• A Queue Model for Reliable Forecasting of Future CPU Consumption 

      Hammer, Hugo Lewi; Yazidi, Anis; Bratterud, Alfred; Haugerud, Hårek; Feng, Boning (Journal article; Peer reviewed, 2017)
      Statistical queuing models are popular to analyze a computer systems ability to process different types requests. A common strategy is to run stress tests by sending artificial requests to the system. The rate and sizes ...
    • Achieving Connectivity between Wide Areas Through Self-Organising Robot Swarms using Embodied Evolution 

      Erik Aaron, Hansen; Nichele, Stefano; Yazidi, Anis; Haugerud, Hårek; Abolpour Mofrad, Asieh; Alcocer, Alex (Chapter; Peer reviewed, 2018)
      Abruptions to the communication infrastructuremight occur occasionally, where manual intervention by dedi-cated personnel is needed to fix the interruptions, restoring com-munication abilities. However, sometimes this can ...
    • Adaptive Pursuit Learning for Energy‐efficient Target Coverage in Wireless Sensor Networks 

      Upreti, Ramesh; Rauniyar, Ashish; Kunwar, Jeevan; Haugerud, Hårek; Engelstad, Paal E.; Yazidi, Anis (Concurrency and Computation: Practice and Experience; e5975, Journal article; Peer reviewed, 2020-08-25)
      With the proliferation of technologies such as wireless sensor networks (WSNs) and the Internet of things (IoT), we are moving towards the era of automation without any human intervention. Sensors are the principal components ...
    • Affinity Aware-Scheduling of Live Migration of Virtual Machines Under Maintenance Scenarios. 

      Yazidi, Anis; Ung, Frederik; Haugerud, Hårek; Begnum, Kyrre Matthias (Proceedings of the IEEE Symposium on Computers and Communications;2019 IEEE Symposium on Computers and Communications (ISCC), Conference object; Peer reviewed; Chapter, 2019)
      During maintenance and disaster recovery scenarios, Virtual Machine (VM) inter-site migrations usually take place over limited bandwidth–typically Wide Area Network (WAN)–which is highly affected by the amount of inter-VM ...
    • Analyzing the compression of Opera Mini TM traffic 

      Østen, Stian (Master thesis, 2008)
      Opera Mini TM is a mobile web browser. It was developed for mobile phones incapable of running regular web browsers and released globally in January 2006. It has gained great popularity and can be downloaded free of ...
    • Autonomous configuration of network parameters in operating systems using evolutionary algorithms 

      Gembala, Bartosz Gembala; Yazidi, Anis; Haugerud, Hårek; Nichele, Stefano (Proceedings of the 2018 Conference on Research in Adaptive and Convergent Systems;, Chapter; Peer reviewed, 2018)
      By default, the Linux network stack is not configured for highspeed large file transfer. The reason behind this is to save memory resources. It is possible to tune the Linux network stack by increasing the network buffers ...
    • The Concept of Workload Delay as a Quality-of-Service Metric for Consolidated Cloud Environments with Deadline Requirements 

      Tasoulas, Evangelos; Hammer, Hugo Lewi; Haugerud, Hårek; Yazidi, Anis; Bratterud, Alfred; Feng, Boning (Chapter; Peer reviewed, 2017)
      Virtual Machine (VM) consolidation in the cloud has received significant research interest. A large body of approaches for VM consolidation in data centers resort to variants of the bin packing problem which tries to ...
    • Cost efficient batch processing in amazon cloud with deadline awareness 

      Tamrakar, Kabin; Yazidi, Anis; Haugerud, Hårek (Advanced Information Networking and Applications;2017 IEEE 31st International Conference on Advanced Information Networking and Applications (AINA), Journal article; Peer reviewed, 2017)
      Amazon spot instances have become a very popular alternative for cost-saving in the cloud. The spot instances are prone to abrupt termination whenever the spot market price exceeds the bid price. In this paper, spot instances ...
    • A Decentralized Approach for Homogenizing Load Distribution in Cloud Data Center Based on Stable Marriage Matching 

      Sangar, Disha; Haugerud, Hårek; Yazidi, Anis; Begnum, Kyrre Matthias (MEDES '19: Proceedings of the 11th International Conference on Management of Digital EcoSystems;, Conference object; Peer reviewed; Chapter, 2019)
      Running a sheer virtualized data center with the help of Virtual Machines (VM) is the de facto-standard in modern data centers. Live migration offers immense flexibility opportunities as it endows the system administrators ...
    • Detecting Yo-Yo DoS attack in acontainer-based environment 

