Re: TCP connection issues against Amazon S3

On 07 Jan 2015, at 21:33, Eric Dumazet [off-list ref] wrote:

On Wed, 2015-01-07 at 20:37 +0000, Erik Grinaker wrote:
I agree. I have contacted Amazon about this, but am not too hopeful

quoted

for a quick fix; they have been promising SACK-support on their
loadbalancers since 2006, for example.

That said, since this change breaks a service as popular as S3, it
might be worth reconsidering.

Which change are you talking about ? Have you done a bisection to
clearly identify the patch exposing this sender bug ?

FWIW, I've done a bisection, and it’s triggered by this change:

https://github.com/torvalds/linux/commit/4e4f1fc226816905c937f9b29dabe351075dfe0f

We are not going to stick TCP stack to 20th century and buggy peers or
middleboxes, sorry.

That’s fair enough.