[xml] xmlNewChild(...) slow in version 2.6.16-7 (debian sarge)

[Dominik Raddatz <dominik raddatz neomo de>]

Hi,

the following statement seems somewhat slow:

xmlNodePtr myNode;
xmlChar *myText;
...
xmlNewChild(myNode, NULL, BAD_CAST "description", BAD_CAST myText);

takes about 25 ms when myText is 50kB; profiling suggests it wastes much time 
using "xmlStrlen()".

the comparable statements

xmlNodePtr newNode=xmlNewChild(myNode, NULL, BAD_CAST "description", NULL);
xmlNodeAddContent(newNode, BAD_CAST myText);

are much faster, using less than 1 ms with the same text.

I haven't found any hint about whether this was a known problem and has been 
fixed in later versions.

Thanks
Dominik