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From Alejandro Henao González <desarrollos...@dqingenieria.com>
Subject Re: Problem with threads in stage Service (Tomcat 7.0.14)
Date Thu, 28 Jul 2011 21:22:39 GMT
Ok. i will trie with this option. 

----- Mensaje original -----

De: "Filip Hanik - Dev Lists" <devlists@hanik.com> 
Para: "Tomcat Users List" <users@tomcat.apache.org> 
Enviados: Jueves, 28 de Julio 2011 14:20:26 
Asunto: Re: Problem with threads in stage Service (Tomcat 7.0.14) 

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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