I can't not upgrade to >2.116 because jetty response time is unacceptable. I got this:

      WARNING: Caught exception evaluating: h.filterDescriptors(it,attrs.descriptors) in /configure. Reason: java.lang.NullPointerException: Descriptor list is null for context 'class hudson.model.Hudson' in thread 'Handling GET /configure from 10.20.0.5 : RequestHandlerThread21 Jenkins/configure.jelly GlobalLibraries/config.jelly LibraryConfiguration/config.jelly SCMRetriever/DescriptorImpl/config.jelly MultiSCM/DescriptorImpl/config.jelly'
      java.lang.NullPointerException: Descriptor list is null for context 'class hudson.model.Hudson' in thread 'Handling GET /configure from 10.20.0.5 : RequestHandlerThread21 Jenkins/configure.jelly GlobalLibraries/config.jelly LibraryConfiguration/config.jelly SCMRetriever/DescriptorImpl/config.jelly MultiSCM/DescriptorImpl/config.jelly'
      at hudson.model.DescriptorVisibilityFilter.apply(DescriptorVisibilityFilter.java:73)
      at hudson.Functions.filterDescriptors(Functions.java:1888)
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      at java.lang.reflect.Method.invoke(Method.java:498)
      at org.apache.commons.jexl.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:258)
      at org.apache.commons.jexl.parser.ASTMethod.execute(ASTMethod.java:104)
      at org.apache.commons.jexl.parser.ASTReference.execute(ASTReference.java:83)
      at org.apache.commons.jexl.parser.ASTReference.value(ASTReference.java:57)
      at org.apache.commons.jexl.parser.ASTReferenceExpression.value(ASTReferenceExpression.java:51)
      at org.apache.commons.jexl.ExpressionImpl.evaluate(ExpressionImpl.java:80)
      at hudson.ExpressionFactory2$JexlExpression.evaluate(ExpressionFactory2.java:74)
      at org.apache.commons.jelly.tags.core.CoreTagLibrary$3.run(CoreTagLibrary.java:134)
      at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
      at org.kohsuke.stapler.jelly.ReallyStaticTagLibrary$1.run(ReallyStaticTagLibrary.java:99)
      at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
      at org.kohsuke.stapler.jelly.ReallyStaticTagLibrary$1.run(ReallyStaticTagLibrary.java:99)
      at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
      at org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)
      at org.kohsuke.stapler.jelly.CallTagLibScript.run(CallTagLibScript.java:120)
      at org.kohsuke.stapler.jelly.CallTagLibScript$1.run(CallTagLibScript.java:99)
      at org.apache.commons.jelly.tags.define.InvokeBodyTag.doTag(InvokeBodyTag.java:91)
      at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)
      at org.kohsuke.stapler.jelly.ReallyStaticTagLibrary$1.run(ReallyStaticTagLibrary.java:99)
      at org.kohsuke.stapler.jelly.ReallyStaticTagLibrary$1.run(ReallyStaticTagLibrary.java:99)
      at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
      at org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)
      at org.kohsuke.stapler.jelly.CallTagLibScript.run(CallTagLibScript.java:120)
      at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
      at org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)
      at org.kohsuke.stapler.jelly.JellyViewScript.run(JellyViewScript.java:95)
      at org.kohsuke.stapler.jelly.IncludeTag.doTag(IncludeTag.java:147)
      at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)
      at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
      at org.kohsuke.stapler.jelly.CallTagLibScript$1.run(CallTagLibScript.java:99)
      at org.apache.commons.jelly.tags.define.InvokeBodyTag.doTag(InvokeBodyTag.java:91)
      at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)
      at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
      at org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)
      at org.kohsuke.stapler.jelly.CallTagLibScript.run(CallTagLibScript.java:120)
      at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:161)
      at org.apache.commons.jelly.tags.core.ForEachTag.doTag(ForEachTag.java:150)
      at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)
      at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
      at org.kohsuke.stapler.jelly.CallTagLibScript$1.run(CallTagLibScript.java:99)
      at org.apache.commons.jelly.tags.define.InvokeBodyTag.doTag(InvokeBodyTag.java:91)
      at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)
      at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
      at org.kohsuke.stapler.jelly.CallTagLibScript$1.run(CallTagLibScript.java:99)
      at org.apache.commons.jelly.tags.define.InvokeBodyTag.doTag(InvokeBodyTag.java:91)
      at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)
      at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:161)
      at org.apache.commons.jelly.tags.core.WhenTag.doTag(WhenTag.java:46)
      at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)
      at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
      at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:161)
      at org.apache.commons.jelly.tags.core.ChooseTag.doTag(ChooseTag.java:38)
      at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)
      at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
      at org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)
      at org.kohsuke.stapler.jelly.CallTagLibScript.run(CallTagLibScript.java:120)
