Re: How to diagnose crashes?

2005-09-29 Thread Srikanth, Throvagunta
Chris,

The 5.3 have this problem. I think it has something to do with ACPI.
Either go back to the 5.2 or pick the latest. You say the system
reboots itself from time to time. Is it a panic you see before the
reboot?

There must be an option to turn on somewhere asking them to write to
disk the contents of the physical memory. You can, then, run gdb on
the dumped core. I think I have seen someone do that on NetBSD.

Srikanth
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Thread-Topic: How to diagnose crashes?
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Subject: How to diagnose crashes?
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My FreeBSD 5.3-RELEASE box seems to be spontaneously restarting from
time to time.

I have not yet contacted the colo facility to determine if it's a power
issue, but wonder if anyone can help me out in how to diagnose whether
or not it's a server crash and not a power problem.

Where should I look for tips / hints that might help me determine the
cause of a crash that forced a reboot?

Thanks,
Chris
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How to diagnose crashes?

2005-07-05 Thread Chris Burchell
My FreeBSD 5.3-RELEASE box seems to be spontaneously restarting from
time to time.

I have not yet contacted the colo facility to determine if it's a power
issue, but wonder if anyone can help me out in how to diagnose whether
or not it's a server crash and not a power problem.

Where should I look for tips / hints that might help me determine the
cause of a crash that forced a reboot?

Thanks,
Chris
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Re: How to diagnose crashes?

2005-07-05 Thread Kris Kennaway
On Tue, Jul 05, 2005 at 10:52:06AM -0600, Chris Burchell wrote:
 My FreeBSD 5.3-RELEASE box seems to be spontaneously restarting from
 time to time.
 
 I have not yet contacted the colo facility to determine if it's a power
 issue, but wonder if anyone can help me out in how to diagnose whether
 or not it's a server crash and not a power problem.
 
 Where should I look for tips / hints that might help me determine the
 cause of a crash that forced a reboot?

See the chapter on kernel debugging in the developers' handbook.

Kris


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Re: How to diagnose crashes?

2005-07-05 Thread Casey Scott


 My FreeBSD 5.3-RELEASE box seems to be spontaneously restarting from
 time to time.

 I have not yet contacted the colo facility to determine if it's a power
 issue, but wonder if anyone can help me out in how to diagnose whether
 or not it's a server crash and not a power problem.

 Where should I look for tips / hints that might help me determine the
 cause of a crash that forced a reboot?

 Thanks,
 Chris
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 http://lists.freebsd.org/mailman/listinfo/freebsd-questions
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Did the reboot occur during a high network load? In my case, the reboots seem 
to be related to the kernel TCP/IP stack. The box reboots under network load 
way too often. I don't suspect any other hard problem with it. It handle 
kernel builds and makeworlds w/o incident. MemTest86 did not find any 
problems with the memory. 

I have seen some other posts on this list about this issue. The posters 
thought it was a problem with SMP kernels. I compiled a uniproc kernel and 
just had another spontaneous reboot last night! 

After looking for .core, you may want to capture /dev/console messages to a 
log file.  I am assuming since the box is colo'd, you don't have console 
access. You may still miss some output though.

Casey
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