So how is the performance of Tomcat 4.1.3 comparing to 4.0? Bill
"Shapira, Yoav" wrote: > Howdy, > I know you already solved the problem (was userid). > > As an aside, it's a bad idea to unpack 3rd party jars. You probably > want to rename classes12.zip to classes12.jar so tomcat will pick it up. > > Yoav Shapira > Millennium ChemInformatics > > >-----Original Message----- > >From: Victor Popiol [mailto:[EMAIL PROTECTED]] > >Sent: Thursday, June 20, 2002 4:24 AM > >To: Tomcat Users List > >Subject: RE: Tomcat 4 performance issues - Trying Tomcat 4.1.3 Beta > > > >Hi. I installed Tomcat 4.1.3 and deployed my application. But I > >consistently get en error trying to connect to our database. This error > >only happens in Tomcat 4.1.3. > > > >The database is Oracle 8.1.7 and I expanded the classes from the > >classes12.zip JDBC distributable (as I had done on Tomcat 4.03). > > > >The error happens when trying to open the connection. To isolate the > issue, > >I wrote a small jsp page that exercise the data source to get the > >conection. Here it is: > > > ><%@ page contentType="text/html" > >import="javax.naming.*,java.sql.*,javax.sql.*" %> > ><html> > ><body> > ><% > > System.out.println("Starting<BR>"); > > Context initCtx = new InitialContext(); > > Context envCtx = (Context) initCtx.lookup("java:comp/env"); > > DataSource ds = (DataSource) > > envCtx.lookup("jdbc/duwi"); > > if (ds != null) { > > System.out.println("Data Source is not null<BR>"); > > Connection conn = ds.getConnection(); > > conn.close(); > > } > >%> > >Ready! > ></body> > ></html> > > > >The execution of this jsp throwas the following exception: > > > >org.apache.jasper.JasperException > > at > >org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.j > ava: > >232) > > at > >org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:289 > ) > > at > org.apache.jasper.servlet.JspServlet.service(JspServlet.java:240) > > at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) > > at > >org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Applic > atio > >nFilterChain.java:247) > > at > >org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFil > terC > >hain.java:193) > > at > >org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperVal > ve.j > >ava:260) > > at > >org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext. > invo > >keNext(StandardPipeline.java:646) > > at > >org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java: > 483) > > at > >org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) > > at > >org.apache.catalina.core.StandardContextValve.invoke(StandardContextVal > ve.j > >ava:191) > > at > >org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext. > invo > >keNext(StandardPipeline.java:646) > > at > >org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java: > 483) > > at > >org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) > > at > >org.apache.catalina.core.StandardContext.invoke(StandardContext.java:23 > 49) > > at > >org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.jav > a:18 > >0) > > at > >org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext. > invo > >keNext(StandardPipeline.java:646) > > at > >org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherV > alve > >.java:170) > > at > >org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext. > invo > >keNext(StandardPipeline.java:644) > > at > >org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.jav > a:17 > >1) > > at > >org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext. > invo > >keNext(StandardPipeline.java:644) > > at > >org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java: > 483) > > at > >org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) > > at > >org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve > .jav > >a:174) > > at > >org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext. > invo > >keNext(StandardPipeline.java:646) > > at > >org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java: > 483) > > at > >org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) > > at > >org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:223) > > at > >org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:4 > 05) > > at > >org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process > Conn > >ection(Http11Protocol.java:376) > > at > >org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:5 > 08) > > at > >org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPoo > l.ja > >va:518) > > at java.lang.Thread.run(Thread.java:479) > > > > > >root cause > > > >java.lang.NullPointerException > > at java.util.Hashtable.put(Hashtable.java:375) > > at > org.apache.commons.dbcp.BasicDataSource.createDataSource(Unknown > >Source) > > at org.apache.commons.dbcp.BasicDataSource.getConnection(Unknown > >Source) > > at org.apache.jsp.test$jsp._jspService(Unknown Source) > > at > >org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:109) > > at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) > > at > >org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.j > ava: > >188) > > at > >org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:289 > ) > > at > org.apache.jasper.servlet.JspServlet.service(JspServlet.java:240) > > at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) > > at > >org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Applic > atio > >nFilterChain.java:247) > > at > >org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFil > terC > >hain.java:193) > > at > >org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperVal > ve.j > >ava:260) > > at > >org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext. > invo > >keNext(StandardPipeline.java:646) > > at > >org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java: > 483) > > at > >org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) > > at > >org.apache.catalina.core.StandardContextValve.invoke(StandardContextVal > ve.j > >ava:191) > > at > >org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext. > invo > >keNext(StandardPipeline.java:646) > > at > >org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java: > 483) > > at > >org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) > > at > >org.apache.catalina.core.StandardContext.invoke(StandardContext.java:23 > 49) > > at > >org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.jav > a:18 > >0) > > at > >org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext. > invo > >keNext(StandardPipeline.java:646) > > at > >org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherV > alve > >.java:170) > > at > >org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext. > invo > >keNext(StandardPipeline.java:644) > > at > >org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.jav > a:17 > >1) > > at > >org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext. > invo > >keNext(StandardPipeline.java:644) > > at > >org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java: > 483) > > at > >org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) > > at > >org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve > .jav > >a:174) > > at > >org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext. > invo > >keNext(StandardPipeline.java:646) > > at > >org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java: > 483) > > at > >org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) > > at > >org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:223) > > at > >org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:4 > 05) > > at > >org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process > Conn > >ection(Http11Protocol.java:376) > > at > >org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:5 > 08) > > at > >org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPoo > l.ja > >va:518) > > at java.lang.Thread.run(Thread.java:479) > > > >Any ideas? > > > >Thanks > >Victor > > > > > > > >------------------------------- > >Thanks. > > > >We'll try it and let you know. > > > >Regards > >Victor > > > >-----Original Message----- > >From: Remy Maucherat [mailto:[EMAIL PROTECTED]] > >Sent: Wednesday, June 19, 2002 1:04 PM > >To: Tomcat Users List > >Subject: Re: Tomcat 4 performance issues > > > > > >Victor Popiol wrote: > >> Hi all. > >> > >> We have deployed a new web application to our production server and > have > >noticed that the performance is terrible. > >> > >> We then configured 2 test environments running Tomcat 4 and JRun 4. > After > >testing we determined that JRun's performance (out of the box) is > orders of > >magnitude better than Tomcat's. > >> > >> We believe that our Tomcat configuration could be twicked to improve > >performance. > >> > >> These are the details about our deployment: > >> - Win 2K, 1 CPU 700 Mhz, 512 M Ram > >> - IIS front end using isapi_redirector.dll > >> - One Tomcat instance > >> - Minimum memory (-Xms) is 128 MB. Maximum memory is 256 MB > >> - Server logging includes the Access Log > >> - Application uses Struts > >> > >> We have twicked the AJP connector to preallocate 100 threads, grow up > to > >200 and allow a queue of up to 50 requests. We have never reached these > >limits. > >> > >> The main and evident symptom is that the requests to Tomcat seam to > be > >serialized and handled one by one. Also the CPU utilization is pegged > at > >100% while the requests are being served. > >> > >> Before making a decision to replace Tomcat, I would like to hear some > >advice regarding configuration and tuning. > > > >Applications with pages having lots of tags can be very slow when using > >Sun JVMs because of a Sun JVM bug. > >Jasper 2 (included in Tomcat 4.1.3 Beta) fixes the code it generates, > so > >that we don't trigger the JVM bug anymore. > > > >IMO, you should try Tomcat 4.1.3 to see if it helps. > > > >Remy > > > > > >-- > >To unsubscribe, e-mail: <mailto:tomcat-user- > >[EMAIL PROTECTED]> > >For additional commands, e-mail: <mailto:tomcat-user- > >[EMAIL PROTECTED]> > > > > > >-- > >To unsubscribe, e-mail: <mailto:tomcat-user- > >[EMAIL PROTECTED]> > >For additional commands, e-mail: <mailto:tomcat-user- > >[EMAIL PROTECTED]> > > -- > To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> > For additional commands, e-mail: <mailto:[EMAIL PROTECTED]> -- To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> For additional commands, e-mail: <mailto:[EMAIL PROTECTED]>
