Results 1 - 10 of 283

Reducing Web Latency: the Virtue of Gentle Aggression

by unknown authors
"... To serve users quickly, Web service providers build infrastruc-ture closer to clients and use multi-stage transport connections. Although these changes reduce client-perceived round-trip times, TCP’s current mechanisms fundamentally limit latency improve-ments. We performed a measurement study of a ..."
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large Web service provider and found that, while connections with no loss complete close to the ideal latency of one round-trip time, TCP’s timeout-driven recovery causes transfers with loss to take five times longer on average. In this paper, we present the design of novel loss recovery mech-anisms

Tcp-like congestion control for layered multicast data transfer

by Lorenzo Vicisano, Jon Crowcroft, Luigi Rizzo , 1998
"... Abstract—We present a novel congestion control algorithm suitable for use with cumulative, layered data streams in the MBone. Our algorithm behaves similarly to TCP congestion control algorithms, and shares bandwidth fairly with other instances of the protocol and with TCP flows. It is entirely rece ..."
Abstract - Cited by 379 (12 self) - Add to MetaCart
response to losses both analytically and by simulations, and analyse its behaviour using simulations and experiments in real networks. We also show how error recovery can be dealt with independently from congestion control by using FEC techniques, so as to provide reliable bulk data transfer.

ReVive: CostEffective Architectural Support for Rollback Recovery in Shared-Memory Multiprocessors

by Milos Prvulovic, Zheng Zhang, Josep Torrellas - In ISCA-02 , 2002
"... This paper presents ReVive, a novel general-purpose rollback recovery mechanism for shared-memory multiprocessors. ReVive carefully balances the conflicting requirements of availability, performance, and hardware cost. ReVive performs checkpointing, logging, and distributed parity protection, all me ..."
Abstract - Cited by 120 (13 self) - Add to MetaCart
This paper presents ReVive, a novel general-purpose rollback recovery mechanism for shared-memory multiprocessors. ReVive carefully balances the conflicting requirements of availability, performance, and hardware cost. ReVive performs checkpointing, logging, and distributed parity protection, all

Active Reliable Multicast

by Li-wei H. Lehman, Stephen J. Garland, David L. Tennenhouse , 1998
"... This paper presents a novel loss recovery scheme, Active Reliable Multicast (ARM), for large-scale reliable multicast. ARM is "active" in that routers in the multicast tree play an active role in loss recovery. Additionally, ARM utilizes soft-state storage within the network to improve per ..."
Abstract - Cited by 113 (2 self) - Add to MetaCart
This paper presents a novel loss recovery scheme, Active Reliable Multicast (ARM), for large-scale reliable multicast. ARM is "active" in that routers in the multicast tree play an active role in loss recovery. Additionally, ARM utilizes soft-state storage within the network to improve

A NOVEL PACKET LOSS RECOVERY TECHNIQUE FOR MULTIMEDIA COMMUNICATION

by Wenqing Jiang, Antonio Ortega
"... In this paper a novel loss recovery technique is proposed for multimedia communications over lossy packet networks. The proposed technique uses a combination of recent results on multiple description coding and erasure recovery codes in channel coding. The uniqueness of the proposed technique lies i ..."
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In this paper a novel loss recovery technique is proposed for multimedia communications over lossy packet networks. The proposed technique uses a combination of recent results on multiple description coding and erasure recovery codes in channel coding. The uniqueness of the proposed technique lies

Rollback-Recovery for Middleboxes

by Arvind Krishnamurthy, Christian Maciocco, Maziar Manesh, João Martins, Sylvia Ratnasamy, Luigi Rizzo, Scott Shenker
"... Network middleboxes must offer high availability, with au-tomatic failover when a device fails. Achieving high avail-ability is challenging because failover must correctly restore lost state (e.g., activity logs, port mappings) but must do so quickly (e.g., in less than typical transport timeout val ..."
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a failure. However, traditional rollback recovery cannot maintain high throughput given the frequent output rate of middleboxes. Hence, we design a novel solu-tion to record middlebox state which relies on two mech-anisms: (1) ‘ordered logging’, which provides lightweight logging of the information

EXPLODE: a Lightweight, General System for Finding Serious Storage System Errors

by Junfeng Yang, Can Sar , Dawson Engler , 2006
"... Storage systems such as file systems, databases, and RAID systems have a simple, basic contract: you give them data, they do not lose or corrupt it. Often they store the only copy, making its irrevocable loss almost arbitrarily bad. Unfortunately, their code is exceptionally hard to get right, since ..."
Abstract - Cited by 91 (12 self) - Add to MetaCart
-specific checkers and uses them to drive a storage system into tricky corner cases, including crash recovery errors. EXPLODE uses a novel adaptation of ideas from model checking, a comprehensive, heavyweight formal verification technique, that makes its checking more systematic (and hopefully more effective) than a

Fast spectral reflectance recovery using DLP projector

by Shuai Han, Imari Sato, Takahiro Okabe, Yoichi Sato - In Proc. ACCV , 2011
"... Abstract. Spectral reflectance is an intrinsic characteristic of objects which is useful for solving a variety of computer vision problems. In this work, we present a novel system for spectral reflectance recovery with a high temporal resolution by exploiting the unique color-forming mech-anism of D ..."
Abstract - Cited by 6 (1 self) - Add to MetaCart
Abstract. Spectral reflectance is an intrinsic characteristic of objects which is useful for solving a variety of computer vision problems. In this work, we present a novel system for spectral reflectance recovery with a high temporal resolution by exploiting the unique color-forming mech-anism

A Novel Recovery Technique For Lost Internet Video Frames Simulation and Evaluation

by Omar S. Essa, Nikos E Mastorakis
"... Abstract: Internet was designed to support traditional and multimedia applications. Multimedia applications suffer from unacceptable delay, jitter and data loss. Data loss has the largest impact on quality. When the retransmission technique is used to recover lost multimedia packets, more obstacles, ..."
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Abstract: Internet was designed to support traditional and multimedia applications. Multimedia applications suffer from unacceptable delay, jitter and data loss. Data loss has the largest impact on quality. When the retransmission technique is used to recover lost multimedia packets, more obstacles

Needle map recovery using robust regularizers

by Philip L. Worthington, Edwin R. Hancock - Image and Vision Computing , 1998
"... This article describes how robust error-kernels can be used as smoothness priors in recovering shape-from-shading (SFS). Conventionally, the smoothness error is added to the data-closeness (or brightness-error) as a quadratic regularizer. This leads to over-smoothing of the recovered needle-map or s ..."
Abstract - Cited by 22 (10 self) - Add to MetaCart
-map or surface, and the loss of important detail provided by surface discontinuities. To solve this problem, we investigate the use of robust regularizers to reduce the smoothening by treating rapid changes in surface orientation as outliers in the calculation of the smoothness error. In particular, we study
Results 1 - 10 of 283