[Bloat] benefits of ack filtering

[Mikael Abrahamsson]

On Wed, 29 Nov 2017, Sebastian Moeller wrote:

> Well, ACK filtering/thinning is a simple trade-off: redundancy versus 
> bandwidth. Since the RFCs say a receiver should acknoledge every second 
> full MSS I think the decision whether to filter or not should be kept to

Why does it say to do this? What benefit is there to either end system to 
send 35kPPS of ACKs in order to facilitate a 100 megabyte/s of TCP 
transfer?

Sounds like a lot of useless interrupts and handling by the stack, apart 
from offloading it to the NIC to do a lot of handling of these mostly 
useless packets so the CPU doesn't have to do it.

Why isn't 1kPPS of ACKs sufficient for most usecases?

-- 
Mikael Abrahamsson    email: swmike at swm.pp.se