On Fri, 10 Aug 2018, Rosen Penev wrote:
My question is not really how to fix it. I already know that. I just
got the feeling that bypassing parts of the linux network stack would
result in less buffering.
On the OpenWrt configuration page for the "software flow offload":
"Experimental feature. Not fully compatible with QoS/SQM."
I don't know exactly what it does, it reduces amount of CPU cycles needed
to forward packets in an already established flow it seems, but I'd
imagine that it might very well bypass some of the scheduling code which
could explain what you're seeing. So you might get faster forwarding but
less AQM.
So if your device isn't fast enough to keep up with your total Internet
access speed, then this might be a good thing. If your device is faster
than what's needed, then you'd better spend the cycles on getting good AQM
instead of freeing up more CPU that isn't used for anything anyway.
--
Mikael Abrahamsson email: [email protected]
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