diff options
| 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 /net | |
| parent | c4221a8cc3a719a3926a330c4fe15e2b15abe662 (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>
Diffstat (limited to 'net')
| -rw-r--r-- | net/ipv4/tcp.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index 0ae265d39184..b7b6ab41b496 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -5231,7 +5231,7 @@ void __init tcp_init(void) /* Set per-socket limits to no more than 1/128 the pressure threshold */ limit = nr_free_buffer_pages() << (PAGE_SHIFT - 7); max_wshare = min(4UL*1024*1024, limit); - max_rshare = min(6UL*1024*1024, limit); + max_rshare = min(32UL*1024*1024, limit); init_net.ipv4.sysctl_tcp_wmem[0] = PAGE_SIZE; init_net.ipv4.sysctl_tcp_wmem[1] = 16*1024; |