2014/10/07 by D. Michael Freemon, Freemon, D. Michael
Computer Science · #FOS: Computer and information sciences #Interconnection Networks and Systems #Network Traffic and Congestion Control #Networking and Internet Architecture (cs.NI) #Parallel Computing and Optimization Techniques #cs.NI
paper · pdf · doi:10.48550/arxiv.1410.1939
arxiv created 2014/10/07 · openalex publication_date 2014/10/07 · arxiv updated 2014/10/09 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Like many big science projects, the Large Synoptic Survey Telescope (LSST) has multiple geographic locations among which large amounts of data must be transferred. One particular type of data, crosstalk-corrected images, must be moved from South America to North America under stringent deadline requirements. LSST is provisioning an international network with bandwidth guarantees to handle this traffic. In prior work, we re-examined TCP congestion control for this use case and found that TCP throughput can approach wire speeds. This work shows that the Hierarchical Token Bucket (HTB) provides an excellent mechanism by which bandwidth can be managed for a wide range of traffic types. Using HTB without TCP congestion control over guaranteed-bandwidth virtual circuits is a compelling solution to the historical problem of poor TCP performance over long fat networks.