we have a nasty problem with our application which runs in a JBoss/Tomcat ApplicationServer.
after a while (sporadicaly) JBoss does not response, or is very slow, for every client. If i look after the system (linux RedHat 6.2) one of the java-processes take 100% of CPU. It is the third process in the list (e.g): PID PPID 1108 1 ==> started java -server -D. . . 1151 1108 1152 1151 ==> this is the process with 100% 115? 1151 more than 80 processes . .
If this problem occurs I can't stop the server 1108 with SIGHUP. Only if I do a kill -9 1152 after, the server shut down.
Server runs on Linux RedHat 6.2 / javaVM StandardEdition HotSpot 1.3.1-b24 JBoss-2.2.2_Tomcat-3.2.2 Our application : EJB 15*CMP-Entity 20*Session 1*StatefulSession and a couple of JSP-pages