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Explore the networking performance challenges when deploying OpenShift Container Platform (OCP) on OpenStack virtual machines in this 35-minute conference talk from DevConf.CZ 2025. Discover why VM-based OCP deployments often suffer from suboptimal networking performance and learn about the root causes, which primarily stem from the lack of Generic Receive Offload (GRO) and Generic Segmentation Offload (GSO) capabilities. Examine ongoing efforts to address these bottlenecks through improvements at both the kernel and virtio levels, with practical insights on achieving up to 5x performance improvements. Gain technical understanding of the underlying infrastructure challenges and solutions for optimizing network performance in virtualized OpenShift environments.
