Re: [magnolia-user] Out Of Memory on public instance

Fri, 01 Jul 2005 06:11:41 -0700

Do you know java service wrapper (http://wrapper.tanukisoftware.org) ? I use it but i'm not sure if it can monitor log files, although, it can monitor console output. 

Andreas Weder wrote:


Alex,

here is the home page:

http://kodu.neti.ee/~risto/sec/

Sec.pl is a Perl script and so called event correlation tool.

Andreas


-----Original Message-----
From: [email protected] [mailto:[EMAIL PROTECTED]
Sent: Freitag, 1. Juli 2005 14:44
To: [email protected]
Subject: Re: [magnolia-user] Out Of Memory on public instance
Andreas, 

what is SEC? Could you plz give a link to that?



Andreas Weder wrote:


Dear John,

we've been using Magnolia 2.03 on Tomcat 5.0 using Java 1.4.2_06
for a site with roughly 25000 visits per month (that's not hits
or pages served, it's more than that). We did get some out of memory exceptions every now and then, but the leaks were in our code.
Are you sure you've increased the upper limit of the VM to something reasonable? We're at least using 512 MB for each VM. 
Values like 128 MB are just not good enough, especially not
if you're activating often. It's not so much a Magnolia thing,
I think.

What we did get every now and then, however, were exceptions
due to "too many open files". Again, this may very well be
caused by our code sending newsletters, but may have other
reasons (Jackrabbit, maybe even Magnolia). 
What I've done is that I've used SEC to monitor log files for
this exception and also an out of memory (just in case, it
never occurred again since we fixed the problems in our code).
If SEC detects them, the affected instance is restarted.

Works extremely reliable ever since. And as I said: the excep-
tions occur only very rarely.

Andreas
_________________________________________________________________
NOSE applied intelligence ag [www] http://www.nose.ch 
                                 [email] [EMAIL PROTECTED]
andreas weder                     [pgp id]           0x44117CA2
hardturmstrasse 171               [office]      +41-1-277 57 11
8005 zurich                       [direct]      +41-1-277 57 24
switzerland                       [fax]         +41-1-277 57 12




-----Original Message-----
From: [email protected] [mailto:[EMAIL PROTECTED]
Sent: Freitag, 1. Juli 2005 14:27
To: [email protected]
Subject: [magnolia-user] Out Of Memory on public instance
We've recently launched the public version of a site using magnolia, however we are now receiving and OutOfMemory error, normally
about a day
after restarting tomcat. There were no problems with the
installation of
Java or magnolia. It seems it can't cope with the load of traffic? It's our first implementation with magnolia, so we're rather concerned now about using it for other projects.
We are running magnolia 2.02 on Tomcat 5.0.28 using java 1.5.0_02, on Windows 2003 Server cluster. Extract from log file below. 

Can anyone help with this?

TIA

John

--

John Olival
Managing Director
Novasoft Explican


sample output of magnoliaPublic_log.2005-07-01.log
2005-07-01 13:40:32 ApplicationDispatcher[] El Servlet.service() para servlet jsp lanzó una excepción 
java.lang.OutOfMemoryError: unable to create new native thread
        at java.lang.Thread.start0(Native Method)
        at java.lang.Thread.start(Thread.java:574)
at org.apache.slide.jcr.core.observation.ObservationManagerFactory.<i 
nit>(ObservationManagerFactory.java:92)
at org.apache.slide.jcr.core.RepositoryImpl.getObservationManagerFact 
ory(RepositoryImpl.java:376)
at org.apache.slide.jcr.core.WorkspaceImpl.getObservationManager(Work 
spaceImpl.java:865)
at org.apache.slide.jcr.core.RepositoryImpl.<init>(RepositoryImpl.java:291) at org.apache.slide.jcr.core.RepositoryFactory.getRepository(Reposito 
ryFactory.java:281)
at org.apache.jsp.templates.jsp.novasoft.global.navHoriz_jsp._jspServ 
ice(navHoriz_jsp.java:110)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94) 
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrap 
per.java:324)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292) 
        at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(A 
pplicationFilterChain.java:237)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(Applicati 
onFilterChain.java:157)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationD 
ispatcher.java:704)
at org.apache.catalina.core.ApplicationDispatcher.doInclude(Applicati 
onDispatcher.java:590)
at org.apache.catalina.core.ApplicationDispatcher.include(Application 
Dispatcher.java:510)
at org.apache.taglibs.standard.tag.common.core.ImportSupport.acquireS 
tring(ImportSupport.java:314)
at org.apache.taglibs.standard.tag.common.core.ImportSupport.doEndTag 
(ImportSupport.java:179)
at org.apache.jsp.templates.jsp.novasoft.templateStdLayout.stdLayout_ 
jsp._jspx_meth_c_import_2

(stdLayout_jsp.java:234)
at org.apache.jsp.templates.jsp.novasoft.templateStdLayout.stdLayout_ 
jsp._jspService(stdLayout_jsp.java:80)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94) 
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrap 
per.java:324)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292) 
        at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(A 
pplicationFilterChain.java:237)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(Applicati 
onFilterChain.java:157)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationD 
ispatcher.java:704)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(Appl 
icationDispatcher.java:474)
at org.apache.catalina.core.ApplicationDispatcher.doForward(Applicati 
onDispatcher.java:409)
at org.apache.catalina.core.ApplicationDispatcher.forward(Application 
Dispatcher.java:312)
        at info.magnolia.cms.Dispatcher.dispatch(Dispatcher.java:65)
at info.magnolia.cms.servlets.EntryServlet.doGet(EntryServlet.java:121) 
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(A 
pplicationFilterChain.java:237)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(Applicati 
onFilterChain.java:157)
at info.magnolia.cms.Filter.MultipartRequestFilter.doFilter(Multipart 
RequestFilter.java:76)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(A 
pplicationFilterChain.java:186)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(Applicati 
onFilterChain.java:157)
at info.magnolia.cms.Filter.ContentTypeFilter.doFilter(ContentTypeFil 
ter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(A 
pplicationFilterChain.java:186)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(Applicati 
onFilterChain.java:157)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapp 
erValve.java:214)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardV 
alveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline. 
java:520)
at org.apache.catalina.core.StandardContextValve.invokeInternal(Stand 
ardContextValve.java:198)
at org.apache.catalina.core.StandardContextValve.invoke(StandardConte 
xtValve.java:152)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardV 
alveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline. 
java:520)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValv 
e.java:137)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardV 
alveContext.java:104)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValv 
e.java:118)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardV 
alveContext.java:102)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline. 
java:520)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngine 
Valve.java:109)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardV 
alveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline. 
java:520)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929) at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160) at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:300) at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:374) 
        at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:743)
at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket 
.java:675)
at org.apache.jk.common.SocketConnection.runIt(ChannelSocket.java:866) at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(Thre 
adPool.java:683)
        at java.lang.Thread.run(Thread.java:595)



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for list details see
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--
Regards,
Alex


----------------------------------------------------------------
for list details see
http://www.magnolia.info/en/magnolia/developer.html
----------------------------------------------------------------





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for list details see
http://www.magnolia.info/en/magnolia/developer.html
----------------------------------------------------------------





--
Regards,
Alex


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