Flow Classification Optimizations in DPDK

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Agenda Flow Classification in DPDK Cuckoo Hashing for Optimized Flow Table Design Using Intel Transactional Synchronization Extensions (TSX) for scaling Insert performance Using Intel AVX instructions for scaling lookup performance Research Proof of Concept: 2 level lookup for OVS Megaflow Cache
Memory Flow Classification on Network Appliances vs General Purpose Server H/W 3 Flow Flow Flow Flow Target Target Target Target Flow Flow Flow Flow Action Action Action Action Flow Flow Flow Flow In Out In Out In Out In Out Flow Flow Flow Flow Target Target Target Target Flow Flow Flow Flow Action Action Action Action Flow Flow Flow Flow In Out In Out In Out In Out NFV Flow Classification Implemented on General Purpose Processors Hypervisor (e.g. ESXi, KVM,.. etc.) C C C C TEM/OEM Proprietary OS ASIC, DSP, FPGA, ASSP Monolithic Purpose-built Boxes • Network appliances use purpose-built H/W & ASICs (e.g., TCAM) for flow classification • Cost & power consumption are limiting factors to support large number of flows $ Lx NIC $ LLC $ Lx • General purpose processors with Cache/memory hierarchy can support much larger flow tables. • Multicores architecture provide a scalable competitive flow classification performance. $ Lx NIC $ LLC $ Lx Networking VMs on Standard Servers Memory
Page 1: Flow Classification Optimizations i
Page 5 and 6: DPDK Framework Network Functions (C
Page 7 and 8: Cuckoo Hashing High Level Overview
Page 9 and 10: Code Snippet for RTE-hash API s
Page 11 and 12: Build Flow-Table Insert Performance
Page 13 and 14: Insert Rate (Million ins/sec) Summa
Page 15 and 16: Flow-Table Lookup Performance Optim
Page 17 and 18: Code Snippet for RTE-hash with AVX
Page 19 and 20: POC: Open vSwitch Flow Lookup Packe
Page 21 and 22: Bloom Filter as 1 st Level of Indir
Page 23 and 24: Legal Disclaimers No license (expre

Flow Classification Optimizations in DPDK

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