Latency (engineering)

About: Latency (engineering) is a research topic. Over the lifetime, 3729 publications have been published within this topic receiving 39210 citations. The topic is also known as: lag.

Background format optimization for enhanced SQL-like queries in Hadoop

Abstract: A format conversion engine for Apache Hadoop that converts data from its original format to a database-like format at certain time points for use by a low latency (LL) query engine. The format conversion engine comprises a daemon that is installed on each data node in a Hadoop cluster. The daemon comprises a scheduler and a converter. The scheduler determines when to perform the format conversion and notifies the converter when the time comes. The converter converts data on the data node from its original format to a database-like format for use by the low latency (LL) query engine.

SLIPstream: scalable low-latency interactive perception on streaming data

Abstract: A critical problem in implementing interactive perception applications is the considerable computational cost of current computer vision and machine learning algorithms, which typically run one to two orders of magnitude too slowly to be used interactively. Fortunately, many of these algorithms exhibit coarse-grained task and data parallelism that can be exploited across machines. The SLIPstream project focuses on building a highly-parallel runtime system called Sprout that can harness the computing power of a cluster to execute perception applications with low latency. This paper makes the case for using clusters for perception applications, describes the architecture of the Sprout runtime, and presents two compute-intensive yet interactive applications.

Low latency and large port count optical packet switch with highly distributed control

Abstract: We demonstrate for the first time 40 Gb/s operation of a modular large port count optical packet switch with highly distributed control. The switch shows 25ns latency and record low energy consumption of 76.5 pj/bit.

High-Speed Networking: A Systematic Approach to High-Bandwidth Low-Latency Communication

Abstract: Summary form only given. The tutorial presents a comprehensive introduction to all aspects of high-speed networking, based on the book by J.P.G. Sterbenz and J.D. Touch ("High-Speed Networking: A Systematic Approach to High-Bandwidth Low-Latency Communication", John Wiley, 2001). The target audience includes computer scientists and engineers who may have expertise in a narrow aspect of high-speed networking, but want to gain a broader understanding of all aspects of high-speed networking and the impact that their designs have on overall network performance. The tutorial is not about any particular protocols and standards, but is rather a systemic and systematic approach to the principles that guide the research and design of high-speed networks, protocols, and applications. The tutorial presents a set of fundamental axioms, some major topics and a set of design principles that are defined and applied to each of the topics. A set of design techniques are introduced and applied as appropriate.

Data transmission/reception method in wireless communication system that supports low latency, and apparatus therefor

Abstract: Disclosed is a method for transmitting and receiving data by a user equipment (UE) in a wireless communication system supporting low latency includes receiving downlink (DL) control information including a transmission time interval (TTI) indication field indicating a short TTI in which low latency data is scheduled, from an eNB through a DL physical channel, and receiving the low latency data from the eNB through a scheduled short TTI on the basis of the received TTI indication field.