Wolf-Dieter Fink [http://community.jboss.org/people/wdfink] created the discussion "Re: JBoss 4.2 high thread consumption" To view the discussion, visit: http://community.jboss.org/message/566902#566902 -------------------------------------------------------------- Hi, the behaviour depends on many things, so please give more informations, e.g. attach Threaddump and configuration files. What exact JBoss version you use, community or EAP? What server configuration (all, defaul...) you use? What is your addon configuration? You can check a little by yourself, start with a new JBoss and add step by step your configuration and check what happen. -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/566902#566902] Start a new discussion in Performance Tuning at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]

Jean-Pierre saintagne [http://community.jboss.org/people/isagarran] created the discussion "Re: JBoss 4.2 high thread consumption" To view the discussion, visit: http://community.jboss.org/message/567111#567111 -------------------------------------------------------------- Hello, Thanks for your quick replies. I did a mistake for my JBoss level. I post all i have : Jboss startup : JBoss Bootstrap Environment JBOSS_HOME: /opt/jboss JAVA: /opt/java/bin/java JAVA_OPTS: -Dprogram.name=run.sh -Xms512m -Xmx512m -Xcompressedrefs -Xoptionsfile=/app/jvm.conf CLASSPATH: /opt/jboss/bin/run.jar:/opt/java/lib/tools.jar ***** 01:00:58,734 INFO  [Server] Starting JBoss (MX MicroKernel)... 01:00:58,915 INFO  [Server] Release ID: JBoss [EAP] 4.3.0.GA_CP07 (build: SVNTag=JBPAPP_4_3_0_GA_CP07 date=200911251949) …. 01:01:04,258 INFO  [ServerInfo] Java version: 1.6.0,IBM Corporation 01:01:04,258 INFO  [ServerInfo] Java VM: IBM J9 VM 2.4,IBM Corporation 01:01:04,258 INFO  [ServerInfo] OS-System: AIX 5.3,ppc64 ….... 01:02:01,147 [main] INFO  [AjpProtocol] Initializing Coyote AJP/1.3 on ajp-173.5.1.80-8009 ….... 01:02:01,215 [main] INFO  [StandardEngine] Starting Servlet Engine: JBossWeb/2.0.0.GA_CP then file /app/jvm.conf -Dcom.ibm.tools.attach.enable=no -Xlp4k -Xgcpolicy:subpool then jacorb.properties (where thread pool is defined) ######################### #                       # #   POA Configuration   # #                       # ######################### # displays a GUI monitoring tool for servers jacorb.poa.monitoring=off # thread pool configuration for request processing jacorb.poa.thread_pool_max=500 jacorb.poa.thread_pool_min=200 # if set, request processing threads in thePOA # will run at this priority. If not set or invalid, # MAX_PRIORITY will be used. #jacorb.poa.thread_priority= # Properties controlling the POA's request queue.  If queue_wait is off, # then if there are more than queue_max requests in the queue, the # client gets TRANSIENT exceptions for any requests.  If queue_wait is on, # then the call blocks at the server side until no more than queue_min # requests are left in the queue.  The new request is then delivered as usual. jacorb.poa.queue_wait=off jacorb.poa.queue_max=100 jacorb.poa.queue_min=10 Then oracle datasource <datasources>   <local-tx-datasource>     <jndi-name>MyDS</jndi-name>     <use-java-context>false</use-java-context>     <connection-url>jdbc:oracle:thin:@myHost:1521:DBname</connection-url>     <driver-class>oracle.jdbc.driver.OracleDriver</driver-class>     <user-name>myName</user-name>     <password>mypassword</password>     <min-pool-size>15</min-pool-size>     <max-pool-size>1000</max-pool-size>     <new-connection-sql>ALTER SESSION SET CONSTRAINTS = DEFERRED</new-connection-sql>     <valid-connection-checker-class-name>org.jboss.resource.adapter.jdbc.vendor.OracleValidConnectionChecker</valid-connection-checker-class-name>     <exception-sorter-class-name>org.jboss.resource.adapter.jdbc.vendor.OracleExceptionSorter</exception-sorter-class-name>     <prefill>true</prefill>     <metadata>         <type-mapping>Oracle9i</type-mapping>     </metadata>   </local-tx-datasource> </datasources> Normally, i expect 200 (corba thread pool) + 15 (datasource) + Jboss thread pool = around 300 threads. I followed the activethreadcount and the JVM start at 276 at 01H00 up to 7:30 then 670 from 07:30 to 07:40 then 1078 to 1500 from 07:40 to 08:00 This number doesn't go down. In some JVM, it increases. I don't know why i get them as i don't have too much activity on it. I took a thread dump and i saw no activity with 1000 requestProcessor doing nothing. I can post the thread as an attached file but i don't know how. regards. -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/567111#567111] Start a new discussion in Performance Tuning at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]

Peter Johnson [http://community.jboss.org/people/peterj] created the discussion "Re: JBoss 4.2 high thread consumption" To view the discussion, visit: http://community.jboss.org/message/567195#567195 -------------------------------------------------------------- My guess is that the JVM fired up this thread on its own accord in support of CORBA. Or it could be simthing releated to an app you have deployed. JBoss AS thread dumps on Windows and Linux don't show any threads with a similar stack trace. I don't know anything about the JVM on AIX - you might have to get someone who knows that JVM to take a look at this. -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/567195#567195] Start a new discussion in Performance Tuning at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]