Can anoyone help determine the cause of a Jenkins crash.

[MDKF]

Hi All,
 My Jenkins server died last night. I found the following text in the error log. Can anyone help me decipher what happened? Ive had these out of memory exceptions before.


Nov 11, 2012 12:39:50 AM winstone.Logger logInternal
SEVERE: Error while serving http://nwd2hscjnks/job/VectorGenerator/api/xml
java.lang.reflect.InvocationTargetException
    at sun.reflect.GeneratedMethodAccessor106.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.kohsuke.stapler.Function$InstanceFunction.invoke(Function.java:288)
    at org.kohsuke.stapler.Function.bindAndInvoke(Function.java:151)
    at org.kohsuke.stapler.Function.bindAndInvokeAndServeResponse(Function.java:90)
    at org.kohsuke.stapler.MetaClass$1.doDispatch(MetaClass.java:111)
    at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53)
    at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:574)
    at org.kohsuke.stapler.Stapler.invoke(Stapler.java:659)
    at org.kohsuke.stapler.MetaClass$4.doDispatch(MetaClass.java:203)
    at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53)
    at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:574)
    at org.kohsuke.stapler.Stapler.invoke(Stapler.java:659)
    at org.kohsuke.stapler.MetaClass$6.doDispatch(MetaClass.java:241)
    at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53)
    at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:574)
    at org.kohsuke.stapler.Stapler.invoke(Stapler.java:659)
    at org.kohsuke.stapler.Stapler.invoke(Stapler.java:488)
    at org.kohsuke.stapler.Stapler.service(Stapler.java:162)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:45)
    at winstone.ServletConfiguration.execute(ServletConfiguration.java:248)
    at winstone.RequestDispatcher.forward(RequestDispatcher.java:333)
    at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:376)
    at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:95)
    at hudson.util.PluginServletFilter.doFilter(PluginServletFilter.java:87)
    at winstone.FilterConfiguration.execute(FilterConfiguration.java:194)
    at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:366)
    at hudson.security.csrf.CrumbFilter.doFilter(CrumbFilter.java:47)
    at winstone.FilterConfiguration.execute(FilterConfiguration.java:194)
    at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:366)
    at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:84)
    at hudson.security.UnwrapSecurityExceptionFilter.doFilter(UnwrapSecurityExceptionFilter.java:51)
    at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
    at org.acegisecurity.ui.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:166)
    at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
    at org.acegisecurity.providers.anonymous.AnonymousProcessingFilter.doFilter(AnonymousProcessingFilter.java:125)
    at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
    at org.acegisecurity.ui.rememberme.RememberMeProcessingFilter.doFilter(RememberMeProcessingFilter.java:142)
    at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
    at org.acegisecurity.ui.AbstractProcessingFilter.doFilter(AbstractProcessingFilter.java:271)
    at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
    at org.acegisecurity.ui.basicauth.BasicProcessingFilter.doFilter(BasicProcessingFilter.java:173)
    at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
    at jenkins.security.ApiTokenFilter.doFilter(ApiTokenFilter.java:63)
    at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
    at org.acegisecurity.context.HttpSessionContextIntegrationFilter.doFilter(HttpSessionContextIntegrationFilter.java:249)
    at hudson.security.HttpSessionContextIntegrationFilter2.doFilter(HttpSessionContextIntegrationFilter2.java:66)
    at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
    at hudson.security.ChainedServletFilter.doFilter(ChainedServletFilter.java:76)
    at hudson.security.HudsonFilter.doFilter(HudsonFilter.java:164)
    at winstone.FilterConfiguration.execute(FilterConfiguration.java:194)
    at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:366)
    at org.kohsuke.stapler.compression.CompressionFilter.doFilter(CompressionFilter.java:50)
    at winstone.FilterConfiguration.execute(FilterConfiguration.java:194)
    at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:366)
    at hudson.util.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:81)
    at winstone.FilterConfiguration.execute(FilterConfiguration.java:194)
    at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:366)
    at winstone.RequestDispatcher.forward(RequestDispatcher.java:331)
    at winstone.RequestHandlerThread.processRequest(RequestHandlerThread.java:215)
    at winstone.RequestHandlerThread.run(RequestHandlerThread.java:138)
    at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
    at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
    at java.util.concurrent.FutureTask.run(Unknown Source)
    at winstone.BoundedExecutorService$1.run(BoundedExecutorService.java:77)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)
Caused by: java.io.IOException: Failed to write url
    at org.kohsuke.stapler.export.Property.writeTo(Property.java:119)
    at org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:179)
    at org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:176)
    at org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:176)
    at org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:176)
    at org.kohsuke.stapler.export.Property.writeValue(Property.java:231)
    at org.kohsuke.stapler.export.Property.writeValue(Property.java:181)
    at org.kohsuke.stapler.export.Property.writeValue(Property.java:136)
    at org.kohsuke.stapler.export.Property.writeTo(Property.java:113)
    at org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:179)
    at org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:176)
    at org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:176)
    at org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:176)
