Abstract
We study the impact of synchronous and asynchronous monitoring
instrumentation on runtime overheads in the context of a runtime verification
framework for actor-based systems. We show that, in such a context,
asynchronous monitoring incurs substantially lower overhead costs. We also show
how, for certain properties that require synchronous monitoring, a hybrid
approach can be used that ensures timely violation detections for the important
events while, at the same time, incurring lower overhead costs that are closer
to those of an asynchronous instrumentation.
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