6-3 利用DPDK加速容器网络关键节点.pptxVIP

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Container Networking Powered byJianfeng Tan, Cunming Liang, Heqing Zhu, Huawei XieAgendaBackgroundDPDK-powered techniquesUsing SR-IOV + DPDK in ContainersConnect containers with user space vswitchUser space network stackDPDK-powered VNFsContainer networking status quoContainerNetwork VirtualizationServiceContainerNetwork VirtualizationServiceLinux KernelLinux KernelAgentMulti-host networkingBut not ready for scenarios like…Container-based VNFsHigh-throughput networking functions likeLB, FW, IDS/IPS, DPI, VPN, pktgen, Proxy, AppFilterLatency-sensitive and jitter-avoid applicationsGame applicationsE-commerce flash salesStock exchange tradingVideo conference Real time network appChallenges of high perf. networkNICTime budgetfor 64BTime budgetfor 1518B10Gb67.2 ns1,230 ns40GbN/A307 ns100GbN/A120 nsNICTime budgetSystem call75 ns/42 nsAtomic ops8.25 nsSpinlock lock/unlock16+ nsL3 miss~80 nsData from /Articles/629155/LWN article, 3GHz CPUFWD 1~2 Mpps per coreOpen Source SoftwareThe Data Plane Development Kit (DPDK) is a set of software libraries for accelerating packet processing workloads on COTS hardware platforms.Customer AdoptionHow do we solve it in BM - DPDKHigh-throughputLow-latencyDeterministicCPU affinityHugepagesUIOPollingLocklessBatchingSSE/AVXCan we leverage DPDK to accelerate Container Networking?VM vs ContainerSR-IOVVIRTIOBAAppnApp0App1…AppnApp0App1…vSwitchVMHOSTHOSTCD…C0C1CnC0C1Cn…vSwitchContainerHOSTHOSTUsing SR-IOV + DPDK in ContainerRequires: device mapping (vfio)High-performance: small pkts line rate with 10 GbEbut# of VFs is limited (64 or 128)Not flexible (by HW)ContainerLinux KernelVM vs ContainerSR-IOVVIRTIOBAAppnApp0App1…AppnApp0App1…vSwitchVMHOSTHOSTCD…C0C1CnC0C1Cn…vSwitchContainerHOSTHOSTConnect containers withuser space vswitchvSwitchContainer/AppDPDKVirtio PMDvirtiovhost Device Emulationvhost-user adapterSocket/tmp/xx.socketPerformance Evaluation - throughputpcap libixgbe kernelNICContainerInstanceixgbe PMDNICContainerInstancevirtioPMDvhost PMDi

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