[xslt] libxslt/xml2 profiling

[ben <nicolas marsgui libertysurf fr>]

Hi,
First, I've seen a previous mail about the libxslt/xml2 performance, and
for me I find fast enough (at least quite faster than the other java
XSLTs).

However I've a big file on which I run xsltproc, and the transformation
time is quite important (3 or 4 mn). My questions are:

* is there a way to know where time is spent?
* can it come from the stylesheets I use (optimization tips are welcome
;-)?
* can someone give advice to go faster?

Thanks!

BG