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Diffstat (limited to 'docs/testing/user/configguide')
| -rw-r--r-- | docs/testing/user/configguide/trafficgen.rst | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/docs/testing/user/configguide/trafficgen.rst b/docs/testing/user/configguide/trafficgen.rst index 52b1b4a5..c174af0a 100644 --- a/docs/testing/user/configguide/trafficgen.rst +++ b/docs/testing/user/configguide/trafficgen.rst @@ -39,6 +39,7 @@ and is configured as follows: TRAFFIC = { 'traffic_type' : 'rfc2544_throughput', 'frame_rate' : 100, + 'burst_size' : 100, 'bidir' : 'True', # will be passed as string in title format to tgen 'multistream' : 0, 'stream_type' : 'L4', @@ -857,6 +858,21 @@ place. This can be adjusted with the following configurations: TRAFFICGEN_TREX_LEARNING_MODE=True TRAFFICGEN_TREX_LEARNING_DURATION=5 +Latency measurements have impact on T-Rex performance. Thus vswitchperf uses a separate +latency stream for each direction with limited speed. This workaround is used for RFC2544 +**Throughput** and **Continuous** traffic types. In case of **Burst** traffic type, +the latency statistics are measured for all frames in the burst. Collection of latency +statistics is driven by configuration option ``TRAFFICGEN_TREX_LATENCY_PPS`` as follows: + + * value ``0`` - disables latency measurements + * non zero integer value - enables latency measurements; In case of Throughput + and Continuous traffic types, it specifies a speed of latency specific stream + in PPS. In case of burst traffic type, it enables latency measurements for all frames. + +.. code-block:: console + + TRAFFICGEN_TREX_LATENCY_PPS = 1000 + SR-IOV and Multistream layer 2 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ T-Rex by default only accepts packets on the receive side if the destination mac matches the |