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Real-Time FaaS: Towards a Latency Bounded Serverless Cloud
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DOI：10.1109/TCC.2022.3151469.png)
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Today, Function-as-a-Service is the most promising concept of serverless cloud computing. It makes possible for developers to focus on application development without any systemmanagement effort: FaaS ensures resource allocation, fast response time, schedulability, scalability, resiliency, and upgradability. Applications of 5G, IoT, and Industry 4.0 raise the idea to open cloud-edge computing infrastructures for time-critical applications too, i.e., there is a strong desire to pose real-time requirements for computing systems like FaaS. However, multi-node systems make real-time scheduling significantly complex since guaranteeing real-time task execution and communication is challenging even on one computing node with multi-core processors. In this paper, we present an analytical model and a heuristic partitioning scheduling algorithmsuitable for real-time FaaS platforms of multi-node clusters. We show that our task scheduling heuristics could outperformexisting algorithms by 55%. Furthermore, we propose three conceptual designs to enable the necessary real-time communications. We present the architecture of the envisioned real-time FaaS platform, emphasize its benefits and the requirements for the underlying network and nodes, and survey the related work that could meet these demands.
Keyword:
Real-time scheduling
real-time cloud
real-time FaaS
partitioned scheduling
partitioned-EDF
heterogeneous multiprocessor
multi-node and multiprocessor system
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1.8K
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