core_addshmem_write man page on HP-UX

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core_addshmem_write(5)					core_addshmem_write(5)

       core_addshmem_write  -  determines  the	inclusion of read/write shared
       memory in process core dump

   Allowed values

       The tunable was added in response to a problem  where  a	 customer  was
       limited	in  debugging a user-level process crash because shared memory
       segments were not written as part of the core file.

       Upon core dump, the sections of user memory  labeled  as	 shared	 read-
       write are written (along with the normal data sections) if this tunable
       is set to and left out if it is set to

   Who is Expected to Change This Tunable?

   Restrictions on Changing
       Changes to this tunable take effect immediately.

   When Should the Value of This Tunable Be Raised?
       When you wish to include read-write shared memory segments in user core
       files  due  to debugging needs by developers or maintainers on the sys‐

   What Are the Side Effects of Raising the Value?
       User process core files would increase in most cases (most applications
       use  at	least some shared memory).  This could be a problem on systems
       where disk space is at a premium.

   When Should the Value of This Tunable Be Lowered?
       When there is no need for debugging core files where shared memory cor‐
       ruption or data values are in question.

   What Are the Side Effects of Lowering the Value?
       Core files will tend to be smaller.

   What Other Tunable Values Should Be Changed at the Same Time?
       Certainly  think	 about	which does the same thing for read-only shared
       memory segments.

       All HP-UX kernel tunable parameters are release specific.  This parame‐
       ter  may	 be  removed or have its meaning changed in future releases of

       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

       was developed by HP.

			   Tunable Kernel Parameters	core_addshmem_write(5)

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