Consultor Eletrônico

Status: Verified

GOAL:

IBM AIX Unix non-tunable kernel parameters

FACT(s) (Environment):

IBM AIX

FIX:

There are several kernel parameters that may be tunable on most Unix systems that are hard coded on IBM AIX Unix. The following is a list of each parameter along with its hard coded settings.
AIX 5.1 AIX 5.2
Semaphores: --------- ---------
Maximum number of semaphore IDs 131072 131072
Maximum semaphores per semaphore ID 65535 65535
Maximum operations per semop call 1024 1024
Maximum undo entries per process 1024 1024
Size in bytes of undo structure 8208 8208
Semaphore maximum value 32767 32767
Adjust on exit maximum value 16384 16384

Message Queues:
Maximum message size 4MB 4MB
Maximum bytes on queue 4MB 4MB
Maximum number of message queue IDs 131072 131072
Maximum messages per queue ID 524288 524288

Shared Memory:
Maximum segment size (32-bit) 2GB 2GB
Maximum segment size (64-bit) 64GB 1TB
Minimum segment size 1 1
Maximum number of shared memory IDs. 131072 131072
Maximum number of segments per process
(32-bit) 11 11
(64-bit) 268435456 268435456
Progress/OpenEdge versions prior to OpenEdge 10.0B native 64-bit port cannot take the advantages of AIX 64-bit kernel settings, such as Maximum segment size and Maximum number of segments per process.
AIX 4.3.2 AIX 4.3.3
Semaphores: --------- ---------
Maximum number of semaphore IDs 131072 131072
Maximum semaphores per semaphore ID 65535 65535
Maximum operations per semop call 1024 1024
Maximum undo entries per process &.nbsp; 1024 1024
Size in bytes of undo structure 8208 8208
Semaphore maximum value 32767 32767
Adjust on exit maximum value 16384 16384

Message Queues:
Maximum message size 4MB 4MB
Maximum bytes on queue 4MB 4MB
Maximum number of message queue IDs 131072 131072
Maximum messages per queue ID 524288 524288

Shared Memory:
Maximum segment size 2GB 2GB
Minimum segment size 1 1
Maximum number of shared memory IDs. 4096 131072
Maximum number of segments per process 11 11

AIX 4.3.0 AIX 4.3.1
Semaphores: --------- ---------
Maximum number of semaphore IDs 4096 4096
Maximum semaphores per semaphore ID 65535 65535
Maximum operations per semop call 1024 1024
Maximum undo entries per process 1024 1024
Size in bytes of undo structure 8208 8208
Semaphore maximum value 32767 32767
Adjust on exit maximum value 16384 16384

Message Queues:
Maximum message size 4MB 4MB
Maximum bytes on queue 4MB 4MB
Maximum number of message queue IDs 4096 &nbs.p; 4096
Maximum messages per queue ID 524288 524288

Shared Memory:
Maximum segment size 256MB 2GB
Minimum segment size 1 1
Maximum number of shared memory IDs. 4096 4096
Maximum number of segments per process 11 11

AIX 3.2.5 AIX 4.2.x
Semaphores: --------- ---------
Maximum number of semaphore IDs 4096 4096
Maximum semaphores per semaphore ID 65535 65535
Maximum operations per semop call 1024 1024
Maximum undo entries per process 1024 1024
Size in bytes of undo structure 8208 8208
Semaphore maximum value 32767 32767
Adjust on exit maximum value 16384 16384

Message Queues:
Maximum message size 65535 4MB
Maximum bytes on queue 65535 4MB
Maximum number of message queue IDs 4096 4096
Maximum messages per queue ID 8192 524288

Shared Memory:
Maximum segment size 256MB 256MB
Minimum segment size 1 . 1
Maximum number of shared memory IDs. 4096 4096
Maximum number of segments per process 10 10

AIX 3.1 AIX 3.2
Semaphores: ------- -------
Maximum number of semaphore IDs 4096 4096
Maximum semaphores per semaphore ID 102400 65535
Maximum operations per semop call 1024 1024
Maximum undo entries per process 1024 1024
Size in bytes of undo structure 8208 8208
Semaphore maximum value 32767 32767
Adjust on exit maximum value 16384 16384

Message Queues:
Maximum message size 65535 65535
Maximum bytes on queue 65535 65535
Maximum number of message queue IDs 4096 4096
Maximum messages per queue ID 8192 8192

Shared Memory:
Maximum segment size 256MB 256MB
Minimum segment size 1 1
Maximum number of shared memory IDs. 4096 4096
Maximum number of segments per process 10 10
.