GoVPP/Performance
From fd.io
GoVPP Performance
GoVPP performance has been measured using the perf-bench example binary on an Ubuntu 16.04 LTS virtual machine running on a laptop with Intel® Core™ i7-6820HQ CPU @ 2.70GHz and 16 GB of RAM. The virtual machine has been assigned all CPU cores and 8 GB of RAM.
The benchmark application is able to measure the performance of both synchronous and asynchronous binary API. As the results of the benchmark show; in case that speed is an issue, asynchronous API is recommended:
| 1 | C application (vppapiclient) - control ping | 762 000 req/second |
| 2 | GoVPP - control ping | 251 878 req/second |
| 3 | GoVPP - l2fib add | 245 560 req/second |
| 4 | GoVPP - interface dump | 210 305 req/second |
| 5 | C application - control ping | 2340 req/second |
| 6 | GoVPP - control ping | 107 req/second |
As the results show, there is quite big difference between the performance of a C test application and the GoVPP. In order to identify the difference and bottlenecks, we:
- performed profiling of the execution of the test 2 (File:Async-prof.pdf) and 6 (File:Sync-prof.pdf).
- performed the measurements from the bare Go application that called vppapiclient library directly, without any further processing in Go, with following results:
| 7 | Go async - no encode & decode, callback once per 100 replies | 761 836 req/second |
| 8 | Go async - no encode & decode | 554 215 req/second |
| 9 | Go async - with encode & decode, no message passing | 284 283 req/second |
| 10 | Go async - with encode & decode, with message passing | 250 861 req/second |
