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Reproducible Performance Optimization of Complex Applications on the Edge-to-Cloud Continuum [article]

Daniel Rosendo, Alexandru Costan, Gabriel Antoniu, Matthieu Simonin, Jean-Christophe Lombardo, Alexis Joly, Patrick Valduriez
2021 arXiv   pre-print
Our approach relies on a rigorous analysis of possible configurations in a controlled testbed environment to understand their behaviour and related performance trade-offs.  ...  In more and more application areas, we are witnessing the emergence of complex workflows that combine computing, analytics and learning.  ...  Experiments presented in this paper were carried out using the Grid'5000 testbed, supported by a scientific interest group hosted by Inria and including CNRS, RENATER and several Universities as well as  ... 
arXiv:2108.04033v1 fatcat:2y5sc4mdnrcujpco6upcqvfkpy


Sonia Ben Mokhtar, Antoine Boutet, Pascal Felber, Marcelo Pasin, Rafael Pires, Valerio Schiavoni
2017 Proceedings of the 18th ACM/IFIP/USENIX Middleware Conference on - Middleware '17  
attacks; and (3) from the performance perspective, X-Search outperforms its competitors both in terms of latency and throughput by orders of magnitude.  ...  The exploitation of user search queries by search engines is at the heart of their economic model.  ...  Rafael Pires is also sponsored by CNPq, National Counsel of Technological and Scientific Development, Brazil.  ... 
doi:10.1145/3135974.3135987 dblp:conf/middleware/MokhtarBFPPS17 fatcat:coyko2m67vcnllruu2cbgp47uy

Fog-based Spider Web Algorithm to Overcome Latency in Cloud Computing

ABDUL RASHID DAR, D Ravindran, Shahidul Islam
2020 Iraqi Journal of Science  
The cloud-users are getting impatient by experiencing the delays in loading the content of the web applications over the internet, which is usually caused by the complex latency while accessing the cloud  ...  In this manuscript, we propose a Fog-based Spider Web Algorithm (FSWA), a heuristic approach which reduces the delays time (DT) and enhances the response time (RT) during the workflow among the various  ...  In this manuscript, we highlight some of the issues such as complex latencies and response and searching time that cloud computing end-users are facing.  ... 
doi:10.24996/ijs.2020.61.7.27 fatcat:6ja7xylelbbclgmc27pseqdypq

An Overview of Cloud Based Content Delivery Networks: Research Dimensions and State-of-the-Art [chapter]

Meisong Wang, Prem Prakash Jayaraman, Rajiv Ranjan, Karan Mitra, Miranda Zhang, Eddie Li, Samee Khan, Mukkaddim Pathan, Dimitrios Georgeakopoulos
2015 Lecture Notes in Computer Science  
In this regard, we present an overview of cloud-based CDN followed by a detailed discussion on open challenges and research dimensions.  ...  Unlike traditional CDNs hosted on private data centers, cloud-based CDNs take advantage of the geographical availability and the pay-as-you-go model of cloud platforms.  ...  In today"s dynamic Internet landscape, it is more important than ever for content and service providers to understand the requirements and demands of users.  ... 
doi:10.1007/978-3-662-46703-9_6 fatcat:xnkkbfdj35gklkcrdwdpatda2a

A tale of the tails: Power-laws in internet measurements

Aniket Mahanti, Niklas Carlsson, Anirban Mahanti, Martin Arlitt, Carey Williamson
2013 IEEE Network  
Power-laws are ubiquitous in the Internet and its applications. This tutorial presents a review of power-laws with emphasis on observations from Internet measurements.  ...  We observe that despite the challenges posed, power-laws have been effectively leveraged by researchers to improve the design and performance of Internet-based systems.  ...  The idea of hubs and authorities was used for ranking Web pages in one of the early search mechanisms [11] .  ... 
doi:10.1109/mnet.2013.6423193 fatcat:qaneoc2h5fclvh73rkb64vlgwa


2006 International journal of software engineering and knowledge engineering  
will impact the user experience and the cost of using the application.  ...  From the simulated volume and time data, we can then calculate the cost of accessing the application on a mobile channel, and derive suitable approaches for optimizing cost and response times.  ...  Acknowledgements The authors would like to thank Clemens Schäfer and Daniel Trabold for their input on the local proxy optimization approach.  ... 
doi:10.1142/s021819400600294x fatcat:qq6ivsyayrhxbajzvrmlakjave

Measuring Web Quality of Experience in Cellular Networks [chapter]

Alemnew Sheferaw Asrese, Ermias Andargie Walelgne, Vaibhav Bajpai, Andra Lutu, Özgü Alay, Jörg Ott
2019 Msphere  
we present the overall findings on web latency and the impact of cache presence on web latency, respectively. Following that, in Section 4.4, we discuss the longitudinal observations on web latency.  ...  In Section 4.5 and 4.6, we present the impact of throughput on web latency, and the web latency between different regions, respectively. Finally, Section 4.7 discusses the findings on the web QoE.  ... 
doi:10.1007/978-3-030-15986-3_2 fatcat:ssb34hgtebhjhl2sh5ectc77fm

Evaluating context-aware user interface migration in multi-device environments

Giuseppe Ghiani, Jussi Polet, Ville Antila, Jani Mäntyjärvi
2013 Journal of Ambient Intelligence and Humanized Computing  
During a single day, people can use a smartphone, tablet, PC and a TV, sequentially or simultaneously, depending on the context of use.  ...  In this paper, we present a solution for migrating user interface and maintaining the interaction session across devices when changing situations.  ...  Acknowledgments The support from the European Union ARTE-MIS Smarcos project (2012) is gratefully acknowledged.  ... 
doi:10.1007/s12652-013-0214-7 fatcat:rahqvft4r5aopb3jmwg26v5alq