      at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
      at org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)
      at org.kohsuke.stapler.jelly.CallTagLibScript.run(CallTagLibScript.java:120)
      at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
      at org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)
      at org.kohsuke.stapler.jelly.CallTagLibScript.run(CallTagLibScript.java:120)
      at org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)
      at org.kohsuke.stapler.jelly.JellyViewScript.run(JellyViewScript.java:95)
      at org.kohsuke.stapler.jelly.IncludeTag.doTag(IncludeTag.java:147)
      at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)
      at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
      at org.kohsuke.stapler.jelly.CallTagLibScript$1.run(CallTagLibScript.java:99)
      at org.apache.commons.jelly.tags.define.InvokeBodyTag.doTag(InvokeBodyTag.java:91)
      at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)
      at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
      at org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)
      at org.kohsuke.stapler.jelly.CallTagLibScript.run(CallTagLibScript.java:120)
      at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:161)
      at org.apache.commons.jelly.tags.core.ForEachTag.doTag(ForEachTag.java:150)
      at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)
      at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
      at org.kohsuke.stapler.jelly.CallTagLibScript$1.run(CallTagLibScript.java:99)
      at org.apache.commons.jelly.tags.define.InvokeBodyTag.doTag(InvokeBodyTag.java:91)
      at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)
      at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
      at org.kohsuke.stapler.jelly.CallTagLibScript$1.run(CallTagLibScript.java:99)
      at org.apache.commons.jelly.tags.define.InvokeBodyTag.doTag(InvokeBodyTag.java:91)
      at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)
      at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:161)
      at org.apache.commons.jelly.tags.core.WhenTag.doTag(WhenTag.java:46)
      at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)
      at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
      at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:161)
      at org.apache.commons.jelly.tags.core.ChooseTag.doTag(ChooseTag.java:38)
      at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)
      at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
      at org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)
      at org.kohsuke.stapler.jelly.CallTagLibScript.run(CallTagLibScript.java:120)
      at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
      at org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)
      at org.kohsuke.stapler.jelly.CallTagLibScript.run(CallTagLibScript.java:120)
      at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
      at org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)
      at org.kohsuke.stapler.jelly.CallTagLibScript.run(CallTagLibScript.java:120)
      at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
      at org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)
      at org.kohsuke.stapler.jelly.JellyViewScript.run(JellyViewScript.java:95)
      at org.kohsuke.stapler.jelly.IncludeTag.doTag(IncludeTag.java:147)
      at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)
      at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
      at org.kohsuke.stapler.jelly.ReallyStaticTagLibrary$1.run(ReallyStaticTagLibrary.java:99)
      at org.kohsuke.stapler.jelly.CallTagLibScript$1.run(CallTagLibScript.java:99)
      at org.apache.commons.jelly.tags.define.InvokeBodyTag.doTag(InvokeBodyTag.java:91)
      at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)
      at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
      at org.apache.commons.jelly.tags.core.ScopeTag.doTag(ScopeTag.java:37)
      at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)
      at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
      at org.kohsuke.stapler.jelly.ReallyStaticTagLibrary$1.run(ReallyStaticTagLibrary.java:99)
      at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
      at org.kohsuke.stapler.jelly.ReallyStaticTagLibrary$1.run(ReallyStaticTagLibrary.java:99)
      at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
      at org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)
      at org.kohsuke.stapler.jelly.CallTagLibScript.run(CallTagLibScript.java:120)
      at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
      at org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)
      at org.kohsuke.stapler.jelly.CallTagLibScript.run(CallTagLibScript.java:120)
      at org.kohsuke.stapler.jelly.CallTagLibScript$1.run(CallTagLibScript.java:99)
      at org.apache.commons.jelly.tags.define.InvokeBodyTag.doTag(InvokeBodyTag.java:91)
      at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)
      at org.kohsuke.stapler.jelly.ReallyStaticTagLibrary$1.run(ReallyStaticTagLibrary.java:99)
      at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
      at org.kohsuke.stapler.jelly.ReallyStaticTagLibrary$1.run(ReallyStaticTagLibrary.java:99)
      at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
