topic Authentication causes threads to lock up (JVM issue?) in Alfresco Archive https://connect.hyland.com/t5/alfresco-archive/authentication-causes-threads-to-lock-up-jvm-issue/m-p/240883#M194013 <HTML><HEAD></HEAD><BODY><SPAN>This may or may not be related to why I am having so many authentication problems, but I believe it needs its own thread…</SPAN><BR /><BR /><SPAN>My setup as follows:</SPAN><BR /><SPAN>-Windows Server 2008 R2</SPAN><BR /><SPAN>-Alfresco Communty 3.2r2</SPAN><BR /><SPAN>-JDK 6u18 (x64)</SPAN><BR /><SPAN>-Tomcat 6.0.24 (x64) w/ ARP dlls</SPAN><BR /><SPAN>-JVM Confguration: </SPAN><BR /><PRE class="language-none line-numbers"><CODE>-Dcatalina.base=D:\Alfresco\tomcat -Dcatalina.home=D:\Alfresco\tomcat -Djava.endorsed.dirs=D:\Alfresco\tomcat\endorsed -Djava.io.tmpdir=D:\Alfresco\tomcat\temp -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djava.util.logging.config.file=D:\Alfresco\tomcat\conf\logging.properties -Dalfresco.home=D:\Alfresco -Dcom.sun.management.jmxremote=true -XX:PermSize=128m -XX:MaxPermSize=256m -XX:ReservedCodeCacheSize=64m -Xcomp -Xbatch -Xms2048m -Xmx3072m -Xss1024k <SPAN class="line-numbers-rows"><SPAN>‍</SPAN></SPAN></CODE></PRE><BR /><SPAN>Any attempt at authentication causes a locks up the java process. Having checked JConsole with the Topthread plugin I have narrowed it down to the SESS_W0_LSN1 (where the 0 &amp; 1 can vary) series of threads. If I try to authenticate again, another thread is created and it locks up (uses 100% CPU). It seems to happen whether I am connecting via CIFS or Webdav, or Alfresco Explorer.</SPAN><BR /><BR /><SPAN>I have had this same issue with inbuilt NTLM and Passthru authentication. It happens whether I'm on a machine which I don't have authentication issues (i.e. XP, Server 2003) or otherwise (Vista, 7, Server 2008)</SPAN><BR /><BR /><SPAN>An example of the thread info from JConsole is as follows:</SPAN><BR /><PRE class="language-none line-numbers"><CODE>Name: Sess_W0_LSN1<BR />State: RUNNABLE<BR />Total blocked: 389&nbsp; Total waited: 0<BR /><BR />Stack trace: <BR />org.alfresco.jlan.netbios.win32.Win32NetBIOS.Receive(Native Method)<BR />org.alfresco.jlan.smb.server.win32.Win32NetBIOSPacketHandler.readPacket(Win32NetBIOSPacketHandler.java:133)<BR />org.alfresco.jlan.smb.server.SMBSrvSession.run(SMBSrvSession.java:1264)<BR />java.lang.Thread.run(Thread.java:619)<SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN></CODE></PRE><BR /><SPAN>When&nbsp; shut down the server I get these sorts of errors (among others):</SPAN><BR /><PRE class="language-none line-numbers"><CODE><BR />SEVERE: A web application created a ThreadLocal with key of type [org.alfresco.repo.security.authentication.AuthenticationUtil.ThreadLocalStack] (value [org.alfresco.repo.security.authentication.AuthenticationUtil$ThreadLocalStack@1cad68c5]) and a value of type [java.util.Stack] (value [[]]) but failed to remove it when the web application was stopped. To prevent a memory leak, the ThreadLocal has been forcibly removed.<BR /><BR />SEVERE: A web application created a ThreadLocal with key of type [java.lang.ThreadLocal] (value [java.lang.ThreadLocal@2d84562d]) and a value of type [org.alfresco.filesys.alfresco.AlfrescoClientInfo] (value [[username:[B@4b35bbb3,MACHINE,Windows 2002 Service Pack 3 2600]]) but failed to remove it when the web application was stopped. To prevent a memory leak, the ThreadLocal has been forcibly removed.<BR /><SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN></CODE></PRE><BR /><SPAN>What should I do? Is this an Alfresco or JVM bug?</SPAN></BODY></HTML> Thu, 04 Feb 2010 23:23:41 GMT maximus007 2010-02-04T23:23:41Z Authentication causes threads to lock up (JVM issue?) https://connect.hyland.com/t5/alfresco-archive/authentication-causes-threads-to-lock-up-jvm-issue/m-p/240883#M194013 This may or may not be related to why I am having so many authentication problems, but I believe it needs its own thread…My setup as follows:-Windows Server 2008 R2-Alfresco Communty 3.2r2-JDK 6u18 (x64)-Tomcat 6.0.24 (x64) w/ ARP dlls-JVM Confguration: -Dcatalina.base=D:\Alfresco\tomcat -Dcatalina. Thu, 04 Feb 2010 23:23:41 GMT https://connect.hyland.com/t5/alfresco-archive/authentication-causes-threads-to-lock-up-jvm-issue/m-p/240883#M194013 maximus007 2010-02-04T23:23:41Z Re: Authentication causes threads to lock up (JVM issue?) https://connect.hyland.com/t5/alfresco-archive/authentication-causes-threads-to-lock-up-jvm-issue/m-p/240884#M194014 <HTML><HEAD></HEAD><BODY><SPAN>Small update - disabling CIFS appears to stop the issue, even though the hang occurred from authentication in other places.</SPAN><BR /><BR /><SPAN>Disabling CIFS is hardly a good fix!</SPAN><BR /><BR /><SPAN>Should I submit this as a bug?</SPAN></BODY></HTML> Fri, 05 Feb 2010 03:05:38 GMT https://connect.hyland.com/t5/alfresco-archive/authentication-causes-threads-to-lock-up-jvm-issue/m-p/240884#M194014 maximus007 2010-02-05T03:05:38Z