Performance¶

Overview¶

One of the benefits of FD.io VPP is high performance on relatively low-power computing, this performance is based on the following features:

A high-performance user-space network stack designed for commodity hardware:
- L2, L3 and L4 features and encapsulations.
Optimized packet interfaces supporting a multitude of use cases:
- An integrated vhost-user backend for high speed VM-to-VM connectivity
- An integrated memif container backend for high speed Container-to-Container connectivity
- An integrated vhost based interface to punt packets to the Linux Kernel
The same optimized code-paths run execute on the host, and inside VMs and Linux containers
Leverages best-of-breed open source driver technology: DPDK
Tested at scale; linear core scaling, tested with millions of flows and mac addresses

These features have been designed to take full advantage of common micro-processor optimization techniques, such as:

Reducing cache and TLS misses by processing packets in vectors
Realizing IPC gains with vector instructions such as: SSE, AVX and NEON
Eliminating mode switching, context switches and blocking, to always be doing useful work
Cache-lined aliged buffers for cache and memory efficiency

These are some of the packet throughput graphs for FD.io VPP 18.04 from the CSIT 18.04 benchmarking report:

The FD.io CSIT is implemented with below platforms:

These are FD.io Continuous System Integration and Testing (CSIT)’s documentation links: