On 05/06/2010 14:41, ago...@libero.it wrote: > Thanks > > The question started in > http://mail-archives.apache.org/mod_mbox/tomcat-users/201005.mbox/thread?3 > on same thread. > > Now i have reduce the number of user (about 50 user simultanely) on a > win2003 ED quad processor with 8GB bram (I have tomcat 5.5.28, jdk.1.6.16, > IIS > (with certificate instaled) on port 80 that redirect request from port 80 to > 8080 tomcat connector server. Besides https request are directly managed > from > second connector, on port 443 of tomcat.) > > So the error referred, sometime occours. In particular i have noted that > this > error rise when a lot user make login in the application ( in a few second). > Probably this may be depend from a lot tcp/ip connection, but, this using > netstat -na not appear. > May be i must increase the number on maxTcpConnection on win2003 server > and/or > reduce tcpDelay. > Please give me a help to resolve the problem. > What tool i can use for investigate who cause socket close. > > The part of default server.xml of tomcat that i have change(2 connector > configuration an docbase) is :
I guess you missed the bit about "comments removed".
Why not backup that file, and then create a server.xml with all of the
comments removed?
> .......
>
> <!-- Define a non-SSL HTTP/1.1 Connector on port 8080 -->
> <Connector
> port="8080" maxHttpHeaderSize="8192"
> maxThreads="350" minSpareThreads="50" maxSpareThreads="100"
> enableLookups="false" redirectPort="443" acceptCount="100"
> connectionTimeout="20000" disableUploadTimeout="true" />
>
>
> <!-- Note : To disable connection timeouts, set connectionTimeout value
> to 0 -->
>
> <!-- Note : To use gzip compression you could set the following
> properties :
>
> compression="on"
> compressionMinSize="2048"
> noCompressionUserAgents="gozilla, traviata"
> compressableMimeType="text/html,text/xml"
> -->
>
> <!-- Define a SSL HTTP/1.1 Connector on port 8443 -->
> <!--
> <Connector port="8443" maxHttpHeaderSize="8192"
> maxThreads="150" minSpareThreads="25" maxSpareThreads="75"
> enableLookups="false" disableUploadTimeout="true"
> acceptCount="100" scheme="https" secure="true"
> clientAuth="false" sslProtocol="TLS" />
> -->
>
> <Connector port="443" maxHttpHeaderSize="10240"
> maxThreads="150" minSpareThreads="25" maxSpareThreads="100"
> enableLookups="false" disableUploadTimeout="true"
> acceptCount="100" scheme="https" secure="true"
> clientAuth="false" sslProtocol="TLS"
> keystoreFile="C:\CertificatiHTTPS\aaa.pfx"
> keystorePass="bbbb"
> keystoreType="PKCS12"
> />
>
>
> <!-- Define an AJP 1.3 Connector on port 8009 -->
> <Connector port="8009"
> enableLookups="false" redirectPort="443" protocol="AJP/1.3" />
>
> <!-- Define a Proxied HTTP/1.1 Connector on port 8082 -->
> <!-- See proxy documentation for more information about using this. -->
> <!--
>
> ........
>
> <!-- Define the default virtual host
> Note: XML Schema validation will not work with Xerces 2.2.
> -->
> <Host name="localhost" appBase="webapps"
> unpackWARs="true" autoDeploy="true"
> xmlValidation="false" xmlNamespaceAware="false">
>
>
> <Context path="" docBase="SIT/"/>
Is the above accurate, or is the extra slash after SIT an error?
If it is accurate, it's wrong and will also cause double deployment -
once as "/SIT/" and once as "/".
Are you able to match timestamps of the Socket close exception to a
particular request, and is there a matching request in the log?
p
> <!-- Defines a cluster for this node,
> By defining this element, means that every manager will be
> changed.
> So when running a cluster, only make sure that you have webapps
> in there
> that need to be clustered and remove the other ones.
> A cluster has the following parameters:
> -->
> ........
