Containing the Hype

摘要: Containers, or OS-based virtualization, have seen a recent resurgence in deployment. The term "container" is nearly synonymous with "lightweight virtualization", despite remarkable dearth of careful measurements supporting this notion. This paper contributes comparative and analysis both containers hardware virtual machines where the functionality technologies intersects. focuses on two important issues for cloud computing: density (guests per physical host) start-up latency (for responding to load spikes). We conclude that overall highly dependent most demanded resource. In many dimensions there are no significant differences, other VMs significantly higher overheads. A particular contribution first detailed biggest difference---memory footprint---and opportunities reduce overhead.