Caché Installation Guide - InterSystems Documentation

The following table lists the tunable parameters for the IBM pSeries AIX 5.2 operating system.
AIX Interprocess Communication Tunable Parameters
Configure UNIX Kernel Parameters
Parameter
msgmax
msgmnb
msgmni
msgmnm
semaem
semmni
semmsl
semopm
semume
semvmx
shmmax
shmmin
shmmni
Purpose
Specifies maximum message size.
Specifies maximum number of
bytes on queue.
Specifies maximum number of
message queue IDs.
Specifies maximum number of
messages per queue.
Specifies maximum value for
adjustment on exit.
Specifies maximum number of
semaphore IDs.
Specifies maximum number of
semaphores per ID.
Specifies maximum number of
operations per semop() call.
Specifies maximum number of
undo entries per process.
Specifies maximum value of a
semaphore.
Specifies maximum shared
memory segment size.
Specifies minimum
shared-memory-segment size.
Specifies maximum number of
shared memory IDs.
Dynamic Values
Maximum value of 4 MB
Maximum value of 4 MB
Maximum value of 4096
Maximum value of 524288
Maximum value of 16384
Maximum value of 4096
Maximum value of 65535
Maximum value of 1024
Maximum value of 1024
Maximum value of 32767
Maximum value of 256 MB for
32-bit processes and 0x80000000u
for 64-bit
Minimum value of 1
Maximum value of 4096
B.2.3.4 Red Hat Linux Platform Notes
This topic includes the information on the following adjustments:
• Shared Memory Limit
Caché Installation Guide 97