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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.


Papers
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Journal ArticleDOI
TL;DR: A cloud-assisted system for low-latency image super-resolution (SR) in mobile devices and a mobile-cloud cooperative execution pipeline composed of specialized data compression algorithms to minimize end-to-end latency with minimal image quality degradation are presented.
Abstract: We present Supremo, a cloud-assisted system for low-latency image Super-Resolution (SR) in mobile devices. As SR is extremely compute-intensive, we first further optimize state-of-the-art DNN to reduce the inference latency. Furthermore, we design a mobile-cloud cooperative execution pipeline composed of specialized data compression algorithms to minimize end-to-end latency with minimal image quality degradation. Finally, we extend Supremo to video applications by formulating a dynamic optimal control algorithm to design Supremo-Opt, which aims to maximize the impact of SR while satisfying latency and resource constraints under practical network conditions. Supremo upscales 360p image to 1080p in 122 ms, which is 43.68 x faster than on-device GPU execution. Compared to cloud offloading-based solutions, Supremo reduces wireless network bandwidth consumption and end-to-end latency by 15.23 x and 4.85 x compared to baseline approach of sending and receiving whole images, and achieves 2.39 dB higher PSNR compared to using conventional JPEG to achieve similar data size compression. Furthermore, Supremo-Opt guarantees robust performance in practical scenarios.

15 citations

Proceedings ArticleDOI
09 Jun 2013
TL;DR: RACS is proposed, a data center transport protocol that minimizes flow completion times by approximating the Shortest Remaining Processing Time (SRPT) scheduling policy, which is known to be optimal, in a distributed manner.
Abstract: Today's data centers face extreme challenges in providing low latency for online services such as web search, social networking, and recommendation systems. Achieving low latency is important as it impacts user experience, which in turn impacts operator revenue. However, most current congestion control protocols approximate Processor Sharing (PS), which is known to be sub-optimal for minimizing latency. In this paper, we propose Router Assisted Capacity Sharing (RACS), a data center transport protocol that minimizes flow completion times by approximating the Shortest Remaining Processing Time (SRPT) scheduling policy, which is known to be optimal, in a distributed manner. With RACS, flows are assigned weights which determine their relative priority and thus the rate assigned to them. By changing these weights, RACS can approximate a range of scheduling disciplines. Through extensive ns-2 simulations, we demonstrate that RACS outperforms TCP, DCTCP, and RCP in data center environments. In particular, it improves completion times by up to 95% over TCP, 88% over DCTCP, and 80% over RCP. Our results also show that RACS can outperform deadline-aware transport protocols for typical data center workloads.

15 citations

Patent
13 Sep 2006
TL;DR: In this paper, a time division multiplexed communication bus is proposed that provides a low latency, low pin count solution for communications among information handling systems, including modular computing systems, passthrough modules and chassis management controllers.
Abstract: A time division multiplexed communication bus is disclosed that provides a low latency, low pin count solution for communications among information handling systems. The time division multiplexed serial bus is advantageous in providing communications among modular computing systems, passthrough modules and chassis management controllers, as part of a modular computing system chassis.

15 citations

Book ChapterDOI
01 Jan 2021
TL;DR: In this article, a VIP-based virtual router architecture for a 4 × 4 mesh NoC system targeting up to 250 MHz using Xmulator has been proposed, which exhibits a low latency that requires 500-600 cycles on an average with respect to other router architecture.
Abstract: NoC is a growing technology where interconnected patterns are developed in the state of multiprocessors. Due to the complicated routing links, many issues prevail regarding traffic congestion and latency which leads to the poor performance of a network. In this research work, Virtual router architecture is introduced which yields low latency resulting in improving the performance of a network. The proposed VIP-based VC architecture for a \(4\times 4\) mesh NoC has experimented for 128-bit wide system targeting up to 250 MHz using Xmulator. The experimental outcome exhibits a low latency that requires 500–600 cycles on an average with respect to other router architecture. This outperforms 33% of low latency when compared to the Wormhole router architecture.

15 citations

Journal ArticleDOI
TL;DR: This paper provides experimental quantitative latency analysis of different low function split options at the fronthaul for URLLC applications using commercial off-the-shelf equipment (COTS), and demonstrates that having the simplest remote unit design, which only contains an analog optical-to-electrical convertor, can achieve the lowest fr onthaul latency.

15 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202210
2021692
2020481
2019389
2018366
2017227