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Posted to java-user@axis.apache.org by Ernesto Guevara <eg...@ing.puc.cl> on 2002/12/11 14:06:26 UTC
testing axis with tomcat and 100 concurrent users
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: eguevara@ing.puc.cl
Macul / Santiago - Chile Fax: +56 2 6864444
Re: testing axis with tomcat and 100 concurrent users
Posted by Barry Levinson <ba...@levinson.us>.
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" <ba...@levinson.us> wrote in message
>news:3DF74AD8.6050705@levinson.us...
>
>
>>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 Computación Pontificia Universidad Católica
>>>
>>>
>de
>
>
>>>Chile
>>>Escuela de Ingeniería Teléfono: +56 2 6864067
>>>Vicuña Mackenna 4860 E-Mail: eguevara@ing.puc.cl
>>>Macul / Santiago - Chile Fax: +56 2 6864444
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>
>>
>>
>
>
>
>
>
>
Re: testing axis with tomcat and 100 concurrent users
Posted by Ernesto Guevara <eg...@ing.puc.cl>.
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" <ba...@levinson.us> wrote in message
news:3DF74AD8.6050705@levinson.us...
> 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: eguevara@ing.puc.cl
> >Macul / Santiago - Chile Fax: +56 2 6864444
> >
> >
> >
> >
> >
> >
> >
> >
> >
>
>
>
Re: testing axis with tomcat and 100 concurrent users
Posted by Barry Levinson <ba...@levinson.us>.
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 Computación Pontificia Universidad Católica de
>Chile
>Escuela de Ingeniería Teléfono: +56 2 6864067
>Vicuña Mackenna 4860 E-Mail: eguevara@ing.puc.cl
>Macul / Santiago - Chile Fax: +56 2 6864444
>
>
>
>
>
>
>
>
>