|
Hi everybody,
I recently switched from xalan-c 1.4 