XML versus SOAP/WSDL Performance

[Aiko Pras <pras@ctit.utwente.nl>]

Hi all

Recently I've had a number of discussions on the performance differences 
between network management approaches that use XML technology, and 
approaches that use web services (SOAP/WSDL). Is there anyone who has 
real experience in this area, or know pointers to studies on this?

I want to create a list of potential performance problems. I'm aware of 
the following issues thusfar:
- SOAP/WSDL is more verbose than plain XML. Therefore more
  bandwidth (and memory) will be needed.
- downloading WSDL descriptions may be time consuming. In case
  of standardized descriptions, it seems possible however to
  caching or even hard-code them.
- WSDL descriptions allow the inclusion of newly defined data types,
  which must be downloaded from somewhere via the web. This may take
  a lot of time.

Useful reference i found:
http://www-106.ibm.com/developerworks/webservices/library/ws-testsoap/#h3

Aiko


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