On 18/12/18 08:40, Tamir Khason wrote:
VPN server is server
TCP window size: 85.3 KByte (default)
------------------------------------------------------------
[ 4] local 10.8.0.1 port 5001 connected with 10.8.0.2 port 43132
[ ID] Interval Transfer Bandwidth
[ 4] 0.0-11.0 sec 1.64 MBytes 1.25 Mbits/sec
[ 4] local *.*.*.* port 5001 connected with *.*.*.* port 47572
[ 4] 0.0-16.0 sec 2.61 MBytes 1.37 Mbits/sec
VPN client is server
TCP window size: 85.3 KByte (default)
------------------------------------------------------------
[ 4] local 10.8.0.2 port 5001 connected with 10.8.0.1 port 54758
[ ID] Interval Transfer Bandwidth
[ 4] 0.0-10.4 sec 6.00 MBytes 4.84 Mbits/sec
As for the system performance
real 0m10.569s
user 0m7.482s
sys 0m0.017s
So it does look like the VPN is the bottleneck - although you are seeing
numbers here that are even less than your original report.
The tricky thing about iperf is that it measures a "push", and not a
"pull", i.e when the VPN client is the iperf *server* you measure the
download speed to the client. Still. 4.84 Mbps is far less than the 8-10
Mbps you said earlier.
It would also be interesting to see if there is any packet loss
during/after the transfer - what does 'ifconfig tun0' show ?
Can you do the same measurement *outside* of the tunnel (i.e. public IP
to public IP) ?
HTH,
JJK
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