Browsing by Subject "load balancing"

Now showing 1 - 5 of 5

Access status: Open Access ,
An agent-based hierarchical approach for executing bag-of-tasks in clouds
(Wydawnictwa AGH, 2014) Funika, Włodzimierz; Mazurek, Kamil; Kruczkowski, Wojciech
Unlike message-passing applications, »bag-of-tasks« applications (BoTs), whose tasks are unrelated and independent (no inter-task communication), can be highly parallelized and executed in any acceptable order. A common practice when executing bag-of-tasks applications (BoT) is to exploit the master-slave topology. Cloud environments offer some features that facilitate the execution of BoT applications. One of the approaches to control-cloud resources is to use agents that are flexible actors in a dynamic environment. Given these assumptions, we have designed a combination of approaches which can be classified as distributed, hierarchical solutions to the issue of scalable execution of bag-of-tasks. The concept of our system relates to a project that is focused on processing huge quantities of incoming data from a network of sensors through the Internet. Our aim is to create a mechanism for processing such data as a system that executes jobs while exploiting load balancing for cloud resources which use applications such as Eucalyptus. The idea is to create a hybrid architecture which takes advantage of some centralized parts of the system and full distributedness in other parts. On the other hand, we balance dependencies between system components using a hierarchical master-slave structure.
Access status: Open Access ,
Network management services based on the OpenFlow environment
(Wydawnictwa AGH, 2014) Wilk, Paweł; Nawrocki, Piotr
The subject of this article is network management through web service calls, which allows software applications to exert an influence on network traffic. In this manner, software can make independent decisions concerning the direction of requests so that they can be served as soon as possible. This is important because only proper cooperation including all architecture layers can ensure the best performance, especially when software that largely depends on computer networks and utilizes them heavily is involved. To demonstrate that the approach described above is feasible and can be useful at the same time, this article presents a switch-level load balancer developed using OpenFlow. Client software communicates with the balancer through REST web service calls, which are used to provide information on current machine load and its ability to serve incoming requests. The result is a cheap, highly customizable and extremely fast load balancer with considerable potential for further development.
Access status: Restricted ,
Programowy load balancing oraz analiza i porównanie wydajności względem wybranej strategii
(Data obrony: 2021-01-26) Gwoździewicz, Adrian
Wydział Elektrotechniki, Automatyki, Informatyki i Inżynierii Biomedycznej
Access status: Restricted ,
Tworzenie skalowalnych serwisów internetowych
(Data obrony: 2010-07-07) Hajduk, Adrian
Wydział Geologii, Geofizyki i Ochrony Środowiska
A load balancing issue for homogeneous and heterogeneous web servers is described in this document. The review of algorithms and solutions is shown. The independence of simultaneous requests for this server is proved. Results of experimental tests are presented.
Access status: Restricted ,
Tworzenie skalowalnych systemów informatycznych w oparciu o Cloud Computing
(Data obrony: 2013-07-04) Habrat, Krzysztof
Wydział Geologii, Geofizyki i Ochrony Środowiska
In this paper, a load balancing issue for Cloud Computing based web servers was described. Author made review of the most popular (commercial and noncommercial) Cloud Computing systems. The EUCALYPTUS cloud and its use for parallel processing for web services was presented. The review of three load balancing algorithms (Request Counting, Weighted Traffic Counting and Pending Request Counting) was shown.