Optimising network transfers to and from Queen Mary University of London, a large WLCG tier-2 grid site

20th International Conference on Computing in High Energy and Nuclear Physics

物理学;计算机科学

Walker, C.J.^1 ; Traynor, D.P.^1 ; Rand, D.T.^2 ; Froy, T.S.^1 ; Lloyd, S.L.^1

Queen Mary University of London, Mile End Road, London

El 4NS, United Kingdom^1

Imperial College London, Prince Consort Road, London

SW7 2BW, United Kingdom^2

关键词: High bandwidth;    Key parts;    Multiple data;    Network transfers;    Parallel transfers;    University of London;    Window Size;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/513/6/062048/pdf
DOI  :  10.1088/1742-6596/513/6/062048

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

Optimising network performance is key to high bandwidth data transfers required for a Tier-2 site. We describe the techniques we have used to obtain good performance. Monitoring plays a key part, as does the elimination of bottlenecks and tuning TCP window sizes. Multiple parallel transfers allowed us to saturate a l Gbit/s link for 24 hours - whilst still achieving acceptable download speeds. Source based routing and multiple data transfer servers allowed us to use an otherwise unused «resilient» link.