Performance Issue while upgrading from Embedded Tomcat 6 to Tomcat 7

[Chirag Dewan]

Hi All,

I have upgraded my application from Embedded Tomcat 6 to Embedded Tomcat 7. 
With Tomcat 6, I was getting around 70000 Transactions per sec with a simple 
HTTP service,which sets the HTTPResponse and returns it.

Now with Tomcat 7,I am getting 54000 transactions per sec. Going through the 
web I figured out that it may be due to Servlet 3.0 API. I have updated my 
web.xml so that Servlet API doesn't scan the classes for annotations. This is 
how my web.xml looks like:

<web-app metadata-complete="true" xmlns="http://java.sun.com/xml/ns/javaee"; 
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; 
  xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
                      http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"; 
  version="3.0"> 



Can anyone provide some other measures I can implement? 


I am using an HTTP Client to test my performnace.

Thanks