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baidu / dperf

dperf is a 100Gbps network load tester.
https://dperf.org
Apache License 2.0
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Questoin about tx-pps #497

Closed winnie022 closed 1 month ago

winnie022 commented 1 month ago

Hello,

I am new to dperf. Thank you for maintaining great tool.

  1. I would like to test 1 MPPS, 2 MPPS, etc by gradually increasing the rate. Is it possible to control pps rate on TX side? I am currently explore flood under performance/tx-pps and seems like cc can control it. There are multiple parameters like cc, cps, and keepalive, slow_start. Even udp has slow start and keepalive features? Is tx-pps the best option to test it? I am using dperf on TX side and testpmd on RX side. (one direction)

  2. If I can measure round-trip pps (bi-directional) to check packet loss, what is the best option in dperf and which one should I take a look under test directory?

  3. Are there any docs or articles to understand these parameters in details?

Thanks,

pengjianzhang commented 1 month ago

Hello,

I am new to dperf. Thank you for maintaining great tool.

  1. I would like to test 1 MPPS, 2 MPPS, etc by gradually increasing the rate. Is it possible to control pps rate on TX side?
  yes. pps = cc *  ( 1s / keepalive-interval)

I am currently explore flood under performance/tx-pps and seems like cc can control it. There are multiple parameters like cc, cps, and keepalive, slow_start. Even udp has slow start and keepalive features?

   see more about keepalive  https://dperf.org/doc/html/configuration#section5

Is tx-pps the best option to test it?

  use 'cc', 'keepalive', etc to control it.

I am using dperf on TX side and testpmd on RX side. (one direction)

  please use dperf at both side. 
  if you only test tx-pps,  you should use 'flood' in client.conf, and server.conf use a diffrent 'listen port', so dperf server will drop all the recving packets from dperf client.
  1. If I can measure round-trip pps (bi-directional) to check packet loss, what is the best option in dperf and which one should I take a look under test directory?
  dperf.org
  1. Are there any docs or articles to understand these parameters in details?

dperf.org

Thanks,