[CentOS] Diagnosing random hangs

Tue Dec 19 12:22:16 UTC 2006
Mark Belanger <mark_belanger at ltx.com>

James Olin Oden wrote:
> On 12/18/06, James Olin Oden <james.oden at gmail.com> wrote:
>> 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?
>>
> Oh, I just noticed propietary serial bus, does mean you have your own
> device driver(s)?   Still see if magic sysreq works, but what you do
> with this should be driven by your driver writers.

We do have our own drivers(supplied by a 3rd party).   These
drivers are my biggest suspect.

-Mark
> 
> Cheers...james
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-- 
Mark Belanger
LTX Corporation