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тАО05-04-2003 09:11 PM
тАО05-04-2003 09:11 PM
CORE
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тАО05-04-2003 09:21 PM
тАО05-04-2003 09:21 PM
Re: CORE
If there's a hardware issue, server crashdumps and reboots
Eugeny
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тАО05-04-2003 09:26 PM
тАО05-04-2003 09:26 PM
Re: CORE
Basically a core dump from an application is what was in memory as a page fault for a particular function or program.
You can find where it comes from by:
$ what core
Hardware problems do not dump core, they may issue a panic and reboot your system.
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тАО05-04-2003 09:30 PM
тАО05-04-2003 09:30 PM
Re: CORE
This problem is related to resources on the server. When a particular application is trying to allocate some memory using systems calls like "malloc" or "calloc" it is facing a problem. When this system call fails the application will dump core.
Secondly, such problem may occur because of wrong way of allocating memory in the programs. Some programs go on allocating memory but never release it, this is called as "Memory leakage", a typical solution would be to reboot the server to release the memory and tuning the application code to avoid any future incidents.
Rgds..
Suhas
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тАО05-05-2003 02:06 AM
тАО05-05-2003 02:06 AM
Re: CORE
file core
Will tell you what happened
You may need to debug it or tune your system
Please post the output.
Look in /var/adm/syslog/syslog.log at the same time as the core.
Steve Steel
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тАО05-05-2003 04:33 AM
тАО05-05-2003 04:33 AM
Re: CORE
You can also use the strings command to see what's in the core file:
strings core |pg
Common causes include hardware problems, telnet or socket sessions dropping without properly shutting down the associated processes on the HP side, and there's a couple of SAM bugs that will dump core if you aren't up-to-date with your patches.
HTH
mark
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тАО05-07-2003 06:01 AM
тАО05-07-2003 06:01 AM
Re: CORE
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тАО05-07-2003 08:11 AM
тАО05-07-2003 08:11 AM
Re: CORE
#strings core | more
this would give you a closer idea og what cuased the core dump. don't try to go way deep into the file. usually the answer is within the 1st couple of lines.
peace
Donny
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тАО05-07-2003 09:11 AM
тАО05-07-2003 09:11 AM
Re: CORE
Check this post. Paula gives a very nice explanation about how to check a core file.
http://forums.itrc.hp.com/cm/QuestionAnswer/1,,0x4f1f9607df6ed711abdc0090277a778c,00.html
Regards,
Dario