 7:31:01 PM
Last modification on : Friday, September 16, 2016 - 3:06:44 PM
Long-term archiving on: : Tuesday, June 15, 2010 - 9:38:24 PM


Files produced by the author(s)


  • HAL Id : inria-00414767, version 1
  • ARXIV : 0909.1792



Fabien Mathieu. Heterogeneity in Distributed Live Streaming: Blessing or Curse?. [Research Report] RR-OL-2009-09-001, 2009, pp.21. ⟨inria-00414767⟩



Record views


Files downloads