23 Oct
2007
23 Oct
'07
11:45 a.m.
Malcolm Wallace wrote:
HaXml now uses the polyparse library, and you can choose whether you want well-formedness checking with the original strict parser, or lazy space-efficient on-demand parsing. Initial performance results show that parsing XML lazily is always better than 2x as fast, and 1/2x peak memory usage of strict parsing.
Hey, that's great news!
In some usage patterns, it can reduce the cost of processing from linear in the size of the document, to a constant (the distance into the document to find a particular element).
Oh oh - does that mean that Ketil's original case (an element containing a large quantity of CDATA) could still be a problem? Parsing the CDATA ought to be possible to delay if needed. Thanks, Yitz