Installation guide

Tune the Shared Memory Segments
Chapter 10: Operating System Tuning 153
shmsys:shminfo_shmmni
Specifies the maximum number of shared memory segments that can
exist simultaneously, system-wide.
Example: (except Apache 1.x/Solaris 9) N/A
Example: (Apache 1.x/Solaris 9) 200
shmsys:shminfo_shmseg
(Not required for Solaris 9) Specifies the maximum number of shared
memory segments per process.
Example: 24
semsys:seminfo_semmni
Specifies the number of semaphore identifiers. Use 11 for every instance
of the Agent that you run on the system.
Example: (except Apache 1.x/Solaris 9) 100
Example: (Apache 1.x/Solaris 9) 200
semsys:seminfo_semmns
Specifies the number of semaphores in the system. Use 10 for every
instance of the Agent that you run on the system.
Example: (except Apache 1.x/Solaris 9) 100
Example: (Apache 1.x/Solaris 9) 400
semsys:seminfo_semmnu
Specifies the number of processes using the undo facility. For optimal
performance, semmnu should be greater than the number of Apache
child processes or Sun Java System processes running on the system at
any one time. For Apache servers, this value should exceed the
maxclients setting by 200 or more. For Sun Java System servers, this
value should exceed the maxprocs setting by 200 or more.
Example: (except Apache 1.x/Solaris 9) 200
Example: (Apache 1.x/Solaris 9) 400
3. Save your changes then exit the file or the utility.
4. Reboot the system.
5. Verify your changes by entering the command:
$ sysdef -i