    at org.kohsuke.stapler.export.Model.writeTo(Model.java:152)
    at org.kohsuke.stapler.ResponseImpl.serveExposedBean(ResponseImpl.java:200)
    at hudson.model.Api.doXml(Api.java:87)
    ... 69 more
Caused by: java.lang.reflect.InvocationTargetException
    at sun.reflect.GeneratedMethodAccessor97.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.kohsuke.stapler.export.MethodProperty.getValue(MethodProperty.java:66)
    at org.kohsuke.stapler.export.Property.writeTo(Property.java:113)
    ... 84 more
Caused by: java.lang.OutOfMemoryError: Java heap space
    at java.nio.HeapByteBuffer.<init>(Unknown Source)
    at java.nio.ByteBuffer.allocate(Unknown Source)
    at sun.nio.cs.StreamEncoder.<init>(Unknown Source)
    at sun.nio.cs.StreamEncoder.<init>(Unknown Source)
    at sun.nio.cs.StreamEncoder.forOutputStreamWriter(Unknown Source)
    at java.io.OutputStreamWriter.<init>(Unknown Source)
    at hudson.Util.encode(Util.java:677)
    at hudson.model.AbstractItem.getAbsoluteUrl(AbstractItem.java:421)
    at hudson.model.Run.getAbsoluteUrl(Run.java:841)
    at sun.reflect.GeneratedMethodAccessor97.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.kohsuke.stapler.export.MethodProperty.getValue(MethodProperty.java:66)
    at org.kohsuke.stapler.export.Property.writeTo(Property.java:113)
    at org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:179)
    at org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:176)
    at org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:176)
    at org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:176)
    at org.kohsuke.stapler.export.Property.writeValue(Property.java:231)
    at org.kohsuke.stapler.export.Property.writeValue(Property.java:181)
    at org.kohsuke.stapler.export.Property.writeValue(Property.java:136)
    at org.kohsuke.stapler.export.Property.writeTo(Property.java:113)
    at org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:179)
    at org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:176)
    at org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:176)
    at org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:176)
    at org.kohsuke.stapler.export.Model.writeTo(Model.java:152)
    at org.kohsuke.stapler.ResponseImpl.serveExposedBean(ResponseImpl.java:200)
    at hudson.model.Api.doXml(Api.java:87)
    at sun.reflect.GeneratedMethodAccessor106.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
Nov 11, 2012 12:39:56 AM hudson.triggers.SafeTimerTask run
SEVERE: Timer task hudson.slaves.NodeProvisioner$NodeProvisionerInvoker@11e6131 failed
java.lang.OutOfMemoryError: Java heap space
    at java.util.Arrays.copyOf(Unknown Source)
    at java.util.Arrays.copyOf(Unknown Source)
    at java.util.Vector.ensureCapacityHelper(Unknown Source)
    at java.util.Vector.addElement(Unknown Source)
    at java.text.RBTableBuilder.addExpansion(Unknown Source)
    at java.text.RBTableBuilder.addExpandOrder(Unknown Source)
    at java.text.RBTableBuilder.addComposedChars(Unknown Source)
    at java.text.RBTableBuilder.build(Unknown Source)
    at java.text.RBCollationTables.<init>(Unknown Source)
    at java.text.RuleBasedCollator.<init>(Unknown Source)
    at java.text.Collator.getInstance(Unknown Source)
    at java.text.Collator.getInstance(Unknown Source)
    at jenkins.model.Jenkins$8.<init>(Jenkins.java:1451)
    at jenkins.model.Jenkins.getComputers(Jenkins.java:1450)
    at hudson.model.ComputerSet.get_all(ComputerSet.java:93)
    at hudson.model.ComputerSet.getIdleExecutors(ComputerSet.java:169)
    at hudson.model.OverallLoadStatistics.computeIdleExecutors(OverallLoadStatistics.java:57)
    at hudson.slaves.NodeProvisioner.update(NodeProvisioner.java:194)
    at hudson.slaves.NodeProvisioner.access$000(NodeProvisioner.java:51)
    at hudson.slaves.NodeProvisioner$NodeProvisionerInvoker.doRun(NodeProvisioner.java:308)
    at hudson.triggers.SafeTimerTask.run(SafeTimerTask.java:54)
    at java.util.TimerThread.mainLoop(Unknown Source)
    at java.util.TimerThread.run(Unknown Source)
Nov 11, 2012 12:39:58 AM org.kohsuke.stapler.compression.CompressionFilter reportException
WARNING: Untrapped servlet exception
java.io.IOException: Failed to write url
    at org.kohsuke.stapler.export.Property.writeTo(Property.java:119)
    at org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:179)
    at org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:176)
    at org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:176)
    at org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:176)
    at org.kohsuke.stapler.export.Property.writeValue(Property.java:231)
    at org.kohsuke.stapler.export.Property.writeValue(Property.java:181)
    at org.kohsuke.stapler.export.Property.writeValue(Property.java:136)
    at org.kohsuke.stapler.export.Property.writeTo(Property.java:113)
    at org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:179)
    at org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:176)
    at org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:176)
    at org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:176)
    at org.kohsuke.stapler.export.Model.writeTo(Model.java:152)
    at org.kohsuke.stapler.ResponseImpl.serveExposedBean(ResponseImpl.java:200)
    at hudson.model.Api.doXml(Api.java:87)
    at sun.reflect.GeneratedMethodAccessor106.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.kohsuke.stapler.Function$InstanceFunction.invoke(Function.java:288)
    at org.kohsuke.stapler.Function.bindAndInvoke(Function.java:151)
    at org.kohsuke.stapler.Function.bindAndInvokeAndServeResponse(Function.java:90)
    at org.kohsuke.stapler.MetaClass$1.doDispatch(MetaClass.java:111)
    at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53)
    at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:574)
    at org.kohsuke.stapler.Stapler.invoke(Stapler.java:659)
    at org.kohsuke.stapler.MetaClass$4.doDispatch(MetaClass.java:203)
    at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53)
    at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:574)
    at org.kohsuke.stapler.Stapler.invoke(Stapler.java:659)
