Re: WGLC review of draft-ietf-quic-recovery-29

[Gorry Fairhurst <[e-mail]>]

Hi Praveen,

On 08/07/2020 22:29, Praveen Balasubramanian wrote:
>
> Section 7.9
>
> "Implementations MUST either use pacing or another method to limit 
> such bursts to the initial congestion window; see Section 7.2."
>
> This seems to preclude use of segmentation offload of sizes greater 
> than IW. In datacenters we routinely send bursts that are higher 
> without causing loss.
>
Is that within data centres? or from data centres to Internet 
destinations? ... if the latter, how can the sender be sure this is not 
impacting other traffic?
>
> The MUST here seems unnecessary. It also conflicts with the 
> RECOMMENDED in an earlier sentence.
>
I actually don't see this as conflicting. The recommendation in this 
section is to pace. The requirement is that sender limits burst, using 
some method, to the size of IW.

Gorry