web service accounting

[samir_chouthai <sv...@yahoo.com>]

Hi,
 
I want to do some accounting related to the actual resources consumed by a web service. The information I seek is how much CPU a web service has consumed up to a given time or the %CPU it consumes when it is processing a request, how much is the memory consumption at that time.
 
Is there any way .... at all to do this? Has anyone tried anything similar before ?
 
I would also like to know if the web service runs as an independent process or thread within a container ?
 
Java 1.5 beta has some support for getting info about a running java process - via the 
Java Virtual Machine Tool Interface http://java.sun.com/j2se/1.5.0/docs/guide/jvmti/jvmti.html
 
But can I relate a web-service to a running java process ?
 
Any help is greatly appreciated.
 
Thanks in advance,
 
Samir Chouthai.

		
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Re: web service accounting

[samir_chouthai <sv...@yahoo.com>]

Thanks Nelson,

I'll keep you all posted if I get anywhere.

- Samir.

--- Nelson Minar <ne...@monkey.org> wrote:
> >I want to do some accounting related to the actual
> resources consumed
> >by a web service. The information I seek is how
> much CPU a web
> >service has consumed up to a given time or the %CPU
> it consumes when
> >it is processing a request, how much is the memory
> consumption at
> >that time.
> 
> I think a tool like you describe would be very
> interesting to many web
> services publishers.
> 
> I looked into doing something similar way back in
> Java 1.1 and found
> it essentially impossible. JVMTI, which you
> reference, or its earlier
> versions JVMPI and JVMDI, may give you access to the
> raw data you need
> like CPU time and memory usage.
> 
> The Axis-specific part of this is pretty simple.
> Axis web services run
> as servlets, so if you have a solution that works
> for servlets it will
> work for Axis as well. You may want to tune things a
> bit specially for
> Axis to know how much time is spent in the Axis
> marshalling code, how
> much time is spent actually executing the service.
> 
> Let us know if you get anywhere!



	
		
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Re: web service accounting

[Nelson Minar <ne...@monkey.org>]

>I want to do some accounting related to the actual resources consumed
>by a web service. The information I seek is how much CPU a web
>service has consumed up to a given time or the %CPU it consumes when
>it is processing a request, how much is the memory consumption at
>that time.

I think a tool like you describe would be very interesting to many web
services publishers.

I looked into doing something similar way back in Java 1.1 and found
it essentially impossible. JVMTI, which you reference, or its earlier
versions JVMPI and JVMDI, may give you access to the raw data you need
like CPU time and memory usage.

The Axis-specific part of this is pretty simple. Axis web services run
as servlets, so if you have a solution that works for servlets it will
work for Axis as well. You may want to tune things a bit specially for
Axis to know how much time is spent in the Axis marshalling code, how
much time is spent actually executing the service.

Let us know if you get anywhere!