The bandwidth-intensive and long-lived nature of high quality digital video makes it a challenging problem to transmit such video over the Internet. In this paper, we propose a scalable and flexible framework integrating proxy-based prefix caching with periodic broadcast of the suffix of a video from the server, for efficiently streaming a set of popular videos to a large number of asynchronous...

Multimedia streaming applications consume significant amounts of server and network resources due to the high bandwidth requirements and long durations of audio and video clips. For popular videos, periodic broadcast techniques exploit the client’s buffer space and network reception bandwidth capabilities to reduce server and network transmission bandwidth requirements. In this paper, we system...

The bandwidth-intensive and long-lived nature of high quality digital video make it a challenging problem to transmit such video over the Internet. In this paper, we consider the problem of streaming a set of popular videos from a remote server to a large number of asynchronous clients, while making efficient use of network bandwidth, and still allowing clients to start instantaneous playback. ...

We consider a set of fluid On-Off flows that share a common server of capacity c and a finite buffer B. The server capacity is divided using Generalized Processor Sharing scheduling discipline. Each flow has a minimum service rate guarantee that exceeds its long term average demand ρi. The buffer sharing is unrestricted as long as there is available space; if the buffer is full, the necessary a...

Small n ×n switches are key components of multistage interconnection networks and communication coprocessors used in multiprocessors and multicomputers. Communication latency and throughput are critically dependent on the structure of the internal buffers in these switches. We have previously introduced the architecture of a new type of buffer, called a dynamically-allocated multi-queue (DAMQ) ...

This application example describes how Motion Control applications with the output stages for servo, DC and stepper motors by Beckhoff are optimized by the utilization of buffer capacitors. The buffer capacitor terminals EL9570 for EtherCAT and KL9570 for K-Bus stabilize the voltage supply by absorbing the fed back energy and dumping the energy that the buffer capacitor cannot protect against i...

Extensible systems allow services to be configured and deployed for the specific needs of individual applications. This paper describes a safe and efficient method for userlevel extensibility that requires only minimal changes to the kernel. A sandboxing technique is described that supports multiple logical protection domains within the same address space at user-level. This approach allows app...

We study the behavior of algorithms for buffering packets weighted by different levels of Quality of Service (QoS) guarantees in a single queue. Buffer space is limited, and packet loss occurs when the buffer overflows. We describe a modification of the previously proposed “preemptive greedy” algorithm of for buffer management and give an analysis to show that this algorithm achieves a competit...

This paper studies the buffer planning problem for interconnect centric floorplanning. Dead-spaces not held by blocks are the available location for buffer insertion. To make best use of these spaces for buffer requirements, we have to move blocks so that blocks’ room size is adjusted and dead-spaces could be redistributed. In this paper, we introduce a new algorithm to move blocks not only wit...