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   RE: [xml-dev] Fast text output from SAX?

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> -----Original Message-----
> From: Dennis Sosnoski [mailto:dms@sosnoski.com] 
> Sent: Friday, April 16, 2004 17:25
> To: bob@wyman.us
> Cc: 'Elliotte Rusty Harold'; 'XML DEV'
> Subject: Re: [xml-dev] Fast text output from SAX?
> Bob Wyman wrote:
> >Dennis Sosnoski wrote:
> >  
> >
> >>I'm curious what benchmarks were presented at the
> >>Binary workshop in support of this point.
> >>    
> >>
> >	Read the OSS Nokalva submission.[1] The section that 
> talks about 
> >encodings of the Infoset is most relevant to an XBis comparison.
> >Note: The XML documents used to do the tests were the ones 
> that *you* 
> >defined[2]...
> >	I am told that the OSS Nokalva system has evolved since 
> the workshop. 
> >Supposedly, we can now expect them to deliver better compression and 
> >better speed. However, I've never seen this documented.
> >
> >		bob wyman
> >
> >[1] 
> >http://www.w3.org/2003/08/binary-interchange-workshop/32-OSS-
>[2] Sosnoski's XML Test Documents page: 
>Thanks for the pointer, I don't think I'd gone through their paper 
>before. It'll be interesting to see how close their ASN.1 Infoset 
>approach can get to XBIS performance (at least in terms of the ratio to 
>text parse/generate speed; since XBIS is only Java at present and theirs 
>appears to be only C++ a direct comparison is difficult).

Please keep in mind the following points:

1) That test was based on an early draft of the Fast Infoset standard
(called X.695 at that time).  The Fast Infoset draft has changed a lot since

2) The primary objective of that test program was to measure size.  The
speed results obtained are hard to evaluate, although they are always better
than Xerces/C 2.2 parsing XML.  I believe that the code could be optimized
to achieve a higher speed, especially with the new draft of the Fast Infoset

Alessandro Triglia
OSS Nokalva

>- Dennis
>Dennis M. Sosnoski
>Enterprise Java, XML, and Web Services
>Training and Consulting
>Redmond, WA  425.885.7197

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