Analysis of SR-IOV in Docker containers using RTT measurements

Cloud computing, a central pillar of modern IT infrastructure, faces constant challenges in provisioning and optimizing network performance, specifically regarding low-latency communication. This study investigates the impact of Single Root I/O Virtualization (SR-IOV) as a critical Quality of Service (QoS) enabler in virtualized environments. Data plane innovative technologies for virtual servers, especially SR-IOV technology, emerged as a promising solution adopted in data centers. When combined with Peripheral Component Interconnect (PCI) Passthrough in Docker environments, SR-IOV promises significant network performance gains. Our rigorous experimental methodology demonstrates that integrating SR-IOV reduces Round-Trip Time (RTT) latency by up to 15 times compared to the traditional Linux based Bridge configuration used in Docker, without significant additional costs. This research is particularly relevant for system administrators, data center professionals, and network traffic engineers, providing them valuable information into optimizing communication in cloud computing environments. By addressing this critical gap in knowledge, our study serves as a practical guide for the effective implementation these emerging technologies for network virtualization. In terms of practical applicability, the results raise valuable insights into the performance and implications of implementing SR-IOV and PCI Passthrough in a Docker environment. As a result, more informed decisions are tailored to the specific requirements of different usage scenarios.