Solaris Tunable Parameters Reference Manual

Parameters With No Functionality

The following section describes parameters whose functionality has been removed, but the parameter might still be available for compatibility reasons. These parameters are ignored if they are set.

Paging-Related Tunables

`tune_t_gpgslo`

Description: Obsolete. Variable left in place for compatibility reasons.

`tune_t_minasmem`

Description: Obsolete. Variable left in place for compatibility reasons.

System V Message Parameters

`msgsys:msginfo_msgssz`

Description: Specifies size of chunks system uses to manage space for message buffers. Obsolete since the Solaris 8 release.
Data Type: Signed integer
Default: 40
Range: 0 to MAXINT
Dynamic?: No. Loaded into msgtql field of msginfo structure.
Validation: The space consumed by the maximum number of data structures that would be created to support the messages and queues is compared to 25% of the available kernel memory at the time the module is loaded. If the number is too big, the message queue module refuses to load and the facility is unavailable. This computation does include the space that might be consumed by the messages. This situation occurs only when the module is first loaded.
When to Change: When the default value is not enough. Generally changed at the recommendation of software vendors.
Commitment Level: Obsolete

`msgsys:msginfo_msgmap`

Description: Number of messages the system supports. Obsolete since the Solaris 8 release.
Data Type: Signed integer
Default: 100
Range: 0 to MAXINT
Dynamic?: No
Validation: The space consumed by the maximum number of data structures that would be created to support the messages and queues is compared to 25% of the available kernel memory at the time the module is loaded. If the number is too big, the message queue module refuses to load and the facility is unavailable. This computation does include the space that might be consumed by the messages. This situation occurs only when the module is first loaded.
When to Change: When the default value is not enough. Generally changed at the recommendation of software vendors.
Commitment Level: Obsolete

`msgsys:msginfo_msgseg`

Description: Number of msginfo_msgssz segments the system uses as a pool for available message memory. Total memory available for messages is msginfo_msgseg * msginfo_msgssz. Obsolete as of the Solaris 8 release.
Data Type: Signed short
Default: 1024
Range: 0 to 32,767
Dynamic?: No
Validation: The space consumed by the maximum number of data structures that would be created to support the messages and queues is compared to 25% of the available kernel memory at the time the module is loaded. If the number is too big, the message queue module refuses to load and the facility is unavailable. This computation does not include the space that might be consumed by the messages. This situation occurs only when the module is first loaded.
When to Change: When the default value is not enough. Generally changed at the recommendation of software vendors.
Commitment Level: Obsolete

System V Semaphore Parameters

`semsys:seminfo_semmap`

Obsolete. Variable is present in kernel for compatibility reasons but is no longer used.

`semsys:seminfo_semusz`

Obsolete. Any values entered are ignored.

NFS Module Parameters

`nfs:nfs_32_time_ok`

Obsolete as of the Solaris 8 release.

`nfs:nfs_acl_cache`

Obsolete as of the Solaris 2.6 release.