[CentOS] Diagnosing random hangs

[James Olin Oden]

On 12/18/06, Mark Belanger <mark_belanger at ltx.com> wrote:
> I have many different centos machines that are hanging
> regulary.  I believe this is due to something our application
> is doing - not a centos specific problem.
>
> When the machines hang, there is no access to the console
> or remote access(ssh, rsh, etc).
>
> Any tips on debugging this issue?  It is becoming quite a
> show stopper as we migrate our product from Solaris to
> Linux.
>
> tia,
>
> FYI - The "application" is a collection of programs that
> communicate with each other and to a large chip tester via
> a proprietary serial bus.  The hangs are random but pretty
> frequent - in the range of several per day to several per week.
>
> -Mark
>
Have you tried the magic sysreq sequence on the console?

Cheers...james