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| author |   Martin Klozik <martinx.klozik@intel.com> | 2018-02-28 06:34:23 -0800 |
|---|---|---|
| committer | Martin Klozik <martinx.klozik@intel.com> | 2018-03-22 05:43:56 +0000 |
| commit | e9ff0fdf355d26d0c171c6c1137c4beb12561233 (patch) | |
| tree | d202c427858a5e0b0eee6ddc83be35b6b5de5327 /docs/testing/user/configguide | |
| parent | a9655607f7618fd392cf719e8d9ea2dbf6c8dd1c (diff) | |
trex: Add support for burst traffic type
Support for burst traffic type was added into T-Rex. This
traffic type is useful for tests, where a limited number
of frames should be sent through DUT.
JIRA: VSPERF-562
Change-Id: I03b7150e66a0210cce91b20c751b8624c16f951b
Signed-off-by: Martin Klozik <martinx.klozik@intel.com>
Reviewed-by: Al Morton <acmorton@att.com>
Reviewed-by: Christian Trautman <ctrautma@redhat.com>
Reviewed-by: Sridhar Rao <sridhar.rao@spirent.com>
Reviewed-by: Richard Elias <richardx.elias@intel.com>
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 |