FW: Memory leak using SSL Tomcat 6.0.16

[Shapovalenko Daniil]

Hello there!

 

I'm using Tomcat 6.0.16 with an extremely simple servlet.

 

The code of servlet is here (functions that doesn't mentioned here are
blank):

...

      protected void doPost(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {

            response.getWriter().write("post!!!");

            response.setStatus(200);

      }               

...

 

Tomcat used is clear distrib except servlet in webapps and server.xml
changed. The source of the server.xml is follow (all content of file
doesn't mentioned here remains original):

...

    <Connector port="8443"

        maxHttpHeaderSize="8192"

        connectionTimeout="60000"

        enableLookups="false"

        disableUploadTimeout="true"

 

        maxThreads="900"

        minSpareThreads="350"

        maxSpareThreads="700"

        acceptCount="700"

        

        protocol="HTTP/1.1"

        SSLEnabled="true"

        scheme="https"

        secure="true"

        clientAuth="false"

        sslProtocol="TLS"

        keystoreFile="/opt/.keystore"

        keystorePass="tomcat" />

...

 

I'm using SSL as you see.

 

I'm running a loader which creates some threads (for example 40) that
sends one POST request without parameters per second.

There are no unusual HTTP headers in the request.

I'm getting 300m for this Tomcat.

 

After about three hours of working it throws an OutOfMemoryError.

 

Exploring the dump at that time I'm found a lot of instances of
com.sun.net.ssl.internal.ssl.SSLSessionImpl
<http://192.168.12.164:7000/class/0xebe303c0>  class. But may be this is
not the reason.

 

Thanks for any ideas and help.

--Daniil.