On Mon, May 21, 2018 at 6:09 PM Eric Dumazet <eduma...@google.com> wrote:

> ECN signals currently forces TCP to enter quickack mode for
> up to 16 (TCP_MAX_QUICKACKS) following incoming packets.

> We believe this is not needed, and only sending one immediate ack
> for the current packet should be enough.

> This should reduce the extra load noticed in DCTCP environments,
> after congestion events.

> This is part 2 of our effort to reduce pure ACK packets.

> Signed-off-by: Eric Dumazet <eduma...@google.com>
> ---

Acked-by: Neal Cardwell <ncardw...@google.com>

Thanks!

neal

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