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Date: Thu, 28 Jul 2011 14:07:33 -0500 (COT)
From: Alejandro Henao =?utf-8?Q?Gonz=C3=A1lez?=
 <desarrollosae5@dqingenieria.com>
To: Tomcat Users List <users@tomcat.apache.org>
Subject: Re: Problem with threads in stage Service (Tomcat 7.0.14)
Message-ID: <152dc955-313c-45b8-9a85-fa768376e442@correoDQ>
In-Reply-To: <4E319DFC.4070508@hanik.com>
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I dont believe that have GC running all the time, but the GC is called in t=
he above line to HTMLEncoder.encode. as follows. 


System.gc(); 


resultado =3D 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=3D10 tid=3D0x00002aaab31ea000 nid=3D0x=
47b2 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 probl=
em. 


On 7/28/2011 9:09 AM, Alejandro Henao Gonz=C3=A1lez 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 execu=
tes 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 manage=
r 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 n=
=C3=BAcluos incluso hasta los 8 a veces), y en consecuencia mi 
> aplicaci=C3=B3n web trabaja demasiado lento. 
> 
> Tengo el Tomcat 7.0.14 en Redhat RHLE 5.5 
> 
> La soluci=C3=B3n temporal que tengo es reiniciar el servicio, sin embargo=
 esta no es una soluci=C3=B3n pr=C3=A1ctica (pues debe ser un servidor 24/7=
). Es 
> posible configurar alg=C3=BAn timeout para hilos en la etapa de servicio,=
 o alguna soluci=C3=B3n alternativa para este problema? 
> 
> Muchas Gracias. Adjunto una imagen del reporte del estado por el tomcat M=
anager, y el uso de la CPU 
> 
> 
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