Could you please suggest something in TOMCAT 8 which might be leading to the
problem mentioned below.
Thanks,
Abir
________________________________________
From: Datta, Abir - Ealing <ada...@wiley.com>
Sent: 05 November 2015 17:17
To: Tomcat Users List
Subject: RE: Classloading performance problems, Tomcat 8 upgrade from tomcat 6
Hi Mark,
Thanks for the response. The setting is already enabled. We have upgraded to
tomcat version 8.0.26
<Host name="localhost" appBase="webapps"
unpackWARs="true" autoDeploy="true">
Thanks,
Abir
________________________________________
From: Mark Thomas <ma...@apache.org>
Sent: 05 November 2015 17:07
To: Tomcat Users List
Subject: Re: Classloading performance problems, Tomcat 8 upgrade from tomcat 6
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.
Try enabling unpackWARs.
Mark
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