[Cerowrt-devel] MTU question

Valdis.Kletnieks at vt.edu Valdis.Kletnieks at vt.edu
Thu Feb 12 17:30:04 EST 2015

On Thu, 12 Feb 2015 13:46:47 -0800, David Lang said:
> It occured to me as I was driving home last night that if the APs are working to
> combine packets into a single transmission due to the high overhead of
> independent transmissions, would it possibly improve wifi performance to just
> configure a larger MTU?
> Has anyone done any experimentation in this area?

It tends to totally ruin latency.  Go read up on why things like ssh turn off
Nagle.  I have no reason to expect the same "leaving stuff in a buffer while we
wait for more data to make a full packet" will work any better on Wifi.

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