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Re: [Openvpn-users] Scalability?


  • Subject: Re: [Openvpn-users] Scalability?
  • From: Jamie Lokier <jamie@xxxxxxxxxxxxx>
  • Date: Tue, 1 Mar 2005 15:15:02 +0000

Mario Gonzalez wrote:
> The application is more like telnet than gigabyte file transfers.
> Something like 5k/hour/client. There are no serious peaks except for
> restart scenarios, where all the clients are re-connecting.
> 
> What initially concerns us are the requirements for handling all the
> certificates.

That concerns me too (I have a similar situation but only 500 clients,
and no I haven't tested it yet).

With 10^4 clients, if you have a 30 second keepalive than that's 6000
packets/sec just for keepalive (3000 in, 3000 out).

Re-keying 10000 clients every hour is one every 2 seconds, which
should be fine on a modern server provided they're spread out.  (But:
I haven't tried it; that's a _guess_).  If they all try to connect at
the same time...?

-- Jamie

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