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From Filip Hanik - Dev Lists <devli...@hanik.com>
Subject Re: Problem with threads in stage Service (Tomcat 7.0.14)
Date Thu, 28 Jul 2011 19:20:26 GMT
that's an academic exercise for you, in the meantime, add in this option to your startup options
-XX:-DisableExplicitGC

Filip

On 7/28/2011 1:07 PM, Alejandro Henao González wrote:
> I dont believe that have GC running all the time, but the GC is called in the above line
to HTMLEncoder.encode. as follows.
>
>
>
> System.gc();
>
>
> resultado = htmlEncoder.encode(resultado);
> response.reset();
>
>
> may be this the problem? why?
>
>
> Thanks.
>
> ----- Mensaje original -----
>
> De: "Filip Hanik - Dev Lists"<devlists@hanik.com>
> Para: "Tomcat Users List"<users@tomcat.apache.org>
> Enviados: Jueves, 28 de Julio 2011 12:35:56
> Asunto: Re: Problem with threads in stage Service (Tomcat 7.0.14)
>
> most likely you have GC running all the time
>
> ""http-bio-80"-exec-107" daemon prio=10 tid=0x00002aaab31ea000 nid=0x47b2 runnable [0x00000000436ab000]
> java.lang.Thread.State: RUNNABLE
> at java.util.HashMap.get(HashMap.java:303)
> at sae.HTMLEncoder.encode(HTMLEncoder.java:46)
>
> this should not be a stage where you're stuck, unless you have a loop problem.
>
>
>
>
>
> On 7/28/2011 9:09 AM, Alejandro Henao González wrote:
>> Good day.
>>
>> I have the following problem with my tomcat.
>>
>> Sometimes, some threads are keep in service stage for a long time (really never exit
from this stage), this causes that tomcat uses a
>> hight percentage of the CPU (100 % of 2 or 3 cores) thus the webapp executes very
slow.
>>
>> I have a Tomcat 7.0.14 in a Redhat RHLE 5.5.
>>
>> The partial solution is restart the service, but this is not a practical solution(because
is a 24/7 server). is posible config a timeout
>> for threads in service stage, or any solution??
>>
>> Thanks. Sorry for the redaction. Attached an image with the tomcat manager status
and the CPU consuming.
>>
>>
>> --------
>>
>> Cordial saludo.
>>
>> Tengo el siguiente problema con mi tomcat.
>> En algunas ocasiones, algunos hilos se quedan en la etapa de servicio por demasiado
tiempo (de hecho nunca salen de esta etapa), esto
>> causa que el tomcat use un alto porcenta de la CPU (el 100 % de 2 o 3 núcluos incluso
hasta los 8 a veces), y en consecuencia mi
>> aplicación web trabaja demasiado lento.
>>
>> Tengo el Tomcat 7.0.14 en Redhat RHLE 5.5
>>
>> La solución temporal que tengo es reiniciar el servicio, sin embargo esta no es
una solución práctica (pues debe ser un servidor 24/7). Es
>> posible configurar algún timeout para hilos en la etapa de servicio, o alguna solución
alternativa para este problema?
>>
>> Muchas Gracias. Adjunto una imagen del reporte del estado por el tomcat Manager,
y el uso de la CPU
>>
>>
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