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Top Forums UNIX for Advanced & Expert Users Core Dump Analysis Using PStack and PMAP Post 302125657 by kimblebee on Friday 6th of July 2007 07:48:25 AM
Old 07-06-2007
Core Dump Analysis Using PStack and PMAP

Hello,

I'm new to the group and this is my first post. I'm hoping someone can help me out. I have a core dump that I need to analyze from a Unix box and I've never done this sort of thing before. I was told to run a pmap and pstack on the core file which provided two different output files. I've been searching on Google for information on how to read these files to determine the culprit of the crash but I'm not having much luck. I've read many articles about gdb but I don't have root access on the system to add the tool.

Can anyone point me to a good tutorial or provide tips on how to analyze the core dump file with the pmap and pstack files I have?

Thanks so much.

Kimmy
 

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pstack(1)						      General Commands Manual							 pstack(1)

NAME
pstack - print a stack trace for each LWP in each process and core file SYNOPSIS
DESCRIPTION
prints a stack trace (hex+symbolic) for each LWP (Lightweight Process) in each process and core file. Given the pid of a running process or the full path of a core file, prints the stack trace for each LWP thread in the process. To obtain symbol information, searches load modules (executable and shared libraries) in the current directory, and You can specify the executable path with the pid/corepath, separated by a colon character. If cannot find a load module, symbol information for frames in that module is not displayed. works by attaching to the running process and reading its registers, memory, and stack. Mismatch between executable and corefile may result in unpredictable behavior. Options supports the following option: Prints the usage menu. Operand supports the following operand: pid identifies a running process, with an optional execpath, the full executable path. corepath is the full path name of the specified executable. RETURN VALUES
returns the following values: Successful completion. Failure. An error has occurred. SEE ALSO
ldd(1), pldd(1). Itanium(R)-based Systems Only pstack(1)
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