Re: testing axis with tomcat and 100 concurrent users

[Barry Levinson]

coyoteConnector seems to just be the new name for HttpConnector (different in different tomcat 4.x versions).

hmm...if it works the first time through, maybe the clients aren't letting go of their connections.

You might want to try running "netstat -an" and seeing how many active connections you have. Also, check your clients. See if they correctly close and reopen HTTP connections to Tomcat.

You may also want to run Ethereal (or some other packet sniffer), and see whats going on at a connection level.

Of course, it may be something more complicated than the connection to tomcat, but that might be the best place to start.

Other suggestions :
-you could try increasing Tomcats logging (don't know how exactly)
-you can start tomcat in JPDA mode, and connect a JPDA debugger (I highly recomend IntelliJ IDEA, comes with debugger). Instead of $CATALINA_HOME/bin/catalina.sh start, run $CATALINA_HOME/bin/catalina.sh jpda start).

Good luck,

--Barry

Ernesto Guevara wrote:

Hi:

I am using org.apache.coyote.tomcat4.coyoteConnector on port 8080. It was
set with maxProcessors in 75 (default) and the I changed it to 150. After
that I restarted tomcat but it continues failing.
It worked fine the first time I run the test with 100 clients and the just
hang up the next times.
No message in the log... what can it be?

thanx

Ernesto



"Barry Levinson" <[EMAIL PROTECTED]> wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...

Sounds like you may have run out of tomcat processors.

What does your tomcat server.xml configuration look like? Are you using
org.apache.catalina.connector.http.HttpConnector as a connector, and if
so, what do you have maxProcessors set to? (it should probably be > 100
for you test).

--Barry

Ernesto Guevara wrote:

I am doing some testing with concurrency in axis with tomcat, under RH

Linux

7.3
I created a client with multithreads to test with 1, 5, 10, 25, 50 and

100

concurrent calls.
The service is a small app running in a server.
Client runs in a differente machine, inside a LAN.
It just doesn�t work with 100 clients, calls receive an error for

connection

time exceded in the client.
But I can not see anything in the log for tomcat, how can I know what
happended exactly?

thanx


--
Ernesto A. Guevara
Departamento de Ciencia de la Computaci�n Pontificia Universidad Cat�lica

de

Chile
Escuela de Ingenier�a Tel�fono: +56 2 6864067
Vicu�a Mackenna 4860 E-Mail: [EMAIL PROTECTED]
Macul / Santiago - Chile Fax: +56 2 6864444