title: Tomcat7 to Tomcat8 performance degraded (Almost 50%)
body: <p>I did the app server upgrade from tomcat7 to tomcat8 on our production env. Hardware configuration are exactly same as old env. </p>
  
  <p>I am seeing avg response time increased almost 50% (from 204ms to ~450ms) I looked at our APM and I can see the JSP processing time  increased in tomcat8 app server. </p>
  
  <p>Anyone out here faced this issue before? If so please share the solution.</p>
  
  <p>Here am attaching tomcat7 and tomcat8 key transaction breakdown. </p>
  
  <p>I see JSP processing time significantly increased on tomcat8.</p>
  
  <p>Tomcat7:</p>
  
  <p><a href="https://i.stack.imgur.com/HEUc5.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/HEUc5.png" alt="Tomcat7 Key transaction breakdown"></a> </p>
  
  <p>Tomcat8:
  <a href="https://i.stack.imgur.com/YKMis.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/YKMis.png" alt="Tomcat8 Key transaction breakdown"></a></p>