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| author | Stephen Kitt <steve@sk2.org> | 2020-02-18 13:59:19 +0100 |
|---|---|---|
| committer | Jonathan Corbet <corbet@lwn.net> | 2020-02-19 03:34:25 -0700 |
| commit | fa5b526411bb5afe7736ce14bab18c0b68db4251 (patch) | |
| tree | a9941cbd73c3502c978834827a3afc712e95f3ee /Documentation/admin-guide/sysctl/kernel.rst | |
| parent | a474105bb6a6fe85ea30d7fe0a087184da32c751 (diff) | |
docs: add missing IPC documentation in sysctl/kernel.rst
This adds short descriptions of msgmax, msgmnb, msgmni, and shmmni,
which were previously listed in kernel.rst but not described.
Signed-off-by: Stephen Kitt <steve@sk2.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Diffstat (limited to 'Documentation/admin-guide/sysctl/kernel.rst')
| -rw-r--r-- | Documentation/admin-guide/sysctl/kernel.rst | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/Documentation/admin-guide/sysctl/kernel.rst b/Documentation/admin-guide/sysctl/kernel.rst index 99569a26f93e..0ae52156db75 100644 --- a/Documentation/admin-guide/sysctl/kernel.rst +++ b/Documentation/admin-guide/sysctl/kernel.rst @@ -410,6 +410,15 @@ to false. Generally used with the `kexec_load_disabled`_ toggle. msgmax, msgmnb, and msgmni ========================== +``msgmax`` is the maximum size of an IPC message, in bytes. 8192 by +default (``MSGMAX``). + +``msgmnb`` is the maximum size of an IPC queue, in bytes. 16384 by +default (``MSGMNB``). + +``msgmni`` is the maximum number of IPC queues. 32000 by default +(``MSGMNI``). + msg_next_id, sem_next_id, and shm_next_id (System V IPC) ======================================================== @@ -958,6 +967,9 @@ kernel. This value defaults to ``SHMMAX``. shmmni ====== +This value determines the maximum number of shared memory segments. +4096 by default (``SHMMNI``). + shm_rmid_forced =============== |