Scope

Target is to provide a IMP/Gateway speedtest reference implementation to RDK-B community as part of banana Pi R4

Types of speedtests

• IMP/Gateway speed test

  • Between CPE and ISP's Edge Router/Gateway to test upstream and downstream

• Client speed test

  • Between connected client and gateway

Block diagram

Components involved

• Test and diagnostic
• iperf3
  • iperf3 application
  • https://github.com/rdkcentral/meta-dac-sdk-broadband/tree/main/recipes-example/example/iperf3
• USP agent (or) WebPA (parodus,parodus2ccsp)
• T2

Backend ecosystems involved

• Xconf

• Kibana/Elastic or simple json upload with Markers

• USP controller or webpa server 

• Speedtest analytics engine  (An application running on top of Rest API's)

• iperf3 server (Linux machine running with iperf3 server)

RDK-B Customer perspective

• As an RDK-B operator/OEM/SoC how can use my vendor speedtest implementation 

  • [Response - Just replace iperf3 client in RDK-B BPI R4 with your custom vendor implementation - refer orange colored 

• How about server

  • Replace iperf3 server with your actual server - refer orange colored

• Does this cover client speed test

  • No

Technical requirements of gateway speed test

• Speedtest integration technical requirements

State machine design for Bananapi R4

• High level design

  • Initial Setup:
    • User enables speed test by setting Enable_Speedtest=true
    • This is validated through cosa_ip_dml.c
    • Parameter is stored in TR-181
  • Test Execution:
    • User triggers test by setting Run=true
    • System checks Enable_Speedtest status
    • If enabled

      • • /usr/ccsp/tad/speedtest.sh # Launches with lowest priority

  • Download Phase:
    • speedtest-client initiates download
    • BBHM updates tracked in real-time:

      • pStats->TestBytesReceived += s_result;

      • pStats->TotalBytesReceived += s_result;

    • Timing parameters updated:
      • ROMTime (start)
      • TCPOpenRequestTime
      • BOMTime (begin of measurement)
  • Upload Phase:
    • Similar flow to download

      • pStats->TotalBytesSent += s_result;

  • Completion:
    • Final statistics stored in BBHM
    • All parameters accessible via TR-181
    • Run parameter set back to false

  • The entire process is managed by the Test and Diagnostics framework, with:

    • Real-time statistics collection
    • Proper error handling
    • Persistent storage of results
    • TR-181 parameter updates throughout the test

• Low level design

  • 

  • simple flow

    • 

  • Assumed output

    • iperf3 -c 192.168.2.151 -t 60 -b 100M -P 4

      root@RaspberryPi-Gateway:/# tail -n 25 /var/log/iperf3log.log [ 5] 0.00-60.00 sec 169 MBytes 23.6 Mbits/sec receiver [ 7] 0.00-60.00 sec 173 MBytes 24.2 Mbits/sec 150 sender [ 7] 0.00-60.00 sec 173 MBytes 24.2 Mbits/sec receiver [ 9] 0.00-60.00 sec 167 MBytes 23.3 Mbits/sec 152 sender [ 9] 0.00-60.00 sec 167 MBytes 23.3 Mbits/sec receiver [ 11] 0.00-60.00 sec 164 MBytes 23.0 Mbits/sec 159 sender [ 11] 0.00-60.00 sec 164 MBytes 23.0 Mbits/sec receiver [SUM] 0.00-60.00 sec 674 MBytes 94.2 Mbits/sec 621 sender [SUM] 0.00-60.00 sec 673 MBytes 94.1 Mbits/sec receiver

  • supported speedtest dml's 

    • 

Source code repo

• https://github.com/cpokuru/rdk-speedtest-cli
• https://github.com/cpokuru/yocto-staging/tree/main/recipes-benchmark

Reference

• Performance speed tests
• iperf3 application
• Reference comcast(Not to be shared with community) - https://etwiki.sys.comcast.net/display/SH/Gateway+Speedtest

Plan

• Immediate

  1. Implement wrapper on top of iperf3 - rdk-speedtest-cli  - https://github.com/cpokuru/rdk-speedtest-cli/tree/develop
  2. update speedtest.sh to invoke rdk-speedtest-cli 
  3. invoke speedtest using speedtest dml's in test and diag from webpa
  4. Store test results in file & upload file to remote machine using curl
  5. Update speedtest status & the corresponding dmls'

• Next

  • Investigate on upload/download dml's to update data.pls refer design

FAQ's

• TBD

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