grabbing tomcat startup time

wish help you to fix your issue I've found the answer (just after posting here which, ironically, seems to be how to find answer's to one's own question.)
The answer was that the port was being used by another process. I should've known but upgraded several different packages will do this. But onto the symptoms:

wish helps you Those aren't processes, those are threads. You only have a single process.

Any of those help I am modifying server.xml config file to enable JAAS (Java Authentication and Authorization Service) (as suggested in TomEE website). When I start Tomcat/TomEE with sh startup.sh, the Linux console says:

  <Realm className="org.apache.catalina.realm.LockOutRealm">
    <!-- This Realm uses the UserDatabase configured in the global JNDI
         resources under the key "UserDatabase".  Any edits
         that are performed against this UserDatabase are immediately
         available for use by the Realm.  -->
    <Realm className="org.apache.catalina.realm.UserDatabaseRealm"
           resourceName="UserDatabase"/>
      <Realm className="org.apache.catalina.realm.JAASRealm" appName="PropertiesLoginModule"
      userClassNames="org.apache.openejb.core.security.AbstractSecurityService$User"
      roleClassNames="org.apache.openejb.core.security.AbstractSecurityService$Group"/>
  </Realm>

To fix this issue I have a SpringMVC app deployed on a Tomcat web server. I tried some optimization to speed up the boot, such as cleaning the web.xml and jar files, removing log files, disabling the defaultTldScan, WebSocket, and JSP. It looks like these optimizations work. ,
cleaning the web.xml