A control-theoretic approach to the design of an explicit rate controller for ABR service
IEEE/ACM Transactions on Networking (TON)
User-level internet path diagnosis
SOSP '03 Proceedings of the nineteenth ACM symposium on Operating systems principles
A measurement study of available bandwidth estimation tools
Proceedings of the 3rd ACM SIGCOMM conference on Internet measurement
Packet-dispersion techniques and a capacity-estimation methodology
IEEE/ACM Transactions on Networking (TON)
Estimating network proximity and latency
ACM SIGCOMM Computer Communication Review
S3: a scalable sensing service for monitoring large networked systems
Proceedings of the 2006 SIGCOMM workshop on Internet network management
Processor sharing flows in the internet
IWQoS'05 Proceedings of the 13th international conference on Quality of Service
Efficient and low-delay error control for large-BDP networks
Computer Communications
| Hi-index | 0.00 |
TCP/IP is known to have poor performance under conditions of moderate to high packet loss (5%-20%) and end-to-end latency (20-200 ms). The CHART system, under development by HP and its partners under contract to the US Defense Advanced Research Projects Agency, is a careful re-engineering of Internet Layer 3 and Layer 4 protocols to improve TCP/IP performance in these cases. The CHART system has just completed the second phase of a three-phase, 42-month development cycle. The goal for the 42-month program was a 10x improvement in the performance of TCP/IP under conditions of loss and delay. In independent tests for DARPA at Science Applications In-ternational Corporation, the CHART System demonstrated a 20x performance improvement over TCP/IP, exceeding the goals for the program by a factor of two. Fairness to legacy TCP and UDP ows was further demonstrated in DARPA testing. We describe the CHART System as a set of five interacting services and protocol improvements which act together to make TCP/IP robust under conditions of loss and latency, and we describe and detail the test regime and performance results.