      at org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)
      at org.kohsuke.stapler.jelly.CallTagLibScript.run(CallTagLibScript.java:120)
      at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
      at org.kohsuke.stapler.jelly.CallTagLibScript$1.run(CallTagLibScript.java:99)
      at org.apache.commons.jelly.tags.define.InvokeBodyTag.doTag(InvokeBodyTag.java:91)
      at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)
      at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
      at org.kohsuke.stapler.jelly.CallTagLibScript$1.run(CallTagLibScript.java:99)
      at org.apache.commons.jelly.tags.define.InvokeBodyTag.doTag(InvokeBodyTag.java:91)
      at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)
      at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:161)
      at org.apache.commons.jelly.tags.core.WhenTag.doTag(WhenTag.java:46)
      at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)
      at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
      at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:161)
      at org.apache.commons.jelly.tags.core.ChooseTag.doTag(ChooseTag.java:38)
      at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)
      at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
      at org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)
      at org.kohsuke.stapler.jelly.CallTagLibScript.run(CallTagLibScript.java:120)
      at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
      at org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)
      at org.kohsuke.stapler.jelly.CallTagLibScript.run(CallTagLibScript.java:120)
      at org.apache.commons.jelly.tags.core.CoreTagLibrary$1.run(CoreTagLibrary.java:98)
      at org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)
      at org.kohsuke.stapler.jelly.JellyViewScript.run(JellyViewScript.java:95)
      at org.kohsuke.stapler.jelly.IncludeTag.doTag(IncludeTag.java:147)
      at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)
      at org.kohsuke.stapler.jelly.CallTagLibScript$1.run(CallTagLibScript.java:99)
      at org.apache.commons.jelly.tags.define.InvokeBodyTag.doTag(InvokeBodyTag.java:91)
      at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)
      at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
      at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:161)
      at org.apache.commons.jelly.tags.core.OtherwiseTag.doTag(OtherwiseTag.java:41)
      at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)
      at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
      at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:161)
      at org.apache.commons.jelly.tags.core.ChooseTag.doTag(ChooseTag.java:38)
      at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)
      at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
      at org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)
      at org.kohsuke.stapler.jelly.CallTagLibScript.run(CallTagLibScript.java:120)
      at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
      at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:161)
      at org.apache.commons.jelly.tags.core.ForEachTag.doTag(ForEachTag.java:150)
      at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)
      at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
      at org.kohsuke.stapler.jelly.CallTagLibScript$1.run(CallTagLibScript.java:99)
      at org.apache.commons.jelly.tags.define.InvokeBodyTag.doTag(InvokeBodyTag.java:91)
      at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)
      at org.kohsuke.stapler.jelly.ReallyStaticTagLibrary$1.run(ReallyStaticTagLibrary.java:99)
      at org.kohsuke.stapler.jelly.ReallyStaticTagLibrary$1.run(ReallyStaticTagLibrary.java:99)
      at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
      at org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)
      at org.kohsuke.stapler.jelly.CallTagLibScript.run(CallTagLibScript.java:120)
      at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
      at org.kohsuke.stapler.jelly.CallTagLibScript$1.run(CallTagLibScript.java:99)
      at org.apache.commons.jelly.tags.define.InvokeBodyTag.doTag(InvokeBodyTag.java:91)
      at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)
      at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
      at org.apache.commons.jelly.tags.core.CoreTagLibrary$1.run(CoreTagLibrary.java:98)
      at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
      at org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)
      at org.kohsuke.stapler.jelly.CallTagLibScript.run(CallTagLibScript.java:120)
      at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
      at org.kohsuke.stapler.jelly.CallTagLibScript$1.run(CallTagLibScript.java:99)
      at org.apache.commons.jelly.tags.define.InvokeBodyTag.doTag(InvokeBodyTag.java:91)
      at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)
      at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
      at org.kohsuke.stapler.jelly.ReallyStaticTagLibrary$1.run(ReallyStaticTagLibrary.java:99)
      at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
      at org.kohsuke.stapler.jelly.ReallyStaticTagLibrary$1.run(ReallyStaticTagLibrary.java:99)
      at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