    at org.kohsuke.stapler.MetaClass$6.doDispatch(MetaClass.java:241)
    at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53)
    at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:574)
    at org.kohsuke.stapler.Stapler.invoke(Stapler.java:659)
    at org.kohsuke.stapler.Stapler.invoke(Stapler.java:488)
    at org.kohsuke.stapler.Stapler.service(Stapler.java:162)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:45)
    at winstone.ServletConfiguration.execute(ServletConfiguration.java:248)
    at winstone.RequestDispatcher.forward(RequestDispatcher.java:333)
    at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:376)
    at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:95)
    at hudson.util.PluginServletFilter.doFilter(PluginServletFilter.java:87)
    at winstone.FilterConfiguration.execute(FilterConfiguration.java:194)
    at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:366)
    at hudson.security.csrf.CrumbFilter.doFilter(CrumbFilter.java:47)
    at winstone.FilterConfiguration.execute(FilterConfiguration.java:194)
    at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:366)
    at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:84)
    at hudson.security.UnwrapSecurityExceptionFilter.doFilter(UnwrapSecurityExceptionFilter.java:51)
    at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
    at org.acegisecurity.ui.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:166)
    at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
    at org.acegisecurity.providers.anonymous.AnonymousProcessingFilter.doFilter(AnonymousProcessingFilter.java:125)
    at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
    at org.acegisecurity.ui.rememberme.RememberMeProcessingFilter.doFilter(RememberMeProcessingFilter.java:142)
    at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
    at org.acegisecurity.ui.AbstractProcessingFilter.doFilter(AbstractProcessingFilter.java:271)
    at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
    at org.acegisecurity.ui.basicauth.BasicProcessingFilter.doFilter(BasicProcessingFilter.java:173)
    at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
    at jenkins.security.ApiTokenFilter.doFilter(ApiTokenFilter.java:63)
    at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
    at org.acegisecurity.context.HttpSessionContextIntegrationFilter.doFilter(HttpSessionContextIntegrationFilter.java:249)
    at hudson.security.HttpSessionContextIntegrationFilter2.doFilter(HttpSessionContextIntegrationFilter2.java:66)
    at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
    at hudson.security.ChainedServletFilter.doFilter(ChainedServletFilter.java:76)
    at hudson.security.HudsonFilter.doFilter(HudsonFilter.java:164)
    at winstone.FilterConfiguration.execute(FilterConfiguration.java:194)
    at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:366)
    at org.kohsuke.stapler.compression.CompressionFilter.doFilter(CompressionFilter.java:50)
    at winstone.FilterConfiguration.execute(FilterConfiguration.java:194)
    at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:366)
    at hudson.util.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:81)
    at winstone.FilterConfiguration.execute(FilterConfiguration.java:194)
    at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:366)
    at winstone.RequestDispatcher.forward(RequestDispatcher.java:331)
    at winstone.RequestHandlerThread.processRequest(RequestHandlerThread.java:215)
    at winstone.RequestHandlerThread.run(RequestHandlerThread.java:138)
    at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
    at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
    at java.util.concurrent.FutureTask.run(Unknown Source)
    at winstone.BoundedExecutorService$1.run(BoundedExecutorService.java:77)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.reflect.InvocationTargetException
    at sun.reflect.GeneratedMethodAccessor97.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.kohsuke.stapler.export.MethodProperty.getValue(MethodProperty.java:66)
    at org.kohsuke.stapler.export.Property.writeTo(Property.java:113)
    ... 84 more
Caused by: java.lang.OutOfMemoryError: Java heap space
    at java.nio.HeapByteBuffer.<init>(Unknown Source)
    at java.nio.ByteBuffer.allocate(Unknown Source)
    at sun.nio.cs.StreamEncoder.<init>(Unknown Source)
    at sun.nio.cs.StreamEncoder.<init>(Unknown Source)
    at sun.nio.cs.StreamEncoder.forOutputStreamWriter(Unknown Source)
    at java.io.OutputStreamWriter.<init>(Unknown Source)
    at hudson.Util.encode(Util.java:677)
    at hudson.model.AbstractItem.getAbsoluteUrl(AbstractItem.java:421)
    at hudson.model.Run.getAbsoluteUrl(Run.java:841)
    at sun.reflect.GeneratedMethodAccessor97.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.kohsuke.stapler.export.MethodProperty.getValue(MethodProperty.java:66)
    at org.kohsuke.stapler.export.Property.writeTo(Property.java:113)
    at org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:179)
    at org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:176)
    at org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:176)
    at org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:176)
    at org.kohsuke.stapler.export.Property.writeValue(Property.java:231)
    at org.kohsuke.stapler.export.Property.writeValue(Property.java:181)
    at org.kohsuke.stapler.export.Property.writeValue(Property.java:136)
    at org.kohsuke.stapler.export.Property.writeTo(Property.java:113)
    at org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:179)
    at org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:176)
    at org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:176)
    at org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:176)
    at org.kohsuke.stapler.export.Model.writeTo(Model.java:152)
    at org.kohsuke.stapler.ResponseImpl.serveExposedBean(ResponseImpl.java:200)
    at hudson.model.Api.doXml(Api.java:87)
    at sun.reflect.GeneratedMethodAccessor106.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)

