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Improvement
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Resolution: Unresolved
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Major
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None
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Jenkins ver. 1.651.3
Delivery Pipeline Plugin 0.9.7
Also affects: 1.0.7
LDAP Plugin: 1.11
Reference JENKINS-30209
When the Jenkins instance is configured for LDAP for auth & with huge delivery pipelines, this call creates lot of traffic towards the LDAP; The number of calls is directly affected by "Update interval" and "Number of pipeline instances per pipeline
Since the users "Full name" is already cached at $JENKINS_HOME/users, would be possible to load them at startup and prevent it from resolving each time?
On several occasions, we see that thread gets blocked and won't get released soon, causing slow of Jenkins access. Additionally, this is creating lot of traffic towards corporate LDAP. Even though we have load balance for LDAP 
stacktrace:
Connecting to ldap:/// : Handling GET /jenkins/view/delivery-pipeline-view/api/json from : http-bio-8443-exec-64960 - priority:5 - threadId:0x00007fefc68ff000 - nativeId:0x9fa - state:RUNNABLE java.lang.Thread.State: RUNNABLE at java.net.SocketInputStream.socketRead0(Native Method) at java.net.SocketInputStream.socketRead(SocketInputStream.java:116) at java.net.SocketInputStream.read(SocketInputStream.java:170) at java.net.SocketInputStream.read(SocketInputStream.java:141) at sun.security.ssl.InputRecord.readFully(InputRecord.java:465) at sun.security.ssl.InputRecord.read(InputRecord.java:503) at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:961) - locked <0x00000004fc7b0a20> (a java.lang.Object) at sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1363) - locked <0x00000004fc7b0b48> (a java.lang.Object) at sun.security.ssl.SSLSocketImpl.writeRecord(SSLSocketImpl.java:735) at sun.security.ssl.AppOutputStream.write(AppOutputStream.java:123) - locked <0x00000004fc7b2b68> (a sun.security.ssl.AppOutputStream) at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82) at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140) - locked <0x00000004fc7b2b80> (a java.io.BufferedOutputStream) at com.sun.jndi.ldap.Connection.writeRequest(Connection.java:426) - locked <0x00000004fc7ac1a8> (a com.sun.jndi.ldap.Connection) at com.sun.jndi.ldap.Connection.writeRequest(Connection.java:399) at com.sun.jndi.ldap.LdapClient.extendedOp(LdapClient.java:1205) at com.sun.jndi.ldap.LdapCtx.extendedOperation(LdapCtx.java:3255) at hudson.plugins.active_directory.ActiveDirectorySecurityRealm$DescriptorImpl.bind(ActiveDirectorySecurityRealm.java:623) at hudson.plugins.active_directory.ActiveDirectorySecurityRealm$DescriptorImpl.bind(ActiveDirectorySecurityRealm.java:556) at hudson.plugins.active_directory.ActiveDirectoryUnixAuthenticationProvider$1.call(ActiveDirectoryUnixAuthenticationProvider.java:288) at hudson.plugins.active_directory.ActiveDirectoryUnixAuthenticationProvider$1.call(ActiveDirectoryUnixAuthenticationProvider.java:271) at com.google.common.cache.LocalCache$LocalManualCache$1.load(LocalCache.java:4767) at com.google.common.cache.LocalCache$LoadingValueReference.loadFuture(LocalCache.java:3568) at com.google.common.cache.LocalCache$Segment.loadSync(LocalCache.java:2350) at com.google.common.cache.LocalCache$Segment.lockedGetOrLoad(LocalCache.java:2313) - locked <0x00000004fc7a0818> (a com.google.common.cache.LocalCache$StrongAccessEntry) at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2228) at com.google.common.cache.LocalCache.get(LocalCache.java:3965) at com.google.common.cache.LocalCache$LocalManualCache.get(LocalCache.java:4764) at hudson.plugins.active_directory.ActiveDirectoryUnixAuthenticationProvider.retrieveUser(ActiveDirectoryUnixAuthenticationProvider.java:271) at hudson.plugins.active_directory.ActiveDirectoryUnixAuthenticationProvider.retrieveUser(ActiveDirectoryUnixAuthenticationProvider.java:236) at hudson.plugins.active_directory.ActiveDirectoryUnixAuthenticationProvider.retrieveUser(ActiveDirectoryUnixAuthenticationProvider.java:178) at hudson.plugins.active_directory.AbstractActiveDirectoryAuthenticationProvider.loadUserByUsername(AbstractActiveDirectoryAuthenticationProvider.java:54) at hudson.plugins.active_directory.ActiveDirectorySecurityRealm.loadUserByUsername(ActiveDirectorySecurityRealm.java:795) at hudson.model.User$UserIDCanonicalIdResolver.resolveCanonicalId(User.java:1049) at hudson.model.User.get(User.java:395) at hudson.model.User.get(User.java:364) at