I only have questions rather than answers... I'd been interested to know how you're automated emulation of 100 users works - could it be that you have two requests operating on the same form and your form has some kind of nested/mapped/indexed properties in it? Do the 100 users all have separate sessions and whats the scope of your form?
Are you sure you're running Struts 1.1 (the lines number from the stack trace don't seem to tie up with the 1.1 source)? Niall ----- Original Message ----- From: "Tom Vekemans" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Wednesday, May 05, 2004 6:53 PM Subject: Struts failing under load ? Hi, We are currently stress-testing a struts-based application. We are using JBoss 3.2.3 (with integrated tomcat) on a 2-processor Dell with 1 Gig of RAM. We use struts v1.1. The application just runs fine until we get to around 100 concurrent users. >From that point on, we get a "java.lang.IllegalArgumentException: No bean specified" exception (reduced stack trace below). Other mails about this subject almost always talk about omitted beans in JSP's or malconfigured struts-config.xml files. However, these 100 users are "automated" (it's a program) and all performing the same scenario. It runs fine with 50 users so I don't suspect any problems in the struts-config.xml file. Does anyone have a suggestion? Thanks in advance, Tom Vekemans 2004-05-05 16:20:28,709 DEBUG [org.apache.struts.util.RequestUtils] Creating new ActionForm instance of type 'be.mil.cccis.bcc17.fact17.web.invoice.DisplaySavedInvoiceFormBean' 2004-05-05 16:20:28,709 DEBUG [org.apache.struts.util.RequestUtils] --> [EMAIL PROTECTED] 2004-05-05 16:20:28,709 DEBUG [org.apache.struts.action.RequestProcessor] Storing ActionForm bean instance in scope 'session' under attribute key 'displaySavedInvoiceForm' 2004-05-05 16:20:28,709 DEBUG [org.apache.struts.action.RequestProcessor] Populating bean properties from this request 2004-05-05 16:20:28,709 ERROR [org.jboss.web.localhost.Engine] StandardWrapperValve[action]: Servlet.service() for servlet action threw exception javax.servlet.ServletException: BeanUtils.populate at org.apache.struts.util.RequestUtils.populate(RequestUtils.java:1098) at org.apache.struts.action.RequestProcessor.processPopulate(RequestProcessor.j ava:816) at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:254) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1420) at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:502) at javax.servlet.http.HttpServlet.service(HttpServlet.java:740) [...other tomcat-related stuff] at java.lang.Thread.run(Thread.java:534) 2004-05-05 16:20:28,709 DEBUG [org.apache.struts.action.RequestProcessor] processForwardConfig(ForwardConfig[name=next,path=/protected/invoice/budgeti ze_invoice.jsp,redirect=false,contextRelative=false]) 2004-05-05 16:20:28,756 ERROR [org.jboss.web.localhost.Engine] ----- Root Cause ----- java.lang.IllegalArgumentException: No bean specified at org.apache.commons.beanutils.PropertyUtils.getPropertyDescriptor(PropertyUti ls.java:837) at org.apache.commons.beanutils.BeanUtils.setProperty(BeanUtils.java:934) at org.apache.commons.beanutils.BeanUtils.populate(BeanUtils.java:808) at org.apache.struts.util.RequestUtils.populate(RequestUtils.java:1096) at org.apache.struts.action.RequestProcessor.processPopulate(RequestProcessor.j ava:816) at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:254) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1420) at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:502) at javax.servlet.http.HttpServlet.service(HttpServlet.java:740) [...other tomcat-related stuff] at java.lang.Thread.run(Thread.java:534) --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
