Virtualised e-Learning on the IRMOS real-time Cloud

Abstract

Providing proper timeliness guarantees to distributed soft real-time applications in a virtualised infrastructure involves the careful use of various techniques at different levels, ranging from real-time scheduling mechanisms at the virtual-machine hypervisor level and QoS-aware protocols at the network level, to proper design methodologies and tools for stochastic modelling and runtime provisioning of the applications. This paper describes the way these techniques were combined to provide strong quality of service guarantees to interactive soft real-time applications in the Cloud Computing infrastructure that has been developed in the con-

5G & SLAs: Automated proposition and management of agreements towards QoS enforcement

“…Furthermore, more details regarding the requirements mapping can be found in. A generic black box approach, based on ANNs is used in order to perform the aforementioned translation between low and high-level requirements [8][9][10][11].…”

SLAs in 5G: A Complete Framework Facilitating VNF- and NS- Tailored SLAs Management

“…In this case, the authors provide a framework that implements the reverse process of the one that we suggest, where the translation of low level parameters to high-level requirements that are used in cloud SLAs is achieved. Furthermore, more details regarding the requirements mapping can be found in [16][17]. A generic black box approach, based on ANNs is used to perform the aforementioned translation between low and high-level requirements.…”

Multi-Mode Virtualization for Soft Real-Time Systems

“…In KVM, it is possible to apply a real-time scheduler [31,32] for VCPUs, thus achieving hierarchical realtime scheduling. The deadline-based real-time scheduler [6] in the IRMOS project [33] is an instance of hierarchical real-time scheduling based on KVM. Another KVM-based scheduler, ExVM [34], adopts flattened scheduling design [35].…”