>
>
>
>
>> ----Messaggio originale----
>> Da: rainer.j...@kippdata.de
>> Data: 05/06/2010 11.09
>> A: "Tomcat Users List"<users@tomcat.apache.org>
>> Ogg: Re: R: RE: Re: intermittent SocketException on startup tomcat 5.5.28
>> and
> under JBOSS 4.2.3GA
>>
>> On 05.06.2010 09:23, Pid * wrote:
>>> On 5 Jun 2010, at 04:33, "ago...@libero.it"<ago...@libero.it> wrote:
>>>
>>>> Hi
>>>> I m very tired because the intermittent socket close exception
>>>> reappear.
>>>>
>>>> We now use tomcat 5.5.28 on win2003 ED SO and jdk 1.6.16.
>>>> The error that occours is:
>>>>
>>>> 4-giu-2010 7.48.35
>>
>> Date and Time in a bit strange format: 4th of June 2010, 07:48:35.
>>
>> Rainer
>>
>>> What is the above? It doesn't look familiar to me.
>>>
>>> Can you refresh our memories and please post the current server.xml
>>> (comments removed)?
>>>
>>>
>>> p
>>>
>>>> org.apache.tomcat.util.net.PoolTcpEndpoint acceptSocket
>>>> GRAVE: Endpoint ServerSocket
>>>> [addr=0.0.0.0/0.0.0.0,port=0,localport=8080]
>>>> ignored exception: java.net.SocketException: socket closed
>>>> java.net.SocketException: socket closed
>>>> at java.net.PlainSocketImpl.socketAccept(Native Method)
>>>> at java.net.PlainSocketImpl.accept(Unknown Source)
>>>> at java.net.ServerSocket.implAccept(Unknown Source)
>>>> at java.net.ServerSocket.accept(Unknown Source)
>>>> at
>>>> org.apache.tomcat.util.net.DefaultServerSocketFactory.acceptSocket
>>>> (DefaultServerSocketFactory.java:61)
>>>> at org.apache.tomcat.util.net.PoolTcpEndpoint.acceptSocket
>>>> (PoolTcpEndpoint.
>>>> java:408)
>>>> at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt
>>>> (LeaderFollowerWorkerThread.java:71)
>>>> at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run
>>>> (ThreadPool.
>>>> java:689)
>>>> at java.lang.Thread.run(Unknown Source)
>>>> 4-giu-2010 7.48.56 org.apache.tomcat.util.net.PoolTcpEndpoint
>>>> acceptSocket
>>>> AVVERTENZA: Reinitializing ServerSocket
>>>> 4-giu-2010 8.04.39 org.apache.tomcat.util.net.PoolTcpEndpoint
>>>> acceptSocket
>>>> GRAVE: Endpoint ServerSocket
>>>> [addr=0.0.0.0/0.0.0.0,port=0,localport=8080]
>>>> ignored exception: java.net.SocketException: socket closed
>>>> java.net.SocketException: socket closed
>>>> at java.net.PlainSocketImpl.socketAccept(Native Method)
>>>> at java.net.PlainSocketImpl.accept(Unknown Source)
>>>> at java.net.ServerSocket.implAccept(Unknown Source)
>>>> at java.net.ServerSocket.accept(Unknown Source)
>>>> at
>>>> org.apache.tomcat.util.net.DefaultServerSocketFactory.acceptSocket
>>>> (DefaultServerSocketFactory.java:61)
>>>> at org.apache.tomcat.util.net.PoolTcpEndpoint.acceptSocket
>>>> (PoolTcpEndpoint.
>>>> java:408)
>>>> at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt
>>>> (LeaderFollowerWorkerThread.java:71)
>>>> at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run
>>>> (ThreadPool.
