Actually, the spiking has returned.

On Monday, May 20, 2013 9:07:49 AM UTC-4, Steven Deal wrote:
>
> Jstack was not that helpful for me, I'm simply not that familiar with 
> using the tool. Looking at the thread for the 'configure' request I see 
> (here's a stack snippet)
>    java.lang.Thread.State: RUNNABLE
>         at java.lang.Throwable.fillInStackTrace(Native Method)
>         at java.lang.Throwable.fillInStackTrace(Throwable.java:782)
>         - locked <0x00000006b6be4768> (a 
> java.lang.reflect.InvocationTargetException)
>         at java.lang.Throwable.<init>(Throwable.java:310)
>         at java.lang.Exception.<init>(Exception.java:102)
>         at 
> java.lang.ReflectiveOperationException.<init>(ReflectiveOperationException.java:89)
>         at 
> java.lang.reflect.InvocationTargetException.<init>(InvocationTargetException.java:72)
>         at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
>         at 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>         at java.lang.reflect.Method.invoke(Method.java:601)
>         at 
> jenkins.ClassLoaderReflectionToolkit.findClass(ClassLoaderReflectionToolkit.java:44)
>         at 
> hudson.PluginManager$UberClassLoader.findClass(PluginManager.java:951)
>         at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
>         - locked <0x0000000413248790> (a 
> hudson.PluginManager$UberClassLoader)
>         at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
>         at net.java.sezpoz.IndexItem.element(IndexItem.java:134)
>         at net.java.sezpoz.IndexItem.instance(IndexItem.java:178)
>         at 
> hudson.plugins.emailext.plugins.ContentBuilder.getPrivateMacros(ContentBuilder.java:79)
>         at 
> hudson.plugins.emailext.plugins.content.ScriptContent$MethodMissingHandler.methodMissing(ScriptContent.java:168)
>
> But in the logs, I noticed the following:
> WARNING: Failed to resolve class
> com.thoughtworks.xstream.mapper.CannotResolveClassException: 
> org.jenkinsci.plugins.envinject.EnvInjectPluginAction
> at 
> com.thoughtworks.xstream.mapper.DefaultMapper.realClass(DefaultMapper.java:56)
> So, I removed the use of the EnvInject plugin, uninstalled it and so 
> far... the spiking has disappeared. Course... the real test will be after 
> many hours of uptime.
>
> On Wednesday, May 15, 2013 1:48:05 PM UTC-4, Jesse Glick wrote:
>>
>> On 05/15/2013 01:13 PM, Steven Deal wrote: 
>> > Does anyone know what might affect rendering this page? 
>>
>> You need to take a thread dump to diagnose. $server/threadDump, jstack, 
>> kill -QUIT, etc. 
>>
>

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