[xml] libxml2 very slow on big data dump

[Alexandre Macard <amacard arkeia com>]

HI,

I try dump a node from a big xml (near 7mo), and the libxml2 is very
slow to respond.

I tried to trace the problem and it seems to take all it's time into the
function: xmlOutputBufferWriteEscape.
I do not need to escape data because I use a base64 encoding.

How can I get rid of passing inside this function ?

Thanks a lot.

Regards.
Alexandre Macard.