10-28-2008
Funny I can see them all except one:
semmap
But if you had read the release notes especially : (release notes 11iv2 oct 2003)
http://docs.hp.com/en/5992-1968/5992-1968.pdf
On page 82 you would have noticed:
Quote:
• System-V IPC Kernel Tunable Parameter (semmap)(Obsolete): The memory allocation of
semaphore sets previously controlled by semmap is now done dynamically by the kernel.
The semmap kernel parameter is no longer tunable.
So before continuing further I would recommend you to look at the man pages of
kctune(1M) kmtune(1M) kclog(1M) kconfig(1M)
And read carefully:
Chapter*10*Configuring the Kernel
Last edited by vbe; 10-28-2008 at 12:05 PM..
Reason: addition: forgot kconfig
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semvmx(5) File Formats Manual semvmx(5)
NAME
semvmx - maximum value of any single System V IPC semaphore
VALUES
Failsafe
Default
Allowed values
DESCRIPTION
The tunable specifies the maximum value any given System V IPC semaphore can have.
If an application attempt to exceed this limit, it will receive an error from or from
For more information about System V semaphores, refer to the section of the sema(5) manpage.
Who Is Expected to Change This Tunable?
Anyone.
Restrictions on Changing
Changes to this tunable take effect at the next reboot.
Note: If the DynSysVSem optional product bundle is installed increases in the tunable value take effect immediately; decreases in the tun-
able value take effect at the next reboot.
When Should the Value of This Tunable Be Raised?
If an application requires larger semaphore values.
When Should the Value of This Tunable Be Lowered?
If requirements for the single semaphore value has decreased, or if there for limit protection on run-away applications which change sema-
phores.
What Other Tunable Values Should Be Changed at the Same Time?
All the System V semaphore tunables are interrelated and should not be treated as independent variables. The tunables must be evaluated as
a system to ensure they reflect the application requirements. The semaphore tunables include and Consider changes to when changing
Note: If the DynSysVSem optional product bundle is installed then the and tunables are ignored and have no effect.
WARNINGS
All HP-UX kernel tunable parameters are release specific. This parameter may be removed or have its meaning changed in future releases of
HP-UX.
Installation of optional kernel software, from HP or other vendors, may cause changes to tunable parameter values. After installation,
some tunable parameters may no longer be at the default or recommended values. For information about the effects of installation on tun-
able values, consult the documentation for the kernel software being installed. For information about optional kernel software that was
factory installed on your system, see at
AUTHOR
was developed by AT&T.
SEE ALSO
semop(2), semctl(2), sema(5), semaem(5), semmni(5), semmns(5), semmnu(5), semmsl(5), semume(5), sysv_hash_locks(5).
Tunable Kernel Parameters semvmx(5)