Re: How to ensure Tomcat to load multiple instances of a servlet, to handle simultaneously multiple request ?

[Hariharasubramanian Ranganathan]

> - the Servlet implements SinglethreadModel,

Donot implement SingleThreadedModel interface which synchronizes the
servlet.

Hari


----- Original Message -----
From: "gr�goire nogier" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Tuesday, July 31, 2001 3:11 PM
Subject: How to ensure Tomcat to load multiple instances of a servlet, to
handle simultaneously multiple request ?


> How to ensure Tomcat to load multiple instances of a servlet, to handle
> simultaneously multiple request ?
>
> I'v developed a servlet application in tomcat/apache, on NT.
> I tried a very simple load test :
>    - 1) from a first pc, I send a request which neeed a very long database
> access (3 minutes),
>    - 2) from another pc, I send a very simple request (which should be
> traited immediately)
>    => the result is that the second request wait 3 minutes before
receiving
> its response. The requests are served the one after the other.
>
> I'm not sure to understand how tomcat works, but I imagined that it should
> be possible to load multiple servlet process, to handle 20 request
> simultaneously.
> It seems not.
>
> - should I duplicate the servlet in the file web.xml ?
> - should I duplicate the servlet context ?
> - should I define more workers ? (how to ?)
> - should I use some other connector, or RequestInterceptor ?
>
> Here is a short description of the configuration used :
> - tomcat-v3.2.2, apache-v1.3
> - the Servlet implements SinglethreadModel,
> - the file : mod_jk.conf mount the servlet-path with the ajp13 worker,
> - the file : server.xml defines a PoolTcpConnector Ajp13ConnectionHandler
> (parameters are: max_threads=50, max_spare_threads=25,
> min_spare_threads=10),
> - the file : workers.properties defines two workers
> (worker.list=ajp13,loadbalancer)
> - the file : web.xml defines two servlet (only one seems to be used...)
>
> I need some help !
>
> Gregoire Nogier
>
>