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From "Konrath Thomas" <thomas.konr...@unycom.com>
Subject ThreadPool logFull, Tomcat not responding anymore
Date Fri, 25 Nov 2005 12:46:48 GMT
Hi .. 


We have a problem on our product server with our web application (which
is too complicated to go into the details of here). 
Every day at least once our web application is mysteriously hanging. The
application don't seem to crash or emit error messages, it just stop
responding. 


In the catalina.out file I found the following error message: 
Nov 23, 2005 2:15:39 PM org.apache.tomcat.util.threads.ThreadPool 
logFull 
SEVERE: All threads (75) are currently busy, waiting. Increase 
maxThreads (75) or check the servlet status 
=> complete error message below 


I have search in the internet for this problem. It seems that increasing
the number of max threads is not the solution. The problem will be still
there, just with the new max thread number. I have found several
postings, describes this problem on a Red Hat Server (like
http://mail-archives.apache.org/mod_mbox/jakarta-tomcat-user/200408.mbox
/%3c2004Aug01.0922.scs.0012@eskimo.com%3e). 


Our configuration is: 


        Jakarta Tomcat 4.1.31 
        j2sdk 1.4.2_06 
        Suse Linux Enterprise Server 8 


Please note that this server is not under our control. It is controlled
by the IT department of our customer. We have no root privileges on the
server!!! So we are not able to create a stack thumb of the threads up
to now. But we are working on it ...


Can anyone help me or give me a hint to solve this problem??? 


kind regards 
Tom 


 

Nov 23, 2005 2:15:39 PM org.apache.tomcat.util.threads.ThreadPool 
logFull 
SEVERE: All threads (75) are currently busy, waiting. Increase 
maxThreads (75) or check the servlet status 
Nov 23, 2005 4:05:27 PM org.apache.commons.modeler.Registry 
registerComponent 
SEVERE: Error registering 
Catalina:type=RequestProcessor,worker=jk-8017,name=JkRequest10631 
javax.management.InstanceAlreadyExistsException: 
Catalina:type=RequestProcessor,worker=jk-8017,name=JkRequest10631 
        at 
mx4j.server.MBeanServerImpl.register(MBeanServerImpl.java:1123) 
        at 
mx4j.server.MBeanServerImpl.registerImpl(MBeanServerImpl.java:1054) 
        at 
mx4j.server.MBeanServerImpl.registerMBeanImpl(MBeanServerImpl.java:1002)

        at 
mx4j.server.MBeanServerImpl.registerMBean(MBeanServerImpl.java:978) 
        at 
org.apache.commons.modeler.Registry.registerComponent(Registry.java:871)

        at 
org.apache.jk.common.ChannelSocket.registerRequest(ChannelSocket.java:43
6) 
        at 
org.apache.jk.common.HandlerRequest.decodeRequest(HandlerRequest.java:44
3) 
        at 
org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:352) 
        at 
org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:743) 
        at 
org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:
675) 
        at 
org.apache.jk.common.SocketConnection.runIt(ChannelSocket.java:866) 
        at 
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool
.java:683) 
        at java.lang.Thread.run(Thread.java:534) 
Nov 23, 2005 4:05:27 PM org.apache.jk.common.ChannelSocket 
registerRequest 
WARNING: Error registering request 


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