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Hi guys,
just want to know which core file pattern is best to set for core dumps:
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or
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I will really appreciate an explanation why the chosen one is better.
Thanks a lot guys. (2 Replies)
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Hi Guys,
I was wondering if somebody could give me a link to a very good source of information or document about core dump process and How to's about it. I have also googled it and found some articles myself.
Thanks
Messi (1 Reply)
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3. UNIX for Dummies Questions & Answers
my progrme complaints 'Segmentation fault'.
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$ulimit
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Hi All
I am new for this forum. I have a core file by using gdb and bt cmd I got the function name but I want to the exact cause of the core dump because of I can not reproduse the binary so if any one know the cmd plz plz plz let me know. (0 Replies)
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i am new to this forum.i want detail of reading the core file and trace the problem because of what the program get crashed.please help me.if any body knows any website or tutoril plese let me know.
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Hi,
We have one application (c language) installed on our AIX 5.2. When we enter some large amount of data in one screen and do update, it is dumping core some times without any error (like bus error, segmentation fault). Next we open the application again and enter the same data and do update.... (4 Replies)
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help, what is the difference between core dump and panic dump? (1 Reply)
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core_addshmem_read(5) File Formats Manual core_addshmem_read(5)
NAME
core_addshmem_read - determines the inclusion of readable shared memory in a process core dump
VALUES
Failsafe
Default
Allowed values
or
DESCRIPTION
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-only 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?
Anyone.
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-only shared memory segments in user core files due to debugging needs by developers or maintainers on the
system.
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 sys-
tems 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 corruption 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/write shared memory segments.
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 HP.
Tunable Kernel Parameters core_addshmem_read(5)
