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semaem(5)							     semaem(5)

NAME
       semaem - adjust-on-exit maximum value

VALUES
   Failsafe
   Default
   Allowed values
       or less than or equal to

DESCRIPTION
       The tunable specifies maximum cumulative "undo" value for any one sema‐
       phore as changed any one single process.	 That is, a process is allowed
       up to outstanding increments or decrements on a semaphore for which has
       been specified.

       If an application attempts to exceed the	 limit,	 it  will  receive  an
       error 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 tunable
       value take effect at the next reboot.

   When Should the Value of This Tunable Be Raised?
       When an application is expected to have large increments or  decrements
       of  a  semaphore,  or  a large series of increments without intervening
       decrements, or a large series of decrements without intervening	incre‐
       ments, for which "undo" semantics are desired.

   When Should the Value of This Tunable Be Lowered?
       When applications no longer have the need for a raised value.

   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 sema‐
       phore tunables include and Specifically, the and the  values  may  need
       adjustment together.

       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 parame‐
       ter  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  val‐
       ues.  For information about the effects of installation on tunable val‐
       ues, 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),  sema(5),   semmni(5),	  semmns(5),   semmnu(5),   semmsl(5),
       semume(5), semvmx(5), sysv_hash_locks(5).

			   Tunable Kernel Parameters		     semaem(5)

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