I have gotten a thread dump with "kill -3". Care to take a look at it?
- Mike
On Mon, Aug 19, 2013 at 2:19 PM, Andrea Aime
<andrea.a...@geo-solutions.it>wrote:
> On Mon, Aug 19, 2013 at 7:52 PM, Mike Grogan
> <d.michael.gro...@gmail.com>wrote:
>
>> Sorry for # of questions from me recently ... trying to get my first
>> geoserver instance running (and one question resulted in legitimate bug
>> report) ...
>>
>> I am now having an issue with GWC ... specifically using the gmaps
>> service ... taking a thread to 100% CPU use and hanging ... with no more
>> response from the service. Any pointers toward debugging this?
>>
>> This seems to happen randomly ... sometimes it will happen quickly after
>> a tomcat restart ... sometimes I won't see it again for a few hours. Not a
>> huge load on server. Just me in development zooming and panning the maps,
>> requesting tiles from the gmaps gwc service.
>>
>> jstack can't even seem to walk the stack in the hung thread. I get a
>> "Error occurred during stack walking: java.lang.NullPointerException" from
>> jstack on the specific PID
>>
>
> Hmm... not sure, but have you tried sending sigquit instead? Quoting from
> http://www.crazysquirrel.com/computing/java/basics/java-thread-dump.jspx
>
> -----------------------------------------
> kill -QUIT process_id
> There process_id is the process number of the running Java process. The
> thread dump will be sent to wherever standard out is redirected too.
> -----------------------------------------
>
> Cheers
> Andrea
>
> --
> ==
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> ==
>
> Ing. Andrea Aime
> @geowolf
> Technical Lead
>
> GeoSolutions S.A.S.
> Via Poggio alle Viti 1187
> 55054 Massarosa (LU)
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>
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