diff options
| author | Eric Dumazet <edumazet@google.com> | 2019-10-30 18:05:46 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-10-31 22:02:01 +0100 |
| commit | 623d0c2db02043e43b698fdd8de1bd398b8e7b37 (patch) | |
| tree | 53142e1249ec020cf559130f197077fd53c51139 /net/ipv4/tcp_ipv4.c | |
| parent | net: increase SOMAXCONN to 4096 (diff) | |
| download | linux-623d0c2db02043e43b698fdd8de1bd398b8e7b37.tar.xz linux-623d0c2db02043e43b698fdd8de1bd398b8e7b37.zip | |
tcp: increase tcp_max_syn_backlog max value
tcp_max_syn_backlog default value depends on memory size
and TCP ehash size. Before this patch, the max value
was 2048 [1], which is considered too small nowadays.
Increase it to 4096 to match the recent SOMAXCONN change.
[1] This is with TCP ehash size being capped to 524288 buckets.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Willy Tarreau <w@1wt.eu>
Cc: Yue Cao <ycao009@ucr.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to '')
| -rw-r--r-- | net/ipv4/tcp_ipv4.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c index 6be568334848..b74192695955 100644 --- a/net/ipv4/tcp_ipv4.c +++ b/net/ipv4/tcp_ipv4.c @@ -2681,7 +2681,7 @@ static int __net_init tcp_sk_init(struct net *net) net->ipv4.tcp_death_row.sysctl_max_tw_buckets = cnt / 2; net->ipv4.tcp_death_row.hashinfo = &tcp_hashinfo; - net->ipv4.sysctl_max_syn_backlog = max(128, cnt / 256); + net->ipv4.sysctl_max_syn_backlog = max(128, cnt / 128); net->ipv4.sysctl_tcp_sack = 1; net->ipv4.sysctl_tcp_window_scaling = 1; net->ipv4.sysctl_tcp_timestamps = 1; |