RE: Transforming large XML docs in small amounts of m

> >> I think that transforming 150Mb of data in 400Mb of RAM would be a 
> >> sensible target (is this sensible?)
> > 
> > That's ambitious. To achieve that, you're going to have to do 
> > something that condenses the input document before transformation.
> 
> What would you say was a reasonable target? I expect it will 
> be dependent on many factors.

I reckon a factor of 5x is usually achievable - so 750Mb. But it does
depend. Biggest variable is the proportion of the 150Mb that's taken up with
long element names - sometimes e.g. in FpML this is a huge proportion of the
total, in which case you can do much better than 5x.

Michael Kay
http://www.saxonica.com/