Performance Modeling and Benchmarking of Event-Based ... - DVS

7.1. ONGOING AND FUTURE WORK 139
them accurate. Therefore, we propose to work on self-adaptive EBS based on the presented
modeling methodology. Such systems should dynamically adjust their configuration to ensure
that QoS requirements are continuously met. They should generate performance models at
run-time based on monitoring data and, using these models, predict the system performance
under the expected workload and adapt itself to guarantee specified QoS levels. Since performance
analysis should be carried out on-the-fly, it is essential that the process of generating
and analyzing the models is completely automated and efficient. Such a self-adaptive EBS requires
novel techniques for system behavior prediction, monitoring and runtime measurements
to supervise its own QoS status, to identify possible problems such as bottlenecks and to react
to them autonomously, e.g., by automatically allocating resources. Another research challenge
is to integrate all QoS attributes in the models and to optimize these models, e.g., regarding
resource usage of the system given a certain QoS level.