Re: [PATCH net] tcp: defer SACK compression after DupThresh

2018-11-21 Thread David Miller
From: Eric Dumazet Date: Tue, 20 Nov 2018 05:53:59 -0800 > Jean-Louis reported a TCP regression and bisected to recent SACK > compression. > > After a loss episode (receiver not able to keep up and dropping > packets because its backlog is full), linux TCP stack is sending > a single SACK

[PATCH net] tcp: defer SACK compression after DupThresh

2018-11-20 Thread Eric Dumazet
Jean-Louis reported a TCP regression and bisected to recent SACK compression. After a loss episode (receiver not able to keep up and dropping packets because its backlog is full), linux TCP stack is sending a single SACK (DUPACK). Sender waits a full RTO timer before recovering losses. While