IOTier: A Virtual Testbed to evaluate systems for IoT environments

摘要

Internet of Things (IoT) is an emerging field characterized by constrained resources, Internet-based communication, arbitrary topologies, geographical distance, and variable operational conditions. Additionally, IoT architectures typically exhibit at least three tiers: IoT devices, Edge gateways, Cloud servers. On top of challenging the design of networked systems, multiple tiers create a web of complexity that makes systems evaluation a challenging endeavor. This paper presents a framework for transforming a cluster of lab machines into a Virtual Testbed that provides views of how systems will perform in a tiered IoT environment. Experiments with constrained resources (CPU, memory, block device, network), multiple tiers, and programmables events are presented and discussed. Their effects are analyzed on the common path operation of micro-benchmarks and distributed key/value store.