+++ /dev/null
-TRex Traffic Generator
-----------------------
-
-Usage
-~~~~~
-
-`TRex traffic generator <https://trex-tgn.cisco.com>`_ is used for majority of
-CSIT performance tests. TRex stateless mode is used to measure NDR and PDR
-throughputs using MLRsearch and to measure maximum transfer rate in MRR tests.
-
-TRex is installed and run on the TG compute node. The typical procedure is:
-
-- TRex configuration is set in its configuration file
-
- ::
-
- $ sudo -E -S sh -c 'cat << EOF > /etc/trex_cfg.yaml
- - version: 2
- c: 15
- limit_memory: 8192
- interfaces: ["${pci1}","${pci2}"]
- port_info:
- - dest_mac: [${dest_mac1}]
- src_mac: [${src_mac1}]
- - dest_mac: [${dest_mac2}]
- src_mac: [${src_mac2}]
- platform :
- master_thread_id: 0
- latency_thread_id: 16
- dual_if:
- - socket: 0
- threads: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15]
- EOF'
-
-- TRex is started in the interactive mode as a background service
-
- ::
-
- $ sh -c 'cd <t-rex-install-dir>/scripts/ && \
- sudo nohup ./t-rex-64 -i --prefix $(hostname) --hdrh --no-scapy-server \
- > /tmp/trex.log 2>&1 &' > /dev/null
-
-- There are traffic streams dynamically prepared for each test, based on traffic
- profiles. The traffic is sent and the statistics obtained using API
- :command:`trex.stl.api.STLClient`.
-
-Measuring Packet Loss
-~~~~~~~~~~~~~~~~~~~~~
-
-Following sequence is followed to measure packet loss:
-
-- Create an instance of STLClient.
-- Connect to the client.
-- Add all streams.
-- Clear statistics.
-- Send the traffic for defined time.
-- Get the statistics.
-
-If there is a warm-up phase required, the traffic is sent also before
-test and the statistics are ignored.
-
-Measuring Latency
-~~~~~~~~~~~~~~~~~
-
-If measurement of latency is requested, two more packet streams are
-created (one for each direction) with TRex flow_stats parameter set to
-STLFlowLatencyStats. In that case, returned statistics will also include
-min/avg/max latency values and encoded HDRHistogram data.
Code Review / csit.git / blobdiff