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From "Chakravarthy, Sundar" <schakravar...@doas.ga.gov>
Subject Tomcat 4.1.18 - Scalability Issue ?
Date Wed, 26 Feb 2003 14:02:22 GMT
Hi  ,

I have a single instance of Tomcat in the following environment,

Apache 2.x - Mod_jk2 - Tomcat 4.1.18 - - - Solaris 5.8

	- 2 GB RAM  , Xms512m, Xmx512m

However, when I try to stress-test Tomcat with 10 or more Threads using
Jmeter, I get the following exception quite consistently.

Is is a bug ?


Thanks
Sundar

2003-02-25 11:34:03 StandardWrapperValve[jsp]: Servlet.service() for
servlet jsp threw exception
javax.servlet.ServletException: org/apache/jasper/runtime/HttpJspBase
        at
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:249)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
        at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Applica
tionFilterChain.java:247)
        at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilt
erChain.java:193)
        at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValv
e.java:260)
        at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.i
nvokeNext(StandardPipeline.java:643)
        at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:4
80)
        at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
        at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValv
e.java:191)
        at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.i
nvokeNext(StandardPipeline.java:643)
        at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:4
80)
        at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
        at
org.apache.catalina.core.StandardContext.invoke(StandardContext.java:241
5)
        at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java
:180)
        at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.i
nvokeNext(StandardPipeline.java:643)
        at
org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherVa
lve.java:170)
        at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.i
nvokeNext(StandardPipeline.java:641)
        at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java
:172)
        at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.i
nvokeNext(StandardPipeline.java:641)
        at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:4
80)
        at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
        at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.
java:174)
        at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.i
nvokeNext(StandardPipeline.java:643)
        at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:4
80)
        at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
        at
org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:223)
        at
org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:261)
        at
org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:360)
        at
org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:632)
        at
org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:
590)
        at
org.apache.jk.common.SocketConnection.runIt(ChannelSocket.java:707)
        at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool
.java:530)
        at java.lang.Thread.run(Thread.java:536)
----- Root Cause -----
java.lang.NoClassDefFoundError: org/apache/jasper/runtime/HttpJspBase
        at java.lang.ClassLoader.defineClass0(Native Method)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:502)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:431)
        at
org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:215)
        at
org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:131)
        at
org.apache.jasper.JspCompilationContext.load(JspCompilationContext.java:
504)
        at
org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapper
.java:145)
        at
org.apache.jasper.compiler.Compiler.isOutDated(Compiler.java:411)
        at
org.apache.jasper.compiler.Compiler.isOutDated(Compiler.java:361)
        at
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.ja
va:472)
        at
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.ja
va:184)
        at
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:295)
        at
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
        at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Applica
tionFilterChain.java:247)
        at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilt
erChain.java:193)
        at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValv
e.java:260)
        at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.i
nvokeNext(StandardPipeline.java:643)
        at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:4
80)
        at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
        at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValv
e.java:191)
        at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.i
nvokeNext(StandardPipeline.java:643)
        at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:4
80)
        at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
        at
org.apache.catalina.core.StandardContext.invoke(StandardContext.java:241
5)
        at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java
:180)
        at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.i
nvokeNext(StandardPipeline.java:643)
        at
org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherVa
lve.java:170)
        at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.i
nvokeNext(StandardPipeline.java:641)
        at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java
:172)
        at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.i
nvokeNext(StandardPipeline.java:641)
        at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:4
80)
        at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
        at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.
java:174)
        at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.i
nvokeNext(StandardPipeline.java:643)
        at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:4
80)
        at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
        at
org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:223)
        at
org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:261)
        at
org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:360)
        at
org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:632)
        at
org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:
590)
        at
org.apache.jk.common.SocketConnection.runIt(ChannelSocket.java:707)
        at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool
.java:530)
        at java.lang.Thread.run(Thread.java:536)


Thanks
Sundar

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