All One Needs to Know about Metaverse: A Complete Survey on Technological Singularity, Virtual Ecosystem, and Research Agenda [article]

Lik-Hang Lee, Tristan Braud, Pengyuan Zhou, Lin Wang, Dianlei Xu, Zijun Lin, Abhishek Kumar, Carlos Bermejo, Pan Hui
2021 arXiv   pre-print
In terms of applications, the metaverse ecosystem allows human users to live and play within a self-sustaining, persistent, and shared realm.  ...  Since the popularisation of the Internet in the 1990s, the cyberspace has kept evolving.  ...  impact the user behaviours and decision making [656] (More details in Section XV-C).  ... 
arXiv:2110.05352v3 fatcat:pv4fxf5lfbc7vk3ogsyidwfloy

Case Studies in Application Placement and Infrastructure Optimisation [chapter]

Miguel Angel López-Peña, Hector Humanes, Johan Forsman, Thang Le Duc, Peter Willis, Manuel Noya
2020 The Cloud-to-Thing Continuum  
This chapter presents four case studies each illustrating an implementation of one or more RECAP subsystems.  ...  The first case study illustrates how RECAP can be used for infrastructure optimisation for a 5G network use case. The second case study explores application  ...  As discussed earlier, the deployed LKN search service stack consists of a web server where the users input their queries and an ES cluster which is responsible for the search and returning the response  ... 
doi:10.1007/978-3-030-39863-7_6 fatcat:vvbqfldcx5gpjezc3w6wt73cce

NeuralQA: A Usable Library for Question Answering (Contextual Query Expansion + BERT) on Large Datasets [article]

Victor Dibia
2020 arXiv   pre-print
Finally, it offers a flexible user interface to support workflows for research explorations (e.g., visualization of gradient-based explanations to support qualitative inspection of model behaviour) and  ...  They can be complex to set up or integrate with existing infrastructure, do not offer configurable interactive interfaces, and do not cover the full set of subtasks that frequently comprise the QA pipeline  ...  Acknowledgments The author thanks Melanie Beck, Andrew Reed, Chris Wallace, Grant Custer, Danielle Thorpe and other members of the Cloudera Fast Forward team for their valuable feedback.  ... 
arXiv:2007.15211v2 fatcat:q5wnqc6awzdw7nsxoyl4ehlb4u

Literature Review of Computer Tools for the Visually Impaired: a focus on Search Engines [article]

Guy Meyer, Alan Wassyng, Mark Lawford, Kourosh Sabri, Shahram Shirani
2020 arXiv   pre-print
A sudden reliance on the internet has resulted in the global standardization of specific software and interfaces tailored for the average user.  ...  Due to the variety of tools that are available to computer users, the paper focuses on search engines as a primary tool for browsing the web.  ...  Developers should also leverage user-oriented techniques since a user's context, history, or trail can impact future searches Primary Attributes of Tools A collection of attributes is described below  ... 
arXiv:2010.11163v1 fatcat:72s5ps5765bdbmhu3azev5e4iu

Next Generation Repositories: Behaviours And Technical Recommendations Of The Coar Next Generation Repositories Working Group [article]

Eloy Rodrigues, Andrea Bollini, Alberto Cabezas, Donatella Castelli, Les Carr, Leslie Chan, Chuck Humphrey, Rick Johnson, Petr Knoth, Paolo Manghi, Lazarus Matizirofa, Pandelis Perakakis (+6 others)
2017 Zenodo  
In order to leverage the value of the repository network, we need to equip it with a wider array of roles and functionalities, which can be enabled through new levels of web-centric interoperability.  ...  However, repository platforms are still using technologies and protocols designed almost twenty years ago, before the boom of the Web and the dominance of Google, social networking, semantic web and ubiquitous  ...  User stories related to this behaviour As a user, I want to discover repository materials of interest via aggregators or other search services such as BASE, CORE, OpenAIRE, and so on.  ... 
doi:10.5281/zenodo.1215014 fatcat:rjg7zqke4fb5robdavzs3wc5yu

A Cache-based Optimizer for Querying Enhanced Knowledge Bases [article]

Wei Emma Zhang, Quan Z. Sheng, Schahram Dustdar
2018 arXiv   pre-print
Efficient discovery and querying such knowledge remains a key challenge due to the limited capability and high latency of connections to the interfaces of knowledge bases, e.g., the SPARQL endpoints.  ...  The evaluations on query sets from SPARQL endpoints of DBpedia and Linked GeoData showcase the effectiveness of our approach.  ...  Future work directions include: i) more experimental studies using large-scale Web data, ii) online learning techniques to deal with the dynamicity of Web data, and iii) investigation of user behaviours  ... 
arXiv:1807.08461v1 fatcat:2fz56iwrlbbtvkjzul7nexmjui

Efficient Query Processing for Scalable Web Search

Nicola Tonellotto, Craig Macdonald, Iadh Ounis
2018 Foundations and Trends in Information Retrieval  
In satisfying the information needs of millions of users, the effectiveness (the quality of the search results) and the efficiency (the speed at which the results are returned to the users) of a search  ...  A key detail of the manner in which a search engine is designed to operate is the "topheavy nature" of results: since the users of search engines typically focus on the top-ranked results (as can be measured  ...  Acknowledgements We would like to thank Maarten de Rijke for his patience and encouragements during the preparation of this manuscript, as well as the three anonymous reviewers for their constructive suggestions  ... 
doi:10.1561/1500000057 fatcat:wx53qhvfhnfwfc4hgdva5ypw3u
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