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RDMA Usage Comparison

This section compares RDMA network usage across various CNIs (Container Network Interfaces).

Functionality Comparison Passthrough via MACVLAN/IPVLAN + RoCE Passthrough via SRIOV + RoCE Passthrough via SRIOV + InfiniBand
Performance Good Very Good Best
Number of pods supported per node Unlimited Number of split Virtual Functions on a restricted SmartNIC Number of split Virtual Functions on a restricted SmartNIC
Switch Ethernet Switch Ethernet Switch InfiniBand Switch
Cost Low Medium High
Stability Good Very Good Best
Bandwidth Isolation Fair Good Good

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