[Freedombox-discuss] OpenVPN slow
Sunil Mohan Adapa
sunil at medhas.org
Tue Jun 23 19:58:15 BST 2020
On 23/06/20 7:09 am, Paul van der Vlis wrote:
> Hello,
>
> I have installed an OpenVPN client on the Freedombox (hardware from
> Olimex), using the commandline. All traffic from eth1 (homenetwork) goes
> to an OpenVPN server in an virutal machine on the internet. Download is
> about 20 Mbit/s.
>
> client ---- freedombox --- internet --- openvpnserver --- internet
>
> But when I run OpenVPN on the client and not at the Freedombox, I get
> over 80 Mbit/s download.
>
> Do you have any idea why it is so slow running OpenVPN on the
> Freedombox? Is there maybe some kind of limit for processes?
> When I look at top during the test, the load is about 0.48. So not high.
There are no limits on processes we setup in FreedomBox. I can only
think of decryption overhead. What is the CPU usage during this transfer
for the openvpn process? If it is using a single core, we can expect CPU
bottle-necked at 50%.
--
Sunil
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