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

Alex Kirin Fri, 01 Jul 2005 05:43:31 -0700

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 ofmemory exceptions every now and then, but the leaks were inour code.
Are you sure you've increased the upper limit of the VM tosomething 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 dayafter restarting tomcat. There were no problems with the installation ofJava or magnolia. It seems it can't cope with the load of traffic? It'sour first implementation with magnolia, so we're rather concerned nowabout using it for other projects.
We are running magnolia 2.02 on Tomcat 5.0.28 using java 1.5.0_02, onWindows 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() paraservlet 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)
atorg.apache.slide.jcr.core.observation.ObservationManagerFactory.<i
nit>(ObservationManagerFactory.java:92)
atorg.apache.slide.jcr.core.RepositoryImpl.getObservationManagerFact
ory(RepositoryImpl.java:376)
atorg.apache.slide.jcr.core.WorkspaceImpl.getObservationManager(Work
spaceImpl.java:865)
atorg.apache.slide.jcr.core.RepositoryImpl.<init>(RepositoryImpl.java:291)atorg.apache.slide.jcr.core.RepositoryFactory.getRepository(Reposito
ryFactory.java:281)
atorg.apache.jsp.templates.jsp.novasoft.global.navHoriz_jsp._jspServ
ice(navHoriz_jsp.java:110)
atorg.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
atorg.apache.jasper.servlet.JspServletWrapper.service(JspServletWrap
per.java:324)
atorg.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)
atorg.apache.catalina.core.ApplicationFilterChain.internalDoFilter(A
pplicationFilterChain.java:237)
atorg.apache.catalina.core.ApplicationFilterChain.doFilter(Applicati
onFilterChain.java:157)
atorg.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationD
ispatcher.java:704)
atorg.apache.catalina.core.ApplicationDispatcher.doInclude(Applicati
onDispatcher.java:590)
atorg.apache.catalina.core.ApplicationDispatcher.include(Application
Dispatcher.java:510)
atorg.apache.taglibs.standard.tag.common.core.ImportSupport.acquireS
tring(ImportSupport.java:314)
atorg.apache.taglibs.standard.tag.common.core.ImportSupport.doEndTag
(ImportSupport.java:179)
atorg.apache.jsp.templates.jsp.novasoft.templateStdLayout.stdLayout_
jsp._jspx_meth_c_import_2

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



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



--
Regards,
Alex


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

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

Reply via email to