Long Startup

For a few versions now (we upgrade to every release), after restarting Tomcat, XWiki takes a very long time to load. Times out the first 2 or 3 times I try to load it in the browser.

15-Mar-2019 19:46:55.782 INFORMATION [localhost-startStop-1] org.apache.catalina.util.SessionIdGeneratorBase.createSecureRandom Creation of SecureRandom instance for session ID generation using [SHA1PRNG] took [305,590] milliseconds.

15-Mar-2019 19:46:58.108 INFORMATION [main] org.apache.catalina.startup.Catalina.start Server startup in 350718 ms{{}}