Re: Performance problems with Xalan C++

[David N Bertoni/Cambridge/IBM]

Hmm, Xalan-C++ shouldn't be that much slower than the Java processors.
Some more information would help:

   1. The version of Xalan you're testing.
   2. The platform/compiler you're using.
   3. Some idea of how you're using the library.  Code snippets would be
   helpful.
   4. Some sample stylesheets and input documents that you're using.

Dave



                                                                                       
                                                
                      "Devitt,                                                         
                                                
                      William"                 To:      "'[EMAIL PROTECTED]'" 
<[EMAIL PROTECTED]>                        
                      <WJDevitt@homesi         cc:      (bcc: David N 
Bertoni/Cambridge/IBM)                                           
                      de.com>                  Subject: Performance problems with 
Xalan C++                                            
                                                                                       
                                                
                      09/11/2002 01:38                                                 
                                                
                      PM                                                               
                                                
                      Please respond                                                   
                                                
                      to xalan-dev                                                     
                                                
                                                                                       
                                                
                                                                                       
                                                



I am part of a team that has been tasked to compare XSL trasformation
engines for recommendation as a component for a large centralized data
communication handler. We are going to use XML as the communication format,
and plan to use XSL transformations to enable communication between
different systems. We have been using the Xalan C++ libs, but have seen
some
severe performance penalties when XML sizes increase beyond a fairly small
threshold (e.g. transformation takes ~50ms for 2K XML, ~2850ms for 113K
XML). Our system will need to handle some large XML data transfers (on the
order of several MB) and we were wondering if there isn't some way of
getting the Xalan C++ libs to perform any faster. Right now, they are
orders
of magnitude slower than Java transformers, for most practical file sizes.

Thank you.


Bill Devitt
Sr. Programmer/Analyst II

Work Number (904)281-3135
Work Fax (904)281-7575
[EMAIL PROTECTED]