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Full Discussion: ipcs command
Top Forums UNIX for Dummies Questions & Answers ipcs command Post 7461 by rwb1959 on Wednesday 26th of September 2001 03:08:42 PM
Old 09-26-2001
ipcs simply reports information on IPC resources.

There is no "command line" way to change the values for the
IPC resources (and there shouldn't be). Depending on the
system you are running, you may be able just to change the
system tunable parameter values and reboot. On other systems
however, you may have to edit the system tunable parameters
and rebuild your kernel. This procedure is extremly system/OS
dependent and not recommended if you are new to UNIX.
You can render your system unbootable if you make a mistake
(or at the very least, hose up system performance). If nobody
but you relies or accesses the system then feel free to
expierement but be ready to do alot of reading.
 

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LEARN ABOUT HPUX

nstrsched

NSTRSCHED(5)							File Formats Manual						      NSTRSCHED(5)

NAME

       NSTRSCHED - number of STREAMS scheduler daemons to run

VALUES

   Failsafe
   Default
   Allowed values
   Recommended values
DESCRIPTION

       This  tunable  defines  the  number  of multiprocessor (MP) STREAMS scheduler daemons to run on systems containing more than one processor.
       Note that uniprocessor (UP) systems do not use an MP scheduler daemon, but both MP and UP systems always  have  one  UP	STREAMS  scheduler
       (supsched).

       If  the	tunable  value is set to zero, the system determines how many daemons to run, based on the number of processors in the system.	If
       the tunable value is set to a positive, non-zero value, that is the number of smpsched daemons that will be created on an MP system.

       Note: This tunable is for use by specific HP products only.  It may be removed in future HP-UX releases.

   Who Is Expected to Change This Tunable?
       Any customer.

   Restrictions on Changing
       Changes to this tunable take effect at next reboot.

   When Should the Value of This Tunable Be Raised?
       This tunable is for use by specific HP products only.  It may be removed in future HP-UX releases.

   What Are the Side Effects of Raising the Value of This Tunable?
       It could change the system performance unpredictably.

   When Should the Value of This Tunable Be Lowered?
       This tunable is for use by specific HP products only.  It may be removed in future HP-UX releases.

   What Are the Side Effects of Lowering the Value of This Tunable?
       It could change the system performance unpredictably.

   What Other Tunable Should Be Changed at the Same Time as This One?
       None.

WARNINGS

       This tunable is for use by specific HP products only.

       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 HP.

							     Tunable Kernel Parameters						      NSTRSCHED(5)
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