Not sure on iperf3.
iperf 2.0.11 <https://sourceforge.net/projects/iperf2/?source=navbar>
supports isochronous traffic to better emulate things like video streams
and will burst packets. It requires ./configure --enable-isochronous
before make.
The client command line option is --isochronous=<n fps>:<mean>,<variance>
and optionally --ipg <n milliseconds> (defaults to 5 us)
A way to send a burst every 1/60 seconds is something like
--isochronous=60:20m,0
[root@localhost iperf2-code]# iperf -c 192.168.1.4 -u -i 1 -e
--isochronous=60:20m,0
------------------------------------------------------------
Client connecting to 192.168.1.4, UDP port 5001 with pid 25669
UDP isochronous: 60 frames/sec mean=20.0 Mbit/s, variance=0.00 bit/s,
Period/IPG=16.67/0.005 ms
UDP buffer size: 208 KByte (default)
------------------------------------------------------------
[ 3] local 192.168.1.1 port 49458 connected with 192.168.1.4 port 5001
[ ID] Interval Transfer Bandwidth Write/Err PPS
frames:tx/missed/slips
[ 3] 0.00-1.00 sec 2.39 MBytes 20.0 Mbits/sec 1741/0 1741 pps
60/0/0
[ 3] 1.00-2.00 sec 2.38 MBytes 20.0 Mbits/sec 1740/0 1740 pps
60/0/0
[ 3] 2.00-3.00 sec 2.39 MBytes 20.0 Mbits/sec 1741/0 1741 pps
60/0/0
[ 3] 3.00-4.00 sec 2.39 MBytes 20.0 Mbits/sec 1741/0 1741 pps
60/0/0
[ 3] 4.00-5.00 sec 2.38 MBytes 20.0 Mbits/sec 1740/0 1740 pps
60/0/0
[ 3] 5.00-6.00 sec 2.39 MBytes 20.0 Mbits/sec 1744/0 1744 pps
60/0/0
[ 3] 6.00-7.00 sec 2.42 MBytes 20.3 Mbits/sec 1763/0 1734 pps
61/0/0
[ 3] 7.00-8.00 sec 2.38 MBytes 20.0 Mbits/sec 1740/0 1740 pps
60/0/0
[ 3] 8.00-9.00 sec 2.38 MBytes 20.0 Mbits/sec 1740/0 1740 pps
60/0/0
[ 3] 0.00-10.02 sec 23.9 MBytes 20.0 Mbits/sec 17429/0 1740 pps
600/0/0
[ 3] Sent 17429 datagrams
[ 3] Server Report:
[ 3] 0.0-10.0 sec 23.9 MBytes 20.0 Mbits/sec 62.411 ms 0/17429 (0%)
Bob
On Thu, May 24, 2018 at 3:02 PM, Ashish Kashinath <akash...@eng.ucsd.edu>
wrote:
> Hi iperf-users. I am trying to use iperf to generate periodic stream of
> packets.
>
> Presently, I am using the command:
>
> iperf3 -c 192.168.1.60 -u -i 1 -b 750M -l 1K -t 600 to generate traffic of
> bandwidth 750Mb per second for 600 seconds.
>
> I am enabling UDP mode with a flag of -u and using a datagram size of 1KB
> using -l switch.
>
> Would this work in burst mode or would it generate a periodic stream of
> packets?
>
> --
> Regards,
> Ashish Kashinath
>
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