>>>> java:689)
>>>> at java.lang.Thread.run(Unknown Source)
>>>> 4-giu-2010 8.05.00 org.apache.tomcat.util.net.PoolTcpEndpoint
>>>> acceptSocket
>>>> AVVERTENZA: Reinitializing ServerSocket
>>>> 4-giu-2010 8.05.00 org.apache.tomcat.util.net.PoolTcpEndpoint
>>>> acceptSocket
>>>> GRAVE: Endpoint ServerSocket
>>>> [addr=0.0.0.0/0.0.0.0,port=0,localport=8080]
>>>> ignored exception: java.net.SocketException: socket closed
>>>> java.net.SocketException: socket closed
>>>> at java.net.PlainSocketImpl.socketAccept(Native Method)
>>>> at java.net.PlainSocketImpl.accept(Unknown Source)
>>>> at java.net.ServerSocket.implAccept(Unknown Source)
>>>> at java.net.ServerSocket.accept(Unknown Source)
>>>> at
>>>> org.apache.tomcat.util.net.DefaultServerSocketFactory.acceptSocket
>>>> (DefaultServerSocketFactory.java:61)
>>>> at org.apache.tomcat.util.net.PoolTcpEndpoint.acceptSocket
>>>> (PoolTcpEndpoint.
>>>> java:408)
>>>> at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt
>>>> (LeaderFollowerWorkerThread.java:71)
>>>> at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run
>>>> (ThreadPool.
>>>> java:689)
>>>> at java.lang.Thread.run(Unknown Source)
>>>> 4-giu-2010 8.05.21 org.apache.tomcat.util.net.PoolTcpEndpoint
>>>> acceptSocket
>>>> AVVERTENZA: Reinitializing ServerSocket
>>>> 4-giu-2010 8.06.55 org.apache.tomcat.util.net.PoolTcpEndpoint
>>>> acceptSocket
>>>> GRAVE: Endpoint ServerSocket
>>>> [addr=0.0.0.0/0.0.0.0,port=0,localport=8080]
>>>> ignored exception: java.net.SocketException: socket closed
>>>> java.net.SocketException: socket closed
>>>> at java.net.PlainSocketImpl.socketAccept(Native Method) .....
>>>>
>>>> This error slow down the application.
>>>>
>>>> we don't have firewall, pool of tcp connection seem correct, the
>>>> processor
>>>> and memory usage are normal (10% CPU and 50% RAM).
>>>>
>>>>
>>>> How can i investigte who cuse the problem? Jconsole observe memory
>>>> but seem
>>>> not tcp connection.
>>>> How can i understand why i have close socket?
>>>> whath are flakey router error?
>>>> How can i understand if i have saturate the connection on SO?
>>>>
>>>> Thank for all suggest
>>>> Best regards
>>>> Agostino
>>>>
>>>>
>>>>
>>>>
>>>>> ----Messaggio originale----
>>>>> Da: chuck.caldar...@unisys.com
>>>>> Data: 24/05/2010 15.38
>>>>> A: "Tomcat Users List"<users@tomcat.apache.org>, "ago...@libero.it"
>>>> <ago...@libero.it>
>>>>> Ogg: RE: Re: intermittent SocketException on startup tomcat 5.5.28
>>>>> and under
>>>> JBOSS 4.2.3GA
>>>>>
>>>>>> From: ago...@libero.it [mailto:ago...@libero.it]
>>>>>> Subject: R: Re: intermittent SocketException on startup tomcat
>>>>>> 5.5.28
>>>>>> and under JBOSS 4.2.3GA
>>>>>>
>>>>>> ERROR [org.apache.tomcat.util.net.JIoEndpoint]
>>>>>> Socket accept failed
>>>>>> java.net.SocketException: socket closed
>>>>>
>>>>> This isn't really a problem with the Tomcat server - it usually
>>>>> means the
>>>> client terminated the connection attempt before the socket on the
>>>> server end
>>>> could be created. If this is happening persistently, then something
>>>> in between
>>>> the client and Tomcat (e.g., a firewall or flakey router) is
>>>> dropping the
>>>> connection before it can be fully established. There's also a
>>>> possibility that
>>>> Windows is reaching some resource limit and preventing creation of
>>>> the server
>>>> end of the connection.
>>>>>
>>>>> - Chuck
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org
>> For additional commands, e-mail: users-h...@tomcat.apache.org
>>
>>
>
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org
> For additional commands, e-mail: users-h...@tomcat.apache.org
>
signature.asc
Description: OpenPGP digital signature
