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Cyclonedds tools

install
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sudo apt install cyclonedds-tools

ddsperf

Measures primarily data throughput and latency of the cyclone-based applications within the network or within the same board,

Benchmarking Tools

Tip

Network throughput is a measure of how much data is successfully transferred from one point to another in a given period of time across a network. It's typically expressed in bits per second (bps)

Tip

Latency is the time delay wheen the packet is send and when it is received.

using ping whe measure to round trip latency for a packet

terminal 1
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ddsperf pub size 1k 1Hz
terminal 2
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ddsperf sub
#

[15894] 1.000  size 1024 total 1 lost 0 delta 1 lost 0 rate 0.00 kS/s 0.01 Mb/s (0.00 kS/s 0.00 Mb/s)
[15894] 2.000  size 1024 total 2 lost 0 delta 1 lost 0 rate 0.00 kS/s 0.01 Mb/s (0.00 kS/s 0.00 Mb/s)
[15894] 3.000  size 1024 total 3 lost 0 delta 1 lost 0 rate 0.00 kS/s 0.01 Mb/s (0.00 kS/s 0.00 Mb/s)
[15894] 4.000  size 1024 total 4 lost 0 delta 1 lost 0 rate 0.00 kS/s 0.01 Mb/s (0.00 kS/s 0.00 Mb/s)
[15894] 4.000  rss:6.4MB vcsw:11 ivcsw:0 ddsperf:1%+0%
  • pid
  • time
  • size of the data involved in this test (For example, 1024 bytes, which is the “size 1k” defined in the pub command).
  • total packets received .
  • The total packets lost (For example, 0).
  • delta: the packets received in a 1 second reporting
  • The packets lost in a 1 second report period (For example, 0).
  • The number of samples processed by the Sub application in 1s (unit KS/s is 1000 samples per second).
publisher
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ddsperf pub size 1k 10Hz

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ddsperf sub
[15916] participant ubuntu:15916: new (self)
[15916] participant dev:5138: new
[15916] 1.001  size 1024 total 10 lost 0 delta 10 lost 0 rate 0.01 kS/s 0.08 Mb/s (0.00 kS/s 0.01 Mb/s)
[15916] 2.000  size 1024 total 20 lost 0 delta 10 lost 0 rate 0.01 kS/s 0.08 Mb/s (0.00 kS/s 0.02 Mb/s)
[15916] 3.000  size 1024 total 30 lost 0 delta 10 lost 0 rate 0.01 kS/s 0.08 Mb/s (0.00 kS/s 0.02 Mb/s)
[15916] 4.000  size 1024 total 40 lost 0 delta 10 lost 0 rate 0.01 kS/s 0.08 Mb/s (0.00 kS/s 0.03 Mb/s)
[15916] 4.000  rss:6.5MB vcsw:28 ivcsw:1 ddsperf:0%+1%

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[15916] 4.000  rss:6.5MB vcsw:28 ivcsw:1 ddsperf:0%+1%
  • rss: process memory usage
  • vcsw: context switch (idle)
  • ivcsw: context switch (block)
  • ddsperf: cpu user space, cpu kernel space

using iperf3

iperf (or more commonly iperf3) is a powerful network testing tool used to measure:

  • Network throughput (bandwidth)
  • Data transfer rate (in both directions)
  • Packet loss (UDP mode)
  • Jitter (UDP mode)
  • Retransmissions (TCP mode)
install
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sudo apt install iperf3
run server
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iperf3 -s
run client
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iperf3 -c <server-ip>

#
# send udp packet at 10Mbps
iperf3 -c 192.168.1.100 -u -b 10M
Measure Throughput
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# run server

# run client
iperf3 -c 192.168.1.100

# result
[ ID] Interval           Transfer     Bitrate         Retr  Cwnd
[  5]   0.00-1.00   sec   113 MBytes   952 Mbits/sec    0    329 KBytes
  • Transfer: Total amount of data send during the duration
  • Bitrate: average speed over the duration