[e2e] How popular is TCP delayed acknowledgement used ?

[Spencer Dawkins]

Since you didn't identify a link technology of interest, I would
agree with Andi, with one caveat - delayed ACK timers tend to be
about 200 ms on most implementations I've worked with, and I've
seen low-bit-rate connections, usually wireless, that didn't
consistently deliver a second packet within 200 ms, so the timer
almost always fires and the receiver ACKs almost every packet.

Spencer

--- Andi Kleen <andi at firstfloor.org> wrote:
> On Thu, 2003-04-10 at 10:28, Yang Luqing wrote:
> > Hi, all,
> > 
> >        I want to know whether in most of the hosts on the
> Internet, their TCP use the delayed acknowledgement policy or
> acknowledge every packet it receives.
> 
> Basically all non toy stacks support delayed acks. You'll have
> a hard
> time to find a host that doesn't do it.
> 
> -Andi
> 
>