0 Replies Latest reply on Oct 6, 2006 7:45 AM by Omer Faruk Sen

    jboss as performance tuning

    Omer Faruk Sen Newbie

      Hi,

      Is there any performance tuning document for Jboss/tomcat/mod_jk? I am currently having problems with mod_jk. Mod_jk sometimes doesn't send request to jboss AS .. In mod_jk.log I get following errors:

      [Fri Oct 06 10:39:50 2006][28177:28992] [info] ajp_service::jk_ajp_common.c (1795): (node1) request failed, because of client write error without recovery in send loop attempt=0
      [Fri Oct 06 10:39:50 2006][28177:28992] [info] service::jk_lb_worker.c (873): unrecoverable error 200, request failed. Client failed in the middle of request, we can't recover to another instance.
      [Fri Oct 06 10:39:50 2006][28177:28992] [info] jk_handler::mod_jk.c (2056): Aborting connection for worker=loadbalancer
      [Fri Oct 06 10:39:50 2006][27764:28992] [info] ajp_process_callback::jk_ajp_common.c (1410): Writing to client aborted or client network problems
      [Fri Oct 06 10:39:50 2006][27764:28992] [info] ajp_service::jk_ajp_common.c (1795): (node3) request failed, because of client write error without recovery in send loop attempt=0
      [Fri Oct 06 10:39:50 2006][27764:28992] [info] service::jk_lb_worker.c (873): unrecoverable error 200, request failed. Client failed in the middle of request, we can't recover to another instance.
      [Fri Oct 06 10:39:50 2006][27764:28992] [info] jk_handler::mod_jk.c (2056): Aborting connection for worker=loadbalancer
      [Fri Oct 06 10:39:51 2006][28015:28992] [info] ajp_process_callback::jk_ajp_common.c (1410): Writing to client aborted or client network problems
      [Fri Oct 06 10:39:51 2006][28015:28992] [info] ajp_service::jk_ajp_common.c (1795): (node3) request failed, because of client write error without recovery in send loop attempt=0
      [Fri Oct 06 10:39:51 2006][28015:28992] [info] service::jk_lb_worker.c (873): unrecoverable error 200, request failed. Client failed in the middle of request, we can't recover to another instance.




      I have edited worker.properties and added this line

      worker.node2.cachesize=1000

      After that my httpd.conf:
      <IfModule prefork.c>
      StartServers 30
      MinSpareServers 15
      MaxSpareServers 30
      ServerLimit 2048
      MaxClients 2048
      #MaxRequestsPerChild 4000
      MaxRequestsPerChild 0


      And as last performance tweaking I have edited

      $JBOSS_HOME/server/default/deploy/jbossweb-tomca55.sar/conf/server.xml like:
      <!-- A HTTP/1.1 Connector on port 8080 -->


      <!-- A AJP 1.3 Connector on port 8009 -->


      Now mod_jk accepts more request without problem but I again live some problmes..

      I test my jboss/mod_jk with openwebload.sf.net tool

      openload http://server/app/ 10 100 I get errors

      But with

      openload http://server:8080/app/ 10 100 I get no errors.

      I really appreciate if you enlighen me..
      Best Regards.