using too much soap?

[Cyrus Adkisson <ca...@rooseveltmedia.com>]

I'm running a loop on acomputer that repeatedly calls a Client program
which, in turn, accesses a remote service over and over again. And it
works fine for about the first 10-20 iterations. Then I get "Exception
from service object: null" over and over. If I restart the remote soap
service, it starts to work for a while before crapping out again. 

Even weirder is that after it starts crapping out (regardless of
restart), every 50 or so times, it'll work properly, then go right back
to sucking. 

I think I'm either overloading Tomcat (5.0.12), SOAP, or mysql. Can
someone guide me to which one it probably is?

Cyrus

Re: using too much soap?

[Cyrus Adkisson <ca...@rooseveltmedia.com>]

Another piece of evidence: once the loop begins, a couple of java
processes start to really use up resources on the remote service's
computer. 

Changing the scope from "Request" to "Application" didn't have any
positive effect. 

Cyrus

On Mon, 2004-01-12 at 21:25, Scott Nichol wrote:
> Do you have a stack trace for the "Exception from service object: null"?  Needless to say, that would be a big help.
> 
> My next question would be, might you be running out of some resource on Tomcat?  For example, have you configured a small number of sessions?  Are you re-using SOAPHTTPConnection instances on the client?  Those are what maintain session information.  If your client is ignoring the session cookie it gets, your server is creating a session for each invocation (unless you are using a nightly build and have set the option in your deployment descriptor to not create a session for a request).
> 
> I am sure there are other possibilities, but sessions are what leaps to mind.
> 
> Scott Nichol
> 
> Do not send e-mail directly to this e-mail address,
> because it is filtered to accept only mail from
> specific mail lists.
> 
> ----- Original Message ----- 
> From: "Cyrus Adkisson" <ca...@rooseveltmedia.com>
> To: <so...@ws.apache.org>
> Sent: Monday, January 12, 2004 8:33 PM
> Subject: using too much soap?
> 
> 
> > I'm running a loop on acomputer that repeatedly calls a Client program
> > which, in turn, accesses a remote service over and over again. And it
> > works fine for about the first 10-20 iterations. Then I get "Exception
> > from service object: null" over and over. If I restart the remote soap
> > service, it starts to work for a while before crapping out again. 
> > 
> > Even weirder is that after it starts crapping out (regardless of
> > restart), every 50 or so times, it'll work properly, then go right back
> > to sucking. 
> > 
> > I think I'm either overloading Tomcat (5.0.12), SOAP, or mysql. Can
> > someone guide me to which one it probably is?
> > 
> > Cyrus
> > 
> > 
> 
> 

Re: using too much soap?

[Scott Nichol <sn...@scottnichol.com>]

Do you have a stack trace for the "Exception from service object: null"?  Needless to say, that would be a big help.

My next question would be, might you be running out of some resource on Tomcat?  For example, have you configured a small number of sessions?  Are you re-using SOAPHTTPConnection instances on the client?  Those are what maintain session information.  If your client is ignoring the session cookie it gets, your server is creating a session for each invocation (unless you are using a nightly build and have set the option in your deployment descriptor to not create a session for a request).

I am sure there are other possibilities, but sessions are what leaps to mind.

Scott Nichol

Do not send e-mail directly to this e-mail address,
because it is filtered to accept only mail from
specific mail lists.

----- Original Message ----- 
From: "Cyrus Adkisson" <ca...@rooseveltmedia.com>
To: <so...@ws.apache.org>
Sent: Monday, January 12, 2004 8:33 PM
Subject: using too much soap?


> I'm running a loop on acomputer that repeatedly calls a Client program
> which, in turn, accesses a remote service over and over again. And it
> works fine for about the first 10-20 iterations. Then I get "Exception
> from service object: null" over and over. If I restart the remote soap
> service, it starts to work for a while before crapping out again. 
> 
> Even weirder is that after it starts crapping out (regardless of
> restart), every 50 or so times, it'll work properly, then go right back
> to sucking. 
> 
> I think I'm either overloading Tomcat (5.0.12), SOAP, or mysql. Can
> someone guide me to which one it probably is?
> 
> Cyrus
> 
>