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(parent: c4221a8) | patch
tcp: increase tcp_rmem[2] to 32 MB
authorEric Dumazet <edumazet@google.com>
Tue, 13 May 2025 19:39:19 +0000 (19:39 +0000)
committerJakub Kicinski <kuba@kernel.org>
Thu, 15 May 2025 18:30:09 +0000 (11:30 -0700)
commit572be9bf9d0d96242dd7977ce456009b6c690dce
treeb903298160aa31a09c0d70a56eaac6b1d2f6cf51tree
parentc4221a8cc3a719a3926a330c4fe15e2b15abe662commit | diff
tcp: increase tcp_rmem[2] to 32 MB

Last change to tcp_rmem[2] happened in 2012, in commit b49960a05e32
("tcp: change tcp_adv_win_scale and tcp_rmem[2]")

TCP performance on WAN is mostly limited by tcp_rmem[2] for receivers.

After this series improvements, it is time to increase the default.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20250513193919.1089692-12-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Documentation/networking/ip-sysctl.rst diff | blob | blame | history
net/ipv4/tcp.c diff | blob | blame | history
Linux 6.x block layer and io_uring tree(s)