JBOSS high CPU utilization

My Application is installed on JBOSS EAp 6.1 .Few days back we found that the application slowness or end user not able to access the application. We took ps -aux logs, and one of the output is below. [Mon Jun 12 08:55:29.218 2017] 500 46257 90.7 10.2 22713508 6779044 ? Sl Apr26 61791:48 /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.45.x86_64/jre/bin/java -D[Standalone] -server -XX:+UseCompressedOops -Xms2048m -Xmx4096m -XX:MaxPermSize=512m -Djava Looks like this java process was hogging my CPU.but also its in Sl mode. This is my assumption. Can this be the reason of application problem? What could be the reason of high cpu usage? What is the role of this process in JBOSS application server? We didn't take thread dump and Gc logs (gc logs not enabled later we checked) and restarted the server. Now no logs.