From: Eric Dumazet
Date: Tue, 4 Dec 2018 07:58:17 -0800
> TCP_NOTSENT_LOWAT socket option or sysctl was added in linux-3.12
> as a step to enable bigger tcp sndbuf limits.
>
> It works reasonably well, but the following happens :
>
> Once the limit is reached, TCP stack generates
> an [E]POLLO
TCP_NOTSENT_LOWAT socket option or sysctl was added in linux-3.12
as a step to enable bigger tcp sndbuf limits.
It works reasonably well, but the following happens :
Once the limit is reached, TCP stack generates
an [E]POLLOUT event for every incoming ACK packet.
This causes a high number of con
