listen.2: The 'somaxconn' default value has increased to 4096

See https://bugzilla.suse.com/show_bug.cgi?id=1162464

Reported-by: Peter Gajdos <pgajdos@suse.cz>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

diff --git a/man2/listen.2 b/man2/listen.2
index 16c2c195e5efd93536bb5488b4346df8e37357e5..10ff4fab649450d4d4aa07561874e48e3bac9fef 100644 (file)
--- a/man2/listen.2
+++ b/man2/listen.2
@@ -166,8 +166,9 @@ If the
 .I backlog
 argument is greater than the value in
 .IR /proc/sys/net/core/somaxconn ,
-then it is silently truncated to that value;
-the default value in this file is 128.
+then it is silently truncated to that value.
+Since Linux 5.4, the default in this file is 4096;
+in earlier kernels, the default value is 128.
 In kernels before 2.4.25, this limit was a hard coded value,
 .BR SOMAXCONN ,
 with the value 128.