java – Tomcat 9 slow response while application is processing the request in quick time

I am facing slow response issues with Tomcat9. Following are the environment details
Tomcat 9.0.46,
OpneJDK 11.0.11,
Linux – RHEL 3.10.

A Springboot application deployed Tomcat9 is processing a request in quick time (800-900 milliseconds which was calculated on @PostMapping method).. and handing over the response to HttpServlet.. which then recorded as 9-10 secs as response time on localhost_access logs of tomcat. Can someone help me to understand what’s happening within tomcat once response is handed over to httpservlet.

Thanks in advance.