hope someone can point me in the right directions here.
I have tested connecting to a local iperf server (location1) over the internet from two other locations (location2 and location3), and also the other way around.
Almost all tests show speeds as expected compared to the actual internet connections they are conencted to but when testing speed to location1 it is not performing very good. What really makes me wonder is that when I try to use the -P switch I can actually get the combined test near the 1gbit mark. Also running iperf3 with the -R switch also gives me fine results between 8-900mbits/s.
Here is the result with one connection
[ 5] 0.00-1.01 sec 19.2 MBytes 160 Mbits/sec
[ 5] 1.01-2.01 sec 13.5 MBytes 113 Mbits/sec
[ 5] 2.01-3.01 sec 21.6 MBytes 181 Mbits/sec
[ 5] 3.01-4.01 sec 18.0 MBytes 151 Mbits/sec
[ 5] 4.01-5.01 sec 23.9 MBytes 200 Mbits/sec
[ 5] 5.01-6.01 sec 18.0 MBytes 151 Mbits/sec
And then when I use the -P and ask for 5 connections this is what I get.
- - - - - - - - - - - - - - - - - - - - - - - - -
[ 5] 11.01-12.01 sec 19.2 MBytes 161 Mbits/sec
[ 7] 11.01-12.01 sec 22.4 MBytes 188 Mbits/sec
[ 9] 11.01-12.01 sec 17.8 MBytes 149 Mbits/sec
[ 11] 11.01-12.01 sec 15.1 MBytes 127 Mbits/sec
[ 13] 11.01-12.01 sec 17.4 MBytes 146 Mbits/sec
[SUM] 11.01-12.01 sec 91.9 MBytes 771 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ 5] 12.01-13.01 sec 14.2 MBytes 120 Mbits/sec
[ 7] 12.01-13.01 sec 15.8 MBytes 132 Mbits/sec
[ 9] 12.01-13.01 sec 16.4 MBytes 137 Mbits/sec
[ 11] 12.01-13.01 sec 15.9 MBytes 133 Mbits/sec
[ 13] 12.01-13.01 sec 13.1 MBytes 110 Mbits/sec
[SUM] 12.01-13.01 sec 75.4 MBytes 632 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
I can also add that if I plug a laptop directly in to the WAN interface it gives me around 900mbits/sec throughput.
Oh and if I run an internetspeedtest from a local client located at location1, I actually gives me internetspeeds arounbd the 8-900mbits/s mark too.
So I really don’t understand this. Why can I get good performance when running 5 parallel test but not one single test and howcome the internetspeedtest shows me fine results.
So if anyone can help me shed some light on this I would really appreciate it. I myself suspect that the problem is located at the “landlords” network equipment or the cabling, but I don’t really have other “evidence” than these tests.
Best
Thomas