[Harpreet singh Wadhwa]

Looks like Memory issue "OutOfMemoryError: Java heap space"

Try increasing in JAVA_OPTS 

Thanks

--

http://wharpreet.blogspot.com

http://linuxgazettes.blogspot.com
http://in.linkedin.com/in/wharpreet

[MDKF]

Thanks for your reply Harpreet.
The out of memory issue was caused by something failing. In this case increasing the heap space would not fix the issue.

[MDKF]

Can anyone help with this issue?

[Scott Evans]

What do you have for your java memory settings?  Primarily -Xmx would define the max amount of memory your main java process can allocate.

Scott

[AdvanTiSS]

-Xmx default walue for windows service installer is 256mb and we had same problem until heap max size was increased to 4gb

[Scott Evans]

If you're running a 32-bit java, I believe the max one can allocate is around 1500 meg or so, though a 64-bit java will allow significantly more.

[Michael Fowler]

I don't want to allocate more memory to Jenkins. I want to know what crashed that then caused Jenkins to run out of memory. For example the last time I got an out of memory exception it was caused by a misconfiguration of the ThinBackup Plugin. No matter how much memory Jenkins had, ThinBackup crashing would have used it all.

[Dean Yu]

This looks like someone was using the remote API to retrieve an XML representation of a Jenkins object. This line was the clue:

    at hudson.model.Api.doXml(Api.java:87)

The way the remote API works, it generates the entire XML document in memory before sending it as a response. Depending on what was being requested, this could be HUGE. If this doesn't sound like something you did, you should take a look at your access logs and see if there were any requests with /api/xml at the end of the URL around the time of the crash.

  -- Dean

[Michael Fowler]

Hi Dean,
 Thanks for the reply. I can't figure out what requested that XML. I have no external applications that would access that and no one was logged into the system at that time. I checked the size of the XML document its only 1kb. Anything else I can check?

[Dean Yu]

Which XML were you checking? The XML returned by Api.doXml() is not something that's kept on disk. Here's the remote API I was actually referring to:

https://wiki.jenkins-ci.org/display/JENKINS/Remote+access+API

The web access log is the only way I can think of that would tell you what was requested.

[Michael Fowler]

I looked at the xml file generated from: http://nwd2hscjnks/job/VectorGenerator/api/xml . Is that not the file you meant?

[Dean Yu]

Hi Michael,

  Ah, sorry, I missed that URL in the stack trace in my earlier responses. Yes, that would have been the file I meant. If that file is as small as you say, then it could be that that document is the symptom and not the cause of your out of memory. What I would do next is attach a profiler and see what's eating up all your memory.