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| author | Eric Dumazet <edumazet@google.com> | 2025-05-13 19:39:19 +0000 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2025-05-15 11:30:09 -0700 |
| commit | 572be9bf9d0d96242dd7977ce456009b6c690dce (patch) | |
| tree | b903298160aa31a09c0d70a56eaac6b1d2f6cf51 /Documentation | |
| parent | c4221a8cc3a719a3926a330c4fe15e2b15abe662 (diff) | |
| download | linux-next-572be9bf9d0d96242dd7977ce456009b6c690dce.tar.gz linux-next-572be9bf9d0d96242dd7977ce456009b6c690dce.zip | |
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>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/networking/ip-sysctl.rst | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/Documentation/networking/ip-sysctl.rst b/Documentation/networking/ip-sysctl.rst index 91b7d0a1c7fd..0f1251cce314 100644 --- a/Documentation/networking/ip-sysctl.rst +++ b/Documentation/networking/ip-sysctl.rst @@ -735,7 +735,7 @@ tcp_rmem - vector of 3 INTEGERs: min, default, max net.core.rmem_max. Calling setsockopt() with SO_RCVBUF disables automatic tuning of that socket's receive buffer size, in which case this value is ignored. - Default: between 131072 and 6MB, depending on RAM size. + Default: between 131072 and 32MB, depending on RAM size. tcp_sack - BOOLEAN Enable select acknowledgments (SACKS). |