Tomcat group

[Ram Mahajan]

Can someone tell me which email address I need to use to unsubscribe from
this group ?

Thanks
Ram

RE: QoS in Tomcat?

[Ram Mahajan]

Can some one tell me how to unsubscribe from this group ?

Thanks
Ram

-Original Message-
From: Rui Zhang [mailto:[EMAIL PROTECTED] 
Sent: Friday, May 28, 2004 3:59 PM
To: Tomcat Users List
Subject: Re: QoS in Tomcat?


Many thanks, Tim. That at least sounds worth a try... I've got a valve
sampling performance data up and running already.

But, Is it sensible we may alter Tomcat to make it QoS-enabled? If so, where
shall we look at to start?

Best regards,

Rui


On Fri, 28 May 2004, Tim Funk wrote:

 Nope. The spec doesn't spell this out. If your feeling daring, you 
 could write a filter that tries to set and reset the Thread.priorities 
 on the fly. Then if your JVM pays attention to the thread priorities - 
 you might get the tweaking you need. (You can also do this in a Valve 
 if you want to be lower in the stack but I really doubt any of this is 
 useful but its a great time waster on a cold rainy day)

 For example - without all the need try catches ...
 doFilter(...) {
  int newPriority = magicMethodToDeterminePriority(request);
  int oldPriority = currentThread().getPriority();
  currentThread().setPriority(newPriority);
  chain.doFilter();
  currentThread().setPriority(oldPriority );
 }

 -Tim

 Rui Zhang wrote:

  Hi all,
 
Is there any infrastruture availabe (or at least any possiblities) 
  in Tomcat to tune the QoS requests are receiving?
 
For instance, is it possible to give differentiated treatments to 
  requests of various importance, by granting them different amount of 
  resources, queueing them differently, etc?
 
I realise my questions might be a bit vague, as I don't have too 
  much insight about Tomcat. All I'm looking for are some knobs in 
  Tomcat that we can turn to affect its performance, either observed 
  by different groups of requests or by all the requests on a whole. 
  If there are no such knobs at all, would it be possible to amend the 
  current Tomcat with it?
 
Any advices (or at least what readings I should do to acquire that
  knowledge) would be greatly appreciated.
 

 -
 To unsubscribe, e-mail: [EMAIL PROTECTED]
 For additional commands, e-mail: [EMAIL PROTECTED]



-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]

JDBC

[Ram Mahajan]

Hi All,

I am using Tomcat 4.1 in Jbuilder X. Can someone please let me know how to
define JDBC configuration in server.xml ?

I want to define a datasource, user, password, database server name and port
in the configuration.

Thanks in advance.

Ram

RE: Clustering problem with web.xml

[Ram Mahajan]

Hi All,

I am using Tomcat 3.3 and would like to know what properties I need to set
up in server.xml so that I can look up a datasource in the context. 

For example: initCtx.lookup(jdbc/OracleDatasource);

Thanks 
Ram

-Original Message-
From: Filip Hanik - Dev [mailto:[EMAIL PROTECTED] 
Sent: Thursday, May 13, 2004 10:52 AM
To: Tomcat Users List; [EMAIL PROTECTED]
Subject: Re: Clustering problem with web.xml


check your web.xml for a mistake
 The markup in the document following the root element must be 
 well-formed.

or open it in an xml editor, it will tell you right away

Filip

- Original Message - 
From: Gabriele Paciucci [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Thursday, May 13, 2004 6:09 AM
Subject: Clustering problem with web.xml



Hi Tomcat user,
I'm trying to setup a in memory session replication with tomcat.

I have:
-tomcat 5.0.24
-java 1.4.2_04
- Red Hat Enterprise Linux 3

I have two machine dl580-1 and dl580-2 with tcp/ip and multicast enabled.
this 
is the cluster part of server.xml.

   Cluster className=org.apache.catalina.cluster.tcp.SimpleTcpCluster
 
managerClassName=org.apache.catalina.cluster.session.DeltaManager
 expireSessionsOnShutdown=false
 useDirtyFlag=true

Membership
className=org.apache.catalina.cluster.mcast.McastService
mcastAddr=224.0.0.1
mcastPort=45564
mcastFrequency=500
mcastDropTime=3000/

Receiver

className=org.apache.catalina.cluster.tcp.ReplicationListener
tcpListenAddress=auto
tcpListenPort=4001
tcpSelectorTimeout=100
tcpThreadCount=6/

Sender

className=org.apache.catalina.cluster.tcp.ReplicationTransmitter
replicationMode=pooled/

Valve 
className=org.apache.catalina.cluster.tcp.ReplicationValve
 
filter=.*\.gif;.*\.js;.*\.jpg;.*\.htm;.*\.html;.*\.txt;/
/Cluster

when I try to put the label distributable/ in 
jakarta-tomcat-5.0.24/webapps/jsp-examples/WEB-INF/web.xml
I recive in the catalina.out these errors:

INFO: Installing web application at context path /jsp-examples from URL 
file:/home/tomcat/jakarta-tomcat-5.0.24/webapps/jsp-examples
May 13, 2004 12:50:11 PM org.apache.commons.digester.Digester fatalError
SEVERE: Parse Fatal Error at line 21 column 2: The markup in the document 
following the root element must be well-formed.
org.xml.sax.SAXParseException: The markup in the document following the root

element must be well-formed.
at 
org.apache.xerces.util.ErrorHandlerWrapper.createSAXParseException(Unknown 
Source)
at org.apache.xerces.util.ErrorHandlerWrapper.fatalError(Unknown 
Source)
at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown
Source)
at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown
Source)
at org.apache.xerces.impl.XMLScanner.reportFatalError(Unknown
Source)
at 
org.apache.xerces.impl.XMLDocumentScannerImpl$TrailingMiscDispatcher.dispatc
h(Unknown 
Source)
at 
org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown 
Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown
Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown
Source)
at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
at org.apache.commons.digester.Digester.parse(Digester.java:1548)
at 
org.apache.catalina.startup.ContextConfig.applicationConfig(ContextConfig.ja
va:263)
at 
org.apache.catalina.startup.ContextConfig.start(ContextConfig.java:624)
at 
org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:
216)
at 
org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSuppor
t.java:119)
at 
org.apache.catalina.core.StandardContext.start(StandardContext.java:4268)
at 
org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:8
23)
at 
org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:807)
at 
org.apache.catalina.core.StandardHost.addChild(StandardHost.java:595)
at 
org.apache.catalina.core.StandardHostDeployer.install(StandardHostDeployer.j
ava:277)
at 
org.apache.catalina.core.StandardHost.install(StandardHost.java:832)
at 
org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:683
)
at 
org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:432)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:964)
at 
org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:349)
at 
org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSuppor
t.java:119)
at