Count stuck threads in WebLogic

nice little script to count the stuck threads in all instances of WebLogic (or any other Java processes) running under the current user:

#!/bin/bash


CURRENTUSER=`whoami`
echo "pid user stuck"
ps -ef | grep java | grep -v grep | while read LINE
do
  SOAUSER=$(echo $LINE | awk '{print $1}')
  if [ $SOAUSER == $CURRENTUSER ] 
  then
   PID=$(echo $LINE | awk '{print $2}')
   NAME=$(echo $LINE | sed -n -e 's/.*-Dweblogic.Name=\([^ ]*\).*/\1/p')
   if [ -z "$NAME" ] ; then
     NAME=$(echo $LINE | sed -n -e 's/.*weblogic.\(NodeManager\).*/\1/p')
   fi
   if [ -z "$NAME" ] ; then
     NAME="UnknownApp"
   fi
   STUCKCOUNT=`jstack $PID | grep "STUCK" | wc -l`
   echo "PID=" $PID "NAME=" $NAME "STUCKCOUNT" $STUCKCOUNT
  fi
done

Nice little JSP to generate threads on demand

<%

 final String threads = request.getParameter("threads");
 final String period = request.getParameter("period");
 try {
  for (int t = 0; t < Integer.parseInt(threads); t++ ) {
   System.out.println("starting thread " + t + " of " + threads);
   Thread thread = new Thread(new Runnable() {
       public void run() {
        try {
         System.out.println("started with period " + period);
         Thread.sleep(Integer.parseInt(period) * 1000);
     }
     catch (Throwable t) {
      t.printStackTrace();
     }
       }
   });
   
   thread.start();
  
  };
 }
 catch (Throwable t) {
  t.printStackTrace();
 }

%>

and you invoke it as

http://acme.com:10001/wlstuck/index.jsp?threads=30&period=40

and you redeploy with

import os

theapplication=str(sys.argv[1])


print "redeploying", theapplication
os.system("rm -rf /opt/oracle/domains/osbts1do/servers/osbts1as/tmp/_WL_user/" + theapplication + "/")
connect('Pierluigi', 'weblogic1', 't3://acme.com:9001')
redeploy(theapplication)
exit()

problem is that these threads will not be part of the WebLogic thread pool, and as such they will not be monitored.

A better option is a shell script:

for i in {1..30}
do
     wget http://acme.com:10001//wlstuck &
done

and the index.jst is simply:

Thread.sleep(390 * 1000);