See also “How to Specify Configurable
Parameter Values”.
Message
Parameter Summary |
 |
The following parameters control allocation of space for messages.
See also “Overview of Message
Queue Operations”.
IPC: Message | mesg | Enable or disable IPC messages at system
boot time. Manpage: mesg(5). |
IPC: Message | msgmap | Size of free-space resource map for allocating
shared memory space for messages. Manpage: msgmap(5). |
IPC: Message | msgmax | System-wide maximum size (in bytes) for
individual messages. Manpage: msgmax(5). |
IPC: Message | msgmnb | Maximum combined size (in bytes) of all
messages that can be queued simultaneously in a message queue. Manpage: msgmnb(5). |
IPC: Message | msgmni | Maximum number of message queues allowed
on the system at any given time. Manpage: msgmni(5). |
IPC: Message | msgseg | Maximum number of message segments that
can exist on the system. Manpage: msgseg(5). |
IPC: Message | msgssz | Message segment size in bytes. Manpage: msgssz(5). |
IPC: Message | msgtql | Maximum number of messages that can exist
on the system at any given time. Manpage: msgtql(5). |
Semaphore
Parameter Summary |
|
The following kernel parameters control System V IPC semaphore
operating limits.
See also “Overview of Semaphore
Operations”.
IPC: Semaphore | sema | Enable or disable IPC semaphores at system
boot time. Manpage: sema(5). |
IPC: Semaphore | semaem | Maximum value by which a semaphore can
be changed in a semaphore “undo” operation. Manpage: semaem(5). |
IPC: Semaphore | semmni | Maximum number of sets of IPC semaphores
allowed on the system at any one time. Manpage: semmni(5). |
IPC: Semaphore | semmns | Maximum number of individual IPC semaphores
available to system users, system-wide. Manpage: semmns(5). |
IPC: Semaphore | semmnu | Maximum number of processes that can
have undo operations pending on any given IPC semaphore on the system.
Manpage: semmnu(5). |
IPC: Semaphore | semmsl | Maximum number of individual System V
IPC semaphores per semaphore identifier. Manpage: semmsl(5). |
IPC: Semaphore | semume | Maximum number of IPC semaphores that
a given process can have undo operations pending on. Manpage: semume(5). |
IPC: Semaphore | semvmx | Maximum value any given IPC semaphore
is allowed to reach (prevents undetected overflow conditions). Manpage: semvmx(5). |
Shared
Memory Parameter Summary |
|
The following parameters control allocation of space for shared
memory.
See also “Overview of Shared
Memory Operation”.
IPC: Share | core_addshmem_read | Flag to include readable shared memory
in a process core dump. Manpage: core_addshmem_read(5). |
IPC: Share | core_addshmem_write | Flag to include read/write shared memory
in a process core dump. Manpage: core_addshmem_write(5). |
IPC: Share | shmem | Enable or disable shared memory at system
boot time. Manpage: shmem(5). |
IPC: Share | shmmax | Maximum allowable shared memory segment
size (in bytes). Manpage: shmmax(5). |
IPC: Share | shmmni | Maximum number of shared memory segments
allowed on the system at any given time. Manpage: shmmni(5). |
IPC: Share | shmseg | Maximum number of shared memory segments
that can be attached simultaneously to any given process. Manpage: shmseg(5). |
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