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| author | Nadia Derbey <Nadia.Derbey@bull.net> | 2008-09-02 23:35:59 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-09-03 04:21:39 +0200 |
| commit | 61e55d0576d0e7eb4fecaeb25b3618e035de5be1 (patch) | |
| tree | 67e5d5b779e9c229d4a3af919e821b619ee314b1 /Documentation | |
| parent | mm: size of quicklists shouldn't be proportional to the number of CPUs (diff) | |
| download | linux-61e55d0576d0e7eb4fecaeb25b3618e035de5be1.tar.xz linux-61e55d0576d0e7eb4fecaeb25b3618e035de5be1.zip | |
ipc: document the new auto_msgmni proc file
Update Documentation/filesystems/proc.txt: it describes the file
auto_msgmni intoduced to enable/disable msgmni automatic recomputing upon
memory add/remove (see thread http://lkml.org/lkml/2008/7/4/27). Also
added a description for msgmni (this filex is only listed in
Documentation/sysctl/kernel.txt).
Signed-off-by: Nadia Derbey <Nadia.Derbey@bull.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/filesystems/proc.txt | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/Documentation/filesystems/proc.txt b/Documentation/filesystems/proc.txt index 64557821ee59..394eb2cc1c39 100644 --- a/Documentation/filesystems/proc.txt +++ b/Documentation/filesystems/proc.txt @@ -1339,6 +1339,25 @@ Enables/Disables the protection of the per-process proc entries "maps" and "smaps". When enabled, the contents of these files are visible only to readers that are allowed to ptrace() the given process. +msgmni +------ + +Maximum number of message queue ids on the system. +This value scales to the amount of lowmem. It is automatically recomputed +upon memory add/remove or ipc namespace creation/removal. +When a value is written into this file, msgmni's value becomes fixed, i.e. it +is not recomputed anymore when one of the above events occurs. +Use auto_msgmni to change this behavior. + +auto_msgmni +----------- + +Enables/Disables automatic recomputing of msgmni upon memory add/remove or +upon ipc namespace creation/removal (see the msgmni description above). +Echoing "1" into this file enables msgmni automatic recomputing. +Echoing "0" turns it off. +auto_msgmni default value is 1. + 2.4 /proc/sys/vm - The virtual memory subsystem ----------------------------------------------- |