On 05/11/2015 16:58, Datta, Abir - Ealing wrote: > Hi, > > > Background > > Application server has been upgraded from tomcat 6 to tomcat 8. We are > experiencingperformance issues in transactions which involve XML processing > using DOM4J and xerces api. The application uses dom4j-1.6.1.jar and > xercesImpl-2.10.0.jar. There has been no change in the application which was > deployed in tomcat 6 to the application deployed in tomcat 8. > > Problem > > We use Dynatrace to monitor our application. We have seen that in tomcat 8, > the time taken for classloading api has increased significantly, leading to > performance degradation. This tomcat 8 classloading time and api breakdown > leading to classloading<http://i.stack.imgur.com/zblrc.jpg> shows the time > taken by the classloading api in Tomcat 8 and this shows what was happening > in tomcat 6<http://i.stack.imgur.com/LOk5e.jpg>. > > From the above pics, we can see that Classloading is invoked from the xerces > apis(Xml Processing in the pic), so the transactions using the xerces api > have shown performance degradation. > > Please help in understanding why the classloading times have increased in > tomcat 8 and how to get rid of this problem in tomcat8.
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