TY - CHAP
T1 - Uncertainty in the Cloud: An Angel-Daemon Approach to Modelling Performance
AU - Stewart, Alan
AU - Gabarro, Joaquim
AU - Keenan, Anthony
PY - 2015/7/12
Y1 - 2015/7/12
N2 - Uncertainty profiles are used to study the effects of contention within cloud and service-based environments. An uncertainty profile provides a qualitative description of an environment whose quality of service (QoS) may fluctuate unpredictably. Uncertain environments are modelled by strategic games with two agents; a daemon is used to represent overload and high resource contention; an angel is used to represent an idealised resource allocation situation with no underlying contention. Assessments of uncertainty profiles are useful in two ways: firstly, they provide a broad understanding of how environmental stress can effect an application’s performance (and reliability); secondly, they allow the effects of introducing redundancy into a computation to be assessed
AB - Uncertainty profiles are used to study the effects of contention within cloud and service-based environments. An uncertainty profile provides a qualitative description of an environment whose quality of service (QoS) may fluctuate unpredictably. Uncertain environments are modelled by strategic games with two agents; a daemon is used to represent overload and high resource contention; an angel is used to represent an idealised resource allocation situation with no underlying contention. Assessments of uncertainty profiles are useful in two ways: firstly, they provide a broad understanding of how environmental stress can effect an application’s performance (and reliability); secondly, they allow the effects of introducing redundancy into a computation to be assessed
U2 - 10.1007/978-3-319-20807-7_13
DO - 10.1007/978-3-319-20807-7_13
M3 - Chapter (peer-reviewed)
SN - 9783319208060
T3 - Lecture Notes in Computer Science
SP - 141
EP - 150
BT - Symbolic and Quantitative Approaches to Reasoning with Uncertainty: 13th European Conference, ECSQARU 2015, Compiègne, France, July 15-17, 2015. Proceedings
PB - Springer
T2 - 13th European Conference, ECSQARU 2015, Compiègne, France, July 15-17, 2015. Pr
Y2 - 15 July 2015 through 17 July 2015
ER -