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| author | David Wilson <dw@botanicus.net> | 2014-12-20 05:14:29 +0000 |
|---|---|---|
| committer | Michael Kerrisk <mtk.manpages@gmail.com> | 2015-02-21 08:32:11 +0100 |
| commit | 75979920fe0da5009b665978bbed2215bb596459 (patch) | |
| tree | 52b4c53af89f9e8296ce3b5c5fe438cb9153ec57 | |
| parent | 674f11ecbc25eb616b596b2920385d160d94bbf1 (diff) | |
| download | man-pages-75979920fe0da5009b665978bbed2215bb596459.tar.gz | |
socket.7: Document SO_REUSEPORT socket option
Signed-off-by: David Wilson <dw@botanicus.net>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
| -rw-r--r-- | man7/socket.7 | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/man7/socket.7 b/man7/socket.7 index 2cb9fd98f8..9c79eee47b 100644 --- a/man7/socket.7 +++ b/man7/socket.7 @@ -662,6 +662,20 @@ with a specific port then it is not possible to bind to this port for any local address. Argument is an integer boolean flag. .TP +.BR SO_REUSEPORT " (since Linux 3.9)" +Indicates that attempts to bind an identical listening address to +multiple +.B AF_INET +or +.B AF_INET6 +sockets by the same UID may succeed. This option allows +.BR accept (2) +load distribution in a multi-threaded server to be improved by +using a distinct listener socket for each thread. This must be set +on each socket prior to calling +.BR bind (2) +on the socket. +.TP .BR SO_RXQ_OVFL " (since Linux 2.6.33)" .\" commit 3b885787ea4112eaa80945999ea0901bf742707f Indicates that an unsigned 32-bit value ancillary message (cmsg) |