ifconfig on server looks not bad
(UNSPEC)
RX packets 9224067 bytes 4137254364 (3.8 GiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 8374522 bytes 5986028564 (5.5 GiB)
TX errors 0 dropped 287 overruns 0 carrier 0 collisions 0
test outside the tunnel shows following:
[ ID] Interval Transfer Bandwidth
[ 4] 0.0-11.3 sec 10.85 MBytes 10.37 Mbits/sec
[ 4] 0.0-16.2 sec 20.79 MBytes 10.45 Mbits/sec
On Wed, Dec 19, 2018 at 10:38 AM Jan Just Keijser <[email protected]> wrote:
> 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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