Evaluating Concurrent Executions of Multiple Function-as-a-Service Runtimes with MicroVM

Serverless computing and public Function-as-a-Service (FaaS) systems are gaining significant attention because they help easily build a highly available system. With recent advances in micro virtual machines (microVM), the internal architecture of FaaS systems substantially changes. This paper focuses on a thorough investigation of the recent improvement in public FaaS systems concerning numerous concurrent executions. The adoption of microVM has changed the nature of FaaS, especially for runtime reservations. As a result, the performance degradation has decreased significantly compared to the previous generation FaaS, as shown in the experiment.