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LF_DPDK17_Serverless DPDK - How SmartNIC resident DPDK Accelerates Packet Processing
- 1. DPDK Summit - San Jose – 2017 NishantLodha, Cavium Inc “Serverless” DPDK #DPDKSummit
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- 3. 3#DPDKSummit Agenda u SmartNIC Market Share and Projections u Current and Emerging SmartNIC Use Cases uChallenges with current generation SmartNICs u Accelerating Next Gen SmartNICs with DPDK u Nirvana?
- 4. 4 ©2017 Cavium Proprietaryand Confidential What is a SmartNIC? Common Features § Stateless Offloads § Tunneling/Overlays: VXLAN, NVGRE, GENEVE § SR-IOV § DPDK PMDs Standard NIC § Speed transitions 10G/25G/40G/50G/100G § General purpose offloads - RDMA, Storage § Hardwired or Micro-coded or mix Smart NICs § Multi-core / Network Processor based Adapters § Crypto Accelerator w/ IPSEC / SSL § OVS Offload, Business Application offload § Customer Programmable SmartNIC Standard NIC
- 5. 5 ©2017 Cavium Proprietaryand Confidential SmartNIC Market Size: 2016-2021 (Network Acceleration) Cavium Built Model for 10GbE & Higher Speeds $- $200 $400 $600 $800 $1,000 $1,200 $1,400 $1,600 $1,800 Smart NIC L2 NIC Smart NIC L2 NIC Smart NIC L2 NIC Smart NIC L2 NIC Smart NIC L2 NIC Smart NIC L2 NIC 2016 2017 2018 2019 2020 2021 $M T1 MDC T2 Cloud/Telco Enteprise/Private Storage $768 $942 $1,460 $1,576 $72 $101 $240 $573 $1,248 $1,530 $141 $381
- 6. 6 SmartNIC is a platform for Innovation Key Markets All server computeresources need to have a revenue tie-in
- 7. 7 OVS + IPsec Performance Benchmark Benchmarking Test Setup Plain Text Encrypted Text 0 2 4 6 8 10 12 14 Hostbased OVS + IPsec SmartNIC OVS + IPsec Numberofcoresused CPU Usage in the host Available Used Performance 0 1 2 3 4 5 6 7 8 9 10 64 Bytes 512 Bytes 1024 Bytes 1400 Bytes ThroughputinGbps message Size Host based OVS + IPsec SmartNIC OVS + IPsec
- 8. 8 Current Approach toOVS Offload on SmartNIC • Proprietary: SimpleExec - Run to completion model, SDK • Deployment Model: Packaged solution or SDK • Implications: Platform specific skills, customer application porting, time to market, ecosystem • Need to simplify the SmartNIC • Require a new Networking Data Plane Challenges x86 Userspace x86 Kernel PCI Express Slot SmartNIC X86 Userspace x86 kernel OVS-DB Server OVSDB port 1 port 2 PF PF eth0 eth1 Accelerated Data Path vSwitchd VM Apps VM Apps OVS Data path VM DPDK Apps VM DPDK Apps VM Apps Controller Server SmartNIC accelerates the OVS Data path and restores CPU cores back to the server
- 9. 9 ©2017 Cavium Proprietaryand Confidential Open Architecture Upstream Linux Standard DPDK Next Gen SmartNIC DPDK for the Networking Dataplane MIPS Based Architecture SDK Sample Applications ARMv8 Cores Standard Linux DPDK Current Gen SmartNIC MIPS ARM
- 10. 10 ©2017 Cavium Proprietaryand Confidential u DPDK is a “Proven” networking dataplane u Majority of networking applications on x86 are written for DPDK u Performance; Innovation; Licensing Why DPDK? u SmartNICs growth in Telco / NFV Use Cases u ARMv8 ecosystem enables DPDK acceleration u BYOA - Path of least resistance – offloading NFV apps to SmartNICs
- 11. 11 ©2017 Cavium Proprietaryand Confidential Before and After mgmt0 PMD PMD PMD PMD Kernel User HW OffloadBlocks OVS-DPDK vhost-user
- 12. 12 ©2017 Cavium Proprietaryand Confidential Taking DPDK to a embedded processor? • Limited compute and memory resources • Polling/Hogging • Fixed Power Envelope DPDK Version Dependency for NFV Apps A simplified way of leveraging HW provided offloads Performance? Potential Challenges
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