      Danielsen, Viktor (ACIT;2021, Master thesis, 2021)
      Denial-of-Service (DoS) attacks are an ever persistent treath to IT environ-ments and it occurs today at an ever-increasing rate from year to year. Asthe world develops and companies migrate their systems from private ...
    • Does Clicker Use Improve Exam Scores? A Controlled Randomized Experiment in a Bachelor-Level Course in Software Engineering 

      Kvadsheim, Reidar; Haugerud, Hårek; Hammer, Hugo Lewi; Bratterud, Alfred; Habib, Laurence (Journal article, 2015)
      This paper reports a study of clicker use within an undergraduate course in Operating Systems. It is based on a controlled, randomized experiment with a crossover design that measures learning outcomes by means of test ...
    • Effective live migration of virtual machines using partitioning and affinity aware-scheduling 

      Yazidi, Anis; Ung, Fredrik; Haugerud, Hårek; Begnum, Kyrre (Computers and Electrical Engineering;volume 69 (2018), Journal article; Peer reviewed, 2018-07-11)
      During maintenance and disaster recovery scenarios, Virtual Machine (VM) inter-site migrations usually take place over limited bandwidth—typically Wide Area Network (WAN)—which is highly affected by the amount of inter-VM ...
    • Energy Efficient Target Coverage in Wireless Sensor Networks Using Adaptive Learning 

      Rauniyar, Ashish; Kunwar, Jeevan; Haugerud, Hårek; Yazidi, Anis; Engelstad, Paal E. (Communications in Computer and Information Science;volume 1130, Journal article; Peer reviewed; Book chapter, 2019)
      Over the past few years, innovation in the development of Wireless Sensor Networks (WSNs) has evolved rapidly. WSNs are being used in many application fields such as target coverage, battlefield surveillance, home security, ...
    • Generating synthetic VoIP traffic for analyzing redundant OpenBSD-Firewalls 

      Woernhard, Maurice David (Master thesis, 2006)
      Voice over IP, short VoIP, is among the fastest growing broadband technologies in the private and commercial sector. Compared to the Plain Old Telephone System (POTS), Internet telephony has reduced availability, measured ...
    • IncludeOS: A minimal, resource efficient unikernel for cloud services 

      Bratterud, Alfred; Walla, Alf-Andre; Haugerud, Hårek; Engelstad, Paal E.; Begnum, Kyrre (IEEE International Conference on Cloud Computing Technology and Science;2015, Journal article; Peer reviewed, 2015)
      The emergence of cloud computing as a ubiquitous platform for elastically scaling services has generated need and opportunity for new types of operating systems. A service that needs to be both elastic and resource efficient ...
    • Management of high availability services using virtualization 

      Braastad, Espen (Master thesis, 2006)
      This thesis examines the use of virtualization in management of high availability services using open source tools. The services are hosted in virtual machines, which can be seamlessly migrated between the physical nodes ...
    • Maximizing hypervisor scalability using minimal virtual machines 

      Bratterud, Alfred; Haugerud, Hårek (IEEE International Conference on Cloud Computing Technology and Science;, Chapter; Peer reviewed, 2013)
      The smallest instance offered by Amazon EC2 comes with 615MB memory and a 7.9GB disk image. While small by today's standards, embedded web servers with memory footprints well under 100kB, indicate that there is much to be ...
    • Migrating stateful containers using an autonomous collector 

      Knutsen, Kjetil (Master thesis, 2021)
      With the growth of cloud computing and Infrastructure as a Service, and the need to keep costs low many companies tries to utilize all their available resources as much as possible. Today, there is not currently any solution ...
    • Minimum-Impact First: Scheduling Virtual Machines Under Maintenance Scenarios 

      Yazidi, Anis; Haugerud, Hårek; Ung, Frederik; Begnum, Kyrre Matthias (11th ACM International Conference on Management of Digital EcoSystems;, Conference object; Peer reviewed; Chapter, 2019)
      Virtual Machine (VM) migration is an important feature for ensuring smooth operations during maintenance and disaster recovery scenarios. The migration might be inter-site and in such a case the inter-site bandwidth which ...
    • Mitigating DDoS using weight-based geographical clustering 

      Kongshavn, Madeleine; Haugerud, Hårek; Yazidi, Anis; Maseng, Torleiv; Hammer, Hugo Lewi (Concurrency and Computation: Practice and Experience;Volume 32, Issue 11, e5679, Journal article; Peer reviewed, 2020-02-22)
      Distributed denial of service (DDoS) attacks have for the last two decades been among the greatest threats facing the internet infrastructure. Mitigating DDoS attacks is a particularly challenging task as an attacker tries ...