Hello,

Jenkins started to hang without any particular reason. It has been worked fine for few months. I've upgraded it to the 2.7.3 but the behaviour is the same.

C:\Program Files (x86)\Jenkins>"c:\Program Files (x86)\Jenkins\jre\bin\java.exe"
-jar jenkins.war 1>>dump.log
Sep 04, 2016 6:02:37 PM org.eclipse.jetty.util.log.JavaUtilLog info
INFO: Logging initialized @8883ms
Sep 04, 2016 6:02:37 PM winstone.Logger logInternal
INFO: Beginning extraction from war file
Sep 04, 2016 6:02:37 PM org.eclipse.jetty.util.log.JavaUtilLog warn
WARNING: Empty contextPath
Sep 04, 2016 6:02:37 PM org.eclipse.jetty.util.log.JavaUtilLog info
INFO: jetty-9.2.z-SNAPSHOT
Sep 04, 2016 6:02:43 PM org.eclipse.jetty.util.log.JavaUtilLog info
INFO: NO JSP Support for /, did not find org.eclipse.jetty.jsp.JettyJspServlet
Sep 04, 2016 6:02:44 PM org.eclipse.jetty.util.log.JavaUtilLog info
INFO: Started w.@99998a

{/,file:/C:/Users/Administrator/.jenkins/war/,AVAILABLE} { C:\Users\Administrator\.jenkins\war}

Sep 04, 2016 6:02:44 PM org.eclipse.jetty.util.log.JavaUtilLog info
INFO: Started ServerConnector@1ffd9f1

{HTTP/1.1} {0.0.0.0:8080}

Sep 04, 2016 6:02:44 PM org.eclipse.jetty.util.log.JavaUtilLog info
INFO: Started @16289ms
Sep 04, 2016 6:02:44 PM winstone.Logger logInternal
INFO: Winstone Servlet Engine v2.0 running: controlPort=disabled
Sep 04, 2016 6:02:45 PM jenkins.InitReactorRunner$1 onAttained
INFO: Started initialization
Sep 04, 2016 6:02:45 PM hudson.ClassicPluginStrategy createPluginWrapper
INFO: Plugin pending-changes.jpi is disabled
Sep 04, 2016 6:02:45 PM hudson.ClassicPluginStrategy createPluginWrapper
INFO: Plugin viewVC.jpi is disabled
Sep 04, 2016 6:02:45 PM hudson.ClassicPluginStrategy createPluginWrapper
INFO: Plugin WebSVN2.jpi is disabled
Sep 04, 2016 6:02:45 PM jenkins.InitReactorRunner$1 onAttained
INFO: Listed all plugins
Sep 04, 2016 6:02:48 PM jenkins.InitReactorRunner$1 onAttained
INFO: Prepared all plugins

I've included the thread dump in a file.

Could you take a look?

Regards.