On 08.06.2018 14:02, Jan Just Keijser wrote:

try running "iperf" instead of "iperf3" - I've found that iperf3 sucks in more than one way...

Jan, you are right!!! Thank you very much!!!

iperf always show normal network throughput, near 88.7 Mbits/sec

100 Mbits/sec - 88.7 Mbits/sec == 11.3 Mbits/sec.

As I understand, 11.3 Mbits/sec - is overhead,
added by OpenVPN protocol and TCP/IP protocol.

And I can't make this overhead lower without reducing encryption power?

also, what is the latency of your connection? what are the "raw" vs "vpn" ping times?

Latency is low: raw 8.073 ms, vpn 8.272 ms.

P.S.

Resume:

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*People, use iperf for performance testing, because iperf3 is buggy!*
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--
Best regards,
 Gena

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