jenkins.model.Jenkins.getUser(Jenkins.java:2535) at se.diabol.jenkins.pipeline.resolver.CoreCauseResolver.getDisplayName(CoreCauseResolver.java:67) at se.diabol.jenkins.pipeline.resolver.CoreCauseResolver.resolveCause(CoreCauseResolver.java:37) at se.diabol.jenkins.pipeline.CauseResolver.getTrigger(CauseResolver.java:52) at se.diabol.jenkins.pipeline.domain.TriggerCause.getTriggeredBy(TriggerCause.java:75) at se.diabol.jenkins.pipeline.domain.Pipeline.createPipelineLatest(Pipeline.java:292) at se.diabol.jenkins.pipeline.DeliveryPipelineView.getComponent(DeliveryPipelineView.java:522) at se.diabol.jenkins.pipeline.DeliveryPipelineView.getPipelines(DeliveryPipelineView.java:476) at sun.reflect.GeneratedMethodAccessor199.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:497) at org.kohsuke.stapler.export.MethodProperty.getValue(MethodProperty.java:66) at org.kohsuke.stapler.export.Property.writeTo(Property.java:116) at org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:200) at org.kohsuke.stapler.export.Model.writeTo(Model.java:166) at org.kohsuke.stapler.ResponseImpl.writeOne(ResponseImpl.java:285) at org.kohsuke.stapler.ResponseImpl.serveExposedBean(ResponseImpl.java:276) at hudson.model.Api.doJson(Api.java:211) at sun.reflect.GeneratedMethodAccessor185.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:497) at org.kohsuke.stapler.Function$InstanceFunction.invoke(Function.java:320) at org.kohsuke.stapler.Function.bindAndInvoke(Function.java:163) at org.kohsuke.stapler.Function.bindAndInvokeAndServeResponse(Function.java:96) at org.kohsuke.stapler.MetaClass$1.doDispatch(MetaClass.java:124) at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:58) at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:746) at org.kohsuke.stapler.Stapler.invoke(Stapler.java:876) at org.kohsuke.stapler.MetaClass$3.doDispatch(MetaClass.java:196) at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:58) at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:746) at org.kohsuke.stapler.Stapler.invoke(Stapler.java:876) at org.kohsuke.stapler.MetaClass$5.doDispatch(MetaClass.java:233) at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:58) at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:746) at org.kohsuke.stapler.Stapler.invoke(Stapler.java:876) at org.kohsuke.stapler.Stapler.invoke(Stapler.java:649) at org.kohsuke.stapler.Stapler.service(Stapler.java:238) at javax.servlet.http.HttpServlet.service(HttpServlet.java:728) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:135) at com.cloudbees.jenkins.support.slowrequest.SlowRequestFilter.doFilter(SlowRequestFilter.java:37) at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:132) at com.smartcodeltd.jenkinsci.plugin.assetbundler.filters.LessCSS.doFilter(LessCSS.java:46) at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:132) at net.bull.javamelody.MonitoringFilter.doFilter(MonitoringFilter.java:198) at net.bull.javamelody.MonitoringFilter.doFilter(MonitoringFilter.java:176) at net.bull.javamelody.PluginMonitoringFilter.doFilter(PluginMonitoringFilter.java:85) at org.jvnet.hudson.plugins.monitoring.HudsonMonitoringFilter.doFilter(HudsonMonitoringFilter.java:99) at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:132) at hudson.plugins.greenballs.GreenBallFilter.doFilter(GreenBallFilter.java:58) at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:132) at jenkins.metrics.impl.MetricsFilter.doFilter(MetricsFilter.java:125) at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:132) at hudson.util.PluginServletFilter.doFilter(PluginServletFilter.java:126) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at hudson.security.csrf.CrumbFilter.doFilter(CrumbFilter.java:49) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) 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:76) at hudson.security.HudsonFilter.doFilter(HudsonFilter.java:171) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.kohsuke.stapler.compression.CompressionFilter.doFilter(CompressionFilter.java:49) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at hudson.util.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:81) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.kohsuke.stapler.DiagnosticThreadNameFilter.doFilter(DiagnosticThreadNameFilter.java:30) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:611) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:409) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1044) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:313) - locked <0x00000004fc7b3200> (a org.apache.tomcat.util.net.SocketWrapper) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745)
