Tomcat 3.2.1 Scalability

[Claude LALYRE <la...@xandmail.com>]

Hello,

I downloaded the release build Tomcat 3.2.1
in order to develop a tiny Webmail application
based on JSP technology.

I tested it with 20 connections, it was working
fine. But with 150 connections, the tomcat server
shutdown.

So I do think that it should interesting to 
improve Tomcat scalability.


Best regards.

________________________________________
Claude LALYRE
Internet Mail Developer
Research & Development
X and Mail PARIS
Phone: (33) 01 48 36 89 03
Fax  : (33) 01 48 36 43 77

http://www.xandmail.com
http://demo.xandmail.com/XWebMailV2
________________________________________
  

Re: Tomcat 3.2.1 Scalability

[cm...@yahoo.com]

Hi Claude,

It would be great if you could help improve the 
scalability - it's a difficult task, and we need 
all the help we can get :-)

If tomcat shuts down with 150 threads I would suspect
it's a JVM problem - I did tests up to 200 threads.
It is slow - but that's a different issue ( 3.3 will be
faster ). 

Could you try to "debug" the problem - for example,
try with a different VM. What do you mean by "shutdown" ? 
Do you get a core dump ? Any report on the command line ?
Is it hunged ?

Costin

On Wed, 21 Mar 2001, Claude LALYRE wrote:

> Hello,
> 
> I downloaded the release build Tomcat 3.2.1
> in order to develop a tiny Webmail application
> based on JSP technology.
> 
> I tested it with 20 connections, it was working
> fine. But with 150 connections, the tomcat server
> shutdown.
> 
> So I do think that it should interesting to
> improve Tomcat scalability.
> 
> 
> Best regards.
> 
> ________________________________________
> Claude LALYRE
> Internet Mail Developer
> Research & Development
> X and Mail PARIS
> Phone: (33) 01 48 36 89 03
> Fax  : (33) 01 48 36 43 77
> 
> http://www.xandmail.com
> http://demo.xandmail.com/XWebMailV2
> ________________________________________
> 
>