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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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crashdc(8)						      System Manager's Manual							crashdc(8)

NAME
crashdc - Diagnostic data collection for a running or crashed system SYNOPSIS
/usr/bin/crashdc [system-kernel] [core-image] DESCRIPTION
The crashdc utility examines the core image of the operating system to extract critical diagnostic data. This utility is a shell script that invokes several tools and commands that extract selected parameters of a running or a crashed system (for example, system configura- tion, running processes, and panic messages). The arguments to the crashdc utility are the system kernel and the core image. The default values are /vmunix and /dev/mem, respectively. If you specify no arguments, the crashdc utility examines the running system. The system usually invokes the crashdc utility during system startup. If the most recent core dump has been saved by the savecore command, both the core image and the system kernel (respectively vmcore.n and vmunix.n, where the variable n is the crash number) are saved in the crash directory (by default, /var/adm/crash). Also, the crashdc utility saves the output as the file crash-data.n (where the variable n is the crash number) in the crash directory. The crashdc utility is invoked only if crash-data.n output in the crash directory does not exist or is not from the most recent crash. FILES
Default core image Default system image Output from crashdc SEE ALSO
Commands: dbx(1), kdbx(8), savecore(8) crashdc(8)
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