      at org.kohsuke.stapler.jelly.ReallyStaticTagLibrary$1.run(ReallyStaticTagLibrary.java:99)
      at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
      at org.kohsuke.stapler.jelly.ReallyStaticTagLibrary$1.run(ReallyStaticTagLibrary.java:99)
      at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
      at org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)
      at org.kohsuke.stapler.jelly.CallTagLibScript.run(CallTagLibScript.java:120)
      at org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)
      at org.kohsuke.stapler.jelly.JellyViewScript.run(JellyViewScript.java:95)
      at org.kohsuke.stapler.jelly.DefaultScriptInvoker.invokeScript(DefaultScriptInvoker.java:63)
      at org.kohsuke.stapler.jelly.DefaultScriptInvoker.invokeScript(DefaultScriptInvoker.java:53)
      at org.kohsuke.stapler.jelly.JellyFacet$1.dispatch(JellyFacet.java:97)
      at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:734)
      at org.kohsuke.stapler.Stapler.invoke(Stapler.java:864)
      at org.kohsuke.stapler.Stapler.invoke(Stapler.java:668)
      at org.kohsuke.stapler.Stapler.service(Stapler.java:238)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
      at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:865)
      at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1655)
      at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:154)
      at net.bull.javamelody.MonitoringFilter.doFilter(MonitoringFilter.java:237)
      at net.bull.javamelody.MonitoringFilter.doFilter(MonitoringFilter.java:214)
      at net.bull.javamelody.PluginMonitoringFilter.doFilter(PluginMonitoringFilter.java:88)
      at org.jvnet.hudson.plugins.monitoring.HudsonMonitoringFilter.doFilter(HudsonMonitoringFilter.java:114)
      at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:151)
      at hudson.plugins.greenballs.GreenBallFilter.doFilter(GreenBallFilter.java:59)
      at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:151)
      at hudson.util.PluginServletFilter.doFilter(PluginServletFilter.java:157)
      at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1642)
      at hudson.security.csrf.CrumbFilter.doFilter(CrumbFilter.java:105)
      at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1642)
      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 jenkins.security.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:117)
      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 jenkins.security.BasicHeaderProcessor.doFilter(BasicHeaderProcessor.java:93)
      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:67)
      at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
      at hudson.security.ChainedServletFilter.doFilter(ChainedServletFilter.java:90)
      at hudson.security.HudsonFilter.doFilter(HudsonFilter.java:171)
      at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1642)
      at org.kohsuke.stapler.compression.CompressionFilter.doFilter(CompressionFilter.java:49)
      at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1642)
      at hudson.util.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:82)
      at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1642)
      at org.kohsuke.stapler.DiagnosticThreadNameFilter.doFilter(DiagnosticThreadNameFilter.java:30)
      at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1642)
      at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:533)
      at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:146)
      at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:524)
      at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
      at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:257)
      at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1595)
      at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:255)
      at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1317)
      at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:203)
      at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:473)
      at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1564)
      at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:201)
      at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1219)
      at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:144)
      at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
      at org.eclipse.jetty.server.Server.handle(Server.java:531)
      at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:352)
      at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:260)
      at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:281)
      at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:102)
      at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:118)
      at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:333)
      at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:310)
      at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:168)
      at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:126)
      at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:366)
      at winstone.BoundedExecutorService.lambda$scheduleNext$0(BoundedExecutorService.java:80)
      at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
      at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
      at java.lang.Thread.run(Thread.java:748)

          [JENKINS-52654] slowness after 2.116+

          I probably used the wrong words. I wanted to say, I can not use newer version but 2.116.

          2.116 is the last version which work with normal speed. 

          The issue (h.filterDescriptors(it,attrs.descriptors) in /configure. Reason: java.lang.NullPointerException) could come a plugin. I'll do more checks.

          Balint Szigeti added a comment - I probably used the wrong words. I wanted to say, I can not use newer version but 2.116. 2.116 is the last version which work with normal speed.  The issue (h.filterDescriptors(it,attrs.descriptors) in /configure. Reason: java.lang.NullPointerException) could come a plugin. I'll do more checks.

          Oleg Nenashev added a comment -

          "Update Winstone from 4.1.2 to 4.2 to update Jetty from 9.4.5 to 9.4.8 for various bugfixes and improvements" is in 2.117.

          From "Jenkins/configure.jelly GlobalLibraries/config.jelly LibraryConfiguration/config.jelly SCMRetriever/DescriptorImpl/config.jelly MultiSCM/DescriptorImpl/config.jelly" I suspect MultipleSCM to be a root cause

          Code track:

          Descriptor list is null for context.

           

          If the MultipleSCM plugin is used correctly, there should be no such issue. Most likely hetero-list-scm is incorrectly invoked somewhere with null attribute

           

          Oleg Nenashev added a comment - "Update Winstone from 4.1.2 to 4.2 to update Jetty from 9.4.5 to 9.4.8 for various bugfixes and improvements" is in 2.117. From "Jenkins/configure.jelly GlobalLibraries/config.jelly LibraryConfiguration/config.jelly SCMRetriever/DescriptorImpl/config.jelly MultiSCM/DescriptorImpl/config.jelly" I suspect MultipleSCM to be a root cause Code track: https://github.com/jenkinsci/jenkins/blob/d4737b2b60438ce0e3cb7a8a6f26675f7c880914/core/src/main/java/hudson/model/DescriptorVisibilityFilter.java#L71-L74   - the entire iterable array is null https://github.com/jenkinsci/multiple-scms-plugin/blob/6e7231283defa716d547b2f4f56e9b8db52b67be/src/main/resources/org/jenkinsci/plugins/multiplescms/forms/hetero-list-scm.jelly#L126 https://github.com/jenkinsci/multiple-scms-plugin/blob/6e7231283defa716d547b2f4f56e9b8db52b67be/src/main/resources/org/jenkinsci/plugins/multiplescms/MultiSCM/config.jelly#L9-L13 https://github.com/jenkinsci/multiple-scms-plugin/blob/6e7231283defa716d547b2f4f56e9b8db52b67be/src/main/java/org/jenkinsci/plugins/multiplescms/MultiSCM.java#L220_L229 - instanceof checks will permit null descriptor, but it will never return null collection https://github.com/jenkinsci/jenkins/blame/master/core/src/main/java/hudson/scm/SCM.java#L740-L751 - cannot return collection null descriptor independently of whether the Project is passed or not. The original context refers "Hudson" so likely project is not passed Descriptor list is null for context.   If the MultipleSCM plugin is used correctly, there should be no such issue. Most likely hetero-list-scm is incorrectly invoked somewhere with null attribute  

          okay, the NullPointerException belonged to MultiSCM plugin, that I removed, but the slowness still remained. I started to disabled plugins, but the jetty (web page rendering time) still slow. I've tried the 2.133 and 2.121.2 LTS but both are slow. I can't see any relevant in logs (Ubuntu /var/log/jenkins/jenkins.log).  

          Balint Szigeti added a comment - okay, the NullPointerException belonged to MultiSCM plugin, that I removed, but the slowness still remained. I started to disabled plugins, but the jetty (web page rendering time) still slow. I've tried the 2.133 and 2.121.2 LTS but both are slow. I can't see any relevant in logs (Ubuntu /var/log/jenkins/jenkins.log).  

          isn't there a way to get more info from jenkins what it is doing? why does page rendering take ages?

          Balint Szigeti added a comment - isn't there a way to get more info from jenkins what it is doing? why does page rendering take ages?

          Oleg Nenashev added a comment -

          An ultimate approach would be to attach a Java profiler to your instance, but it is preferable to avoid it on production.

          If you have a test instance where you can reproduce it, it would be great if you could do it

          Oleg Nenashev added a comment - An ultimate approach would be to attach a Java profiler to your instance, but it is preferable to avoid it on production. If you have a test instance where you can reproduce it, it would be great if you could do it

          okay, the answer is https://plugins.jenkins.io/extended-choice-parameter
          this plugin cause the slowness, but I don't know why.

          Balint Szigeti added a comment - okay, the answer is https://plugins.jenkins.io/extended-choice-parameter this plugin cause the slowness, but I don't know why.

          I've collected this.

          hotspot.log

          Does it say anything to you?

          Balint Szigeti added a comment - I've collected this. hotspot.log Does it say anything to you?

