Browsing ODA Open Digital Archive by Author "Bratterud, Alfred"
Now showing items 1-7 of 7
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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 ... -
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 ... -
Crawling JavaScript websites using WebKit - with application to analysis of hate speech in online discussions
Hammer, Hugo Lewi; Bratterud, Alfred; Fagernes, Siri (NIK: Norsk Informatikkonferanse;2013, Journal article; Peer reviewed, 2013-11)JavaScript Client-side hidden web pages (CSHW) contain dynamic material created as a result of specific user activities. The number of CSHW websites is increasing. Crawling the so-called Hidden Web is challenging, particularly ... -
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 ... -
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 ... -
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 ... -
Recovering Request Patterns to a CPU Processor from Observed CPU Consumption Data
Hammer, Hugo Lewi; Yazidi, Anis; Bratterud, Alfred; Haugerud, Hårek; Feng, Boning (Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering;188(1), Journal article; Peer reviewed, 2016)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 ...