The iperf3 bandwidth option doesn't seem to work (or perhaps I'm not using it correctly).
iPerf3 version 3.1.3 on Ubuntu server and Windows client. I'm trying to test radio links at various bandwidths, ranging from 32 Kbps to 400 Kbps, and various packet sizes, ranging from 256 to 1520 bytes. But setting the bandwidth down to the link bandwidth (or lower) doesn't slow the output from the client. Example: In the example below, bandwidth is clearly set at 128K, but resulting bandwidth in 200K. How do I get the iperf client to only send at the specified rate? Thanks, Michael >iperf3 -c 192.168.8.10 -u -l 1472 -b 128K Connecting to host 192.168.8.10, port 5201 [ 4] local 192.168.7.147 port 59396 connected to 192.168.8.10 port 5201 [ ID] Interval Transfer Bandwidth Total Datagrams [ 4] 0.00-1.00 sec 25.9 KBytes 212 Kbits/sec 18 [ 4] 1.00-2.00 sec 24.4 KBytes 200 Kbits/sec 17 [ 4] 2.00-3.00 sec 24.4 KBytes 200 Kbits/sec 17 [ 4] 3.00-4.00 sec 25.9 KBytes 212 Kbits/sec 18 [ 4] 4.00-5.00 sec 21.6 KBytes 177 Kbits/sec 15 [ 4] 5.00-6.00 sec 24.4 KBytes 200 Kbits/sec 17 [ 4] 6.00-7.00 sec 21.6 KBytes 176 Kbits/sec 15 [ 4] 7.00-8.00 sec 24.4 KBytes 200 Kbits/sec 17 [ 4] 8.00-9.00 sec 23.0 KBytes 189 Kbits/sec 16 [ 4] 9.00-10.00 sec 23.0 KBytes 188 Kbits/sec 16 - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bandwidth Jitter Lost/Total Datagrams [ 4] 0.00-10.00 sec 239 KBytes 195 Kbits/sec 0.049 ms 0/165 (0%) [ 4] Sent 165 datagrams iperf Done. ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Iperf-users mailing list Iperf-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/iperf-users