          I disabled the plugin but I still have the slowness

          Balint Szigeti added a comment - I disabled the plugin but I still have the slowness

          Balint Szigeti added a comment - - edited

          I tried gathering some profiling information using jvisualvm. Please let me know if you would prefer a different format. I started up the jenkins waited for some time to get it up so that login screen appeared. That was the time I started CPU sampling. After login 36 secs was needed to load the main page (snapshot-1532610641845.nps) but browser still indicated that the page was not fully loaded. After about 1,5 minutes I requested the Manage Jenkins page. It didn't load for another 1,5 mins. This was the time I created the snapshot-1532610784788.nps as well as the Screen Shot 2018-07-26 at 15.13.22.png. (It eventually loaded the Manage Jenkins page after 20 minutes) 

          Balint Szigeti added a comment - - edited I tried gathering some profiling information using jvisualvm. Please let me know if you would prefer a different format. I started up the jenkins waited for some time to get it up so that login screen appeared. That was the time I started CPU sampling. After login 36 secs was needed to load the main page ( snapshot-1532610641845.nps ) but browser still indicated that the page was not fully loaded. After about 1,5 minutes I requested the Manage Jenkins page. It didn't load for another 1,5 mins. This was the time I created the snapshot-1532610784788.nps as well as the Screen Shot 2018-07-26 at 15.13.22.png . (It eventually loaded the Manage Jenkins page after 20 minutes) 

          • plugin list:
            ace-editor
            analysis-collector
            analysis-core
            ansicolor
            antisamy-markup-formatter
            ant
            apache-httpcomponents-client-4-api
            badge
            bouncycastle-api
            branch-api
            build-cause-run-condition
            build-failure-analyzer
            build-name-setter
            build-user-vars-plugin
            checkstyle
            cloudbees-folder
            command-launcher
            conditional-buildstep
            config-file-provider
            credentials-binding
            credentials
            crowd2
            display-url-api
            durable-task
            email-ext
            envinject-api
            envinject
            extended-choice-parameter
            extensible-choice-parameter
            external-monitor-job
            findbugs
            flaky-test-handler
            git-client
            git
            gradle
            groovy-postbuild
            icon-shim
            jackson2-api
            javadoc
            jdk-tool
            jira
            jobConfigHistory
            jquery-detached
            jquery
            jsch
            junit
            ldap
            mailer
            mapdb-api
            matrix-auth
            matrix-project
            maven-plugin
            monitoring
            pam-auth
            parameterized-trigger
            pegdown-formatter
            plain-credentials
            postbuild-task
            rebuild
            resource-disposer
            run-condition-extras
            run-condition
            scm-api
            script-security
            ssh-credentials
            stashNotifier
            stash-pullrequest-builder
            structs
            subversion
            timestamper
            token-macro
            violations
            windows-slaves
            workflow-api
            workflow-durable-task-step
            workflow-job
            workflow-scm-step
            workflow-step-api
            workflow-support
            ws-cleanup
            xvfb

          Balint Szigeti added a comment - plugin list: ace-editor analysis-collector analysis-core ansicolor antisamy-markup-formatter ant apache-httpcomponents-client-4-api badge bouncycastle-api branch-api build-cause-run-condition build-failure-analyzer build-name-setter build-user-vars-plugin checkstyle cloudbees-folder command-launcher conditional-buildstep config-file-provider credentials-binding credentials crowd2 display-url-api durable-task email-ext envinject-api envinject extended-choice-parameter extensible-choice-parameter external-monitor-job findbugs flaky-test-handler git-client git gradle groovy-postbuild icon-shim jackson2-api javadoc jdk-tool jira jobConfigHistory jquery-detached jquery jsch junit ldap mailer mapdb-api matrix-auth matrix-project maven-plugin monitoring pam-auth parameterized-trigger pegdown-formatter plain-credentials postbuild-task rebuild resource-disposer run-condition-extras run-condition scm-api script-security ssh-credentials stashNotifier stash-pullrequest-builder structs subversion timestamper token-macro violations windows-slaves workflow-api workflow-durable-task-step workflow-job workflow-scm-step workflow-step-api workflow-support ws-cleanup xvfb

            Unassigned Unassigned
            jupiter2005ster Balint Szigeti
            Votes:
            1 Vote for this issue
            Watchers:
            6 Start watching this issue

              Created:
              Updated: