Hi, On Thu, Nov 09, 2017 at 01:21:56PM -0500, Selva wrote: > So I do feel that high latency under load is not a fundamental limitation > -- probably > openvpn with --proto tcp is not trying hard to manage the queue smartly?
It isn't. It's just stuffing packets into the tcp stream as they come
out the tun/tap fd.
What we *could* do is make the socket buffer much smaller and have a
larger internal queue in openvpn, and then do smart stuff, like "move
small packets in front of full-sized TCP packets", "random early drop"
and all that stuff people have done research on over the last 20 years.
But that's quite a bit of work...
gert
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