chad Leigh wrote:
These sorts of things are usually but not always HW issues, like bad RAM etc. Reboots are not usually heat, which will usually cause a lockup. It could also be a low level kernel bug.
I should rather have said: a low level bug that happens in the kernel, often in driver code executing in the kernel
Chad
If you happen to see the console when it happens you may see something like "page fault in kernel mode" type errors. If you can trap the console output, say out a serial port to another machine, that would help. The other thing is to set up a dump file so that if the machine bug checks and reboots itself, it writes out memory to the swap file and then to a special dump file on reboot so that you can do a post mortem with the debugger on the dump file when it comes back up. To do this you have to have a swap file at least as big as your RAM. See the FreeBSD handbook for details on how to set this up Chad
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