monitor memory usage

, ,
1

Hi,

how can I monitor memory usage on the MWS?
I’ve tried to use the wm_memorymonitor portlet but it throws an exception.

java.lang.NullPointerException
at ui.portlets.wm_memorymonitor._default._jspService(_default.java:676)
at com.webMethods.portal.framework.presentation.handlers.Jsp.render(Jsp.java:288)
at com.webMethods.portal.framework.presentation.handlers.Jsp.render(Jsp.java:228)
at com.webMethods.portal.framework.portlet.beans.JspPortletBean.generateContent(JspPortletBean.java:147)
at com.webMethods.portal.framework.portlet.beans.JspPortletBean.getContentInternal(JspPortletBean.java:76)
at com.webMethods.portal.framework.portlet.beans.BasicPortletBean.getContent(BasicPortletBean.java:143)
at com.webMethods.portal.mech.portlet.impl.PortletMechanics.getPortletContent(PortletMechanics.java:96)
at com.webMethods.portal.mech.storage.page.PortletHelper.renderContent(PortletHelper.java:428)
at com.webMethods.portal.mech.storage.page.PortletHelper.renderContent(PortletHelper.java:400)
at com.webMethods.portal.framework.presentation.renderers.DefaultRenderer.renderPageContent(DefaultRenderer.java:304)
at com.webMethods.portal.framework.presentation.renderers.DefaultRenderer.render(DefaultRenderer.java:215)
at com.webMethods.portal.framework.presentation.PresentationManager.handlePres(PresentationManager.java:370)
at com.webMethods.portal.framework.dispatch.DispatchManager.pres(DispatchManager.java:620)
at com.webMethods.portal.framework.dispatch.DispatchManager.handle(DispatchManager.java:460)
at com.webMethods.portal.framework.dispatch.DispatchManager.handleDispatch(DispatchManager.java:370)
at com.webMethods.portal.framework.impl.PortalServlet.service(PortalServlet.java:266)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1166)
at com.webMethods.portal.framework.impl.NTLMFilter.doFilter(NTLMFilter.java:50)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.webMethods.caf.faces.servlet.GZIPFilter.doFilter(GZIPFilter.java:42)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388)
at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418)
at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:230)
at org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at org.mortbay.jetty.Server.handle(Server.java:326)
at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:923)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:547)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409)
at org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:451)

Thanks
Bruno

2

Could you do me a quick favor? Could you tell me what version of MWS you are using and how you accessed the wm_memorymonitor?

Thanks,
–mark

3

Hi,

I logged in as sysadmin and on the Analysis window selected “Memory Monitor”. That’s it.

Here’s the version:
Version: 8.0.2.0.50
Build Date: 2010-05-18
Installed Fixes: MWS_8.0_SP2_Fix2_MWS-5264,MWS_8.0_SP2_Fix2

Thanks
Bruno

4

That seems straightforward enough :slight_smile: It is clearly a defect. If you’d like to get a fix for this, please file an SR.

5

Hi,

ok, I’ll do that.
Is this the way recommended by SAG to monitor memory usage on MWS?

Thanks
Bruno

6

With 8.x, you can attach a JMX monitor which will give you richer information and integrate with your JMX tools (if you use any). In our upcoming 8.2 release we have a new suite of diagnostic tools and portlets that will allow for more interactive examination and investigation of the MWS runtime as well.