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Bidirectional tests
When you use the '-d' or '-r' options for bidirectional testing, I find that you may need to pick a port other than the default [5001] as the server is listening on port 5001. In the below examples, I picked random ports above 1024 were chosen.
I We found that using the same port (with the -L) option in rapid succession doesn't seem to work. I don't know what the deal is with that, I assume it is a server end FW issue that times out.
The simultaneous test results are a little may be difficult to read. It looks like only TCP is working. UDP doesn't appear to be working even after upgrading to iperf-2.0.4 [there were supposed to be some bug fixes]. It appears to be a problem in the official distribution according to recent ubuntu forums.
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If you do not pick a port it will fail:
| No Format |
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C:\>iperf -c iperf.wiscnet.net -i1 -d |
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bind failed: Permission denied |
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Simultaneous,
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local
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port
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(-L) 20000:
| No Format |
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C:\>iperf -c iperf.wiscnet.net -i1 -d -L 20000 |
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------------------------------------------------------------ |
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Server listening on TCP port 20000 |
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TCP window size: 8.00 KByte (default) |
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------------------------------------------------------------ |
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------------------------------------------------------------ |
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Client connecting to iperf.wiscnet.net, TCP port 5001 |
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TCP window size: 8.00 KByte (default) |
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------------------------------------------------------------ |
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[1848] local 146.151.208.16 port 2242 connected with iperf.wiscnet.net port 5001 |
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[1820] local 146.151.208.16 port 20000 connected with iperf.wiscnet.net port 20000 |
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[ ID] Interval Transfer Bandwidth |
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[1848] 0.0- 1.0 sec 1.03 MBytes 8.65 Mbits/sec |
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[1820] 0.0- 1.0 sec 1.05 MBytes 8.83 Mbits/sec |
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[1848] 1.0- 2.0 sec 1.09 MBytes 9.11 Mbits/sec |
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[1820] 1.0- 2.0 sec 911 KBytes 7.46 Mbits/sec |
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[1848] 2.0- 3.0 sec 976 KBytes 8.00 Mbits/sec |
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[1820] 2.0- 3.0 sec 1.05 MBytes 8.79 Mbits/sec |
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[1820] 3.0- 4.0 sec 1.33 MBytes 11.1 Mbits/sec |
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[1848] 3.0- 4.0 sec 672 KBytes 5.51 Mbits/sec |
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[1848] 4.0- 5.0 sec 712 KBytes 5.83 Mbits/sec |
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[1820] 4.0- 5.0 sec 1.38 MBytes 11.5 Mbits/sec |
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[1848] 5.0- 6.0 sec 624 KBytes 5.11 Mbits/sec |
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[1820] 5.0- 6.0 sec 1.42 MBytes 11.9 Mbits/sec |
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[1848] 6.0- 7.0 sec 584 KBytes 4.78 Mbits/sec |
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[1820] 6.0- 7.0 sec 1.53 MBytes 12.9 Mbits/sec |
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[1848] 7.0- 8.0 sec 832 KBytes 6.82 Mbits/sec |
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[1820] 7.0- 8.0 sec 1.26 MBytes 10.5 Mbits/sec |
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[1848] 8.0- 9.0 sec 616 KBytes 5.05 Mbits/sec |
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[1820] 8.0- 9.0 sec 1.49 MBytes 12.5 Mbits/sec |
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[1848] 9.0-10.0 sec 584 KBytes 4.78 Mbits/sec |
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[1820] 9.0-10.0 sec 1.51 MBytes 12.7 Mbits/sec |
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[ ID] Interval Transfer Bandwidth |
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[1848] 0.0-10.0 sec 7.59 MBytes 6.34 Mbits/sec |
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[1820] 0.0-10.1 sec 13.1 MBytes 10.9 Mbits/sec |
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Back to back test (-r). The server to client test comes AFTER the client to server test:
| No Format |
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C:\Documents and Settings\m7h>iperf -c iperf.wiscnet.net -i1 -r -L 60000 |
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------------------------------------------------------------ |
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Server listening on TCP port 60000 |
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TCP window size: 8.00 KByte (default) |
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------------------------------------------------------------ |
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------------------------------------------------------------ |
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Client connecting to iperf.wiscnet.net, TCP port 5001 |
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TCP window size: 8.00 KByte (default) |
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------------------------------------------------------------ |
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[1848] local 146.151.208.16 port 2365 connected with iperf.wiscnet.net port 5001 |
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[ ID] Interval Transfer Bandwidth |
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[1848] 0.0- 1.0 sec 2.02 MBytes 17.0 Mbits/sec |
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[1848] 1.0- 2.0 sec 1.91 MBytes 16.1 Mbits/sec |
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[1848] 2.0- 3.0 sec 1.92 MBytes 16.1 Mbits/sec |
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[1848] 3.0- 4.0 sec 1.92 MBytes 16.1 Mbits/sec |
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[1848] 4.0- 5.0 sec 1.92 MBytes 16.1 Mbits/sec |
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[1848] 5.0- 6.0 sec 1.95 MBytes 16.3 Mbits/sec |
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[1848] 6.0- 7.0 sec 1.98 MBytes 16.6 Mbits/sec |
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[1848] 7.0- 8.0 sec 1.95 MBytes 16.4 Mbits/sec |
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[1848] 8.0- 9.0 sec 1.89 MBytes 15.9 Mbits/sec |
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[1848] 9.0-10.0 sec 2.04 MBytes 17.1 Mbits/sec |
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[1848] 0.0-10.0 sec 19.5 MBytes 16.4 Mbits/sec |
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[1824] local 146.151.208.16 port 60000 connected with iperf.wiscnet.net port 60000 |
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[ ID] Interval Transfer Bandwidth |
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[1824] 0.0- 1.0 sec 2.22 MBytes 18.6 Mbits/sec |
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[1824] 1.0- 2.0 sec 2.18 MBytes 18.3 Mbits/sec |
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[1824] 2.0- 3.0 sec 2.17 MBytes 18.2 Mbits/sec |
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[1824] 3.0- 4.0 sec 2.22 MBytes 18.6 Mbits/sec |
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[1824] 4.0- 5.0 sec 2.01 MBytes 16.9 Mbits/sec |
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[1824] 5.0- 6.0 sec 2.16 MBytes 18.1 Mbits/sec |
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[1824] 6.0- 7.0 sec 2.09 MBytes 17.5 Mbits/sec |
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[1824] 7.0- 8.0 sec 2.07 MBytes 17.4 Mbits/sec |
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[1824] 8.0- 9.0 sec 2.16 MBytes 18.1 Mbits/sec |
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[1824] 9.0-10.0 sec 2.13 MBytes 17.9 Mbits/sec |
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[1824] 0.0-10.1 sec 21.6 MBytes 17.9 Mbits/sec |