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HTTP/TCP with WRK
-----------------
`WRK HTTP benchmarking tool <https://github.com/wg/wrk>`_ is used for
TCP/IP and HTTP tests of VPP Host Stack and built-in static HTTP server.
WRK has been chosen as it is capable of generating significant TCP/IP
and HTTP loads by scaling number of threads across multi-core processors.
This in turn enables high scale benchmarking of the VPP Host Stack TCP/IP
and HTTP service including HTTP TCP/IP Connections-Per-Second (CPS) and
HTTP Requests-Per-Second.
The initial tests are designed as follows:
- HTTP and TCP/IP Connections-Per-Second (CPS)
- WRK configured to use 8 threads across 8 cores, 1 thread per core.
- Maximum of 50 concurrent connections across all WRK threads.
- Timeout for server responses set to 5 seconds.
- Test duration is 30 seconds.
- Expected HTTP test sequence:
- Single HTTP GET Request sent per open connection.
- Connection close after valid HTTP reply.
- Resulting flow sequence - 8 packets: >Syn, <Syn-Ack, >Ack, >Req,
<Rep, >Fin, <Fin, >Ack.
- HTTP Requests-Per-Second
- WRK configured to use 8 threads across 8 cores, 1 thread per core.
- Maximum of 50 concurrent connections across all WRK threads.
- Timeout for server responses set to 5 seconds.
- Test duration is 30 seconds.
- Expected HTTP test sequence:
- Multiple HTTP GET Requests sent in sequence per open connection.
- Connection close after set test duration time.
- Resulting flow sequence: >Syn, <Syn-Ack, >Ack, >Req[1], <Rep[1],
.., >Req[n], <Rep[n], >Fin, <Fin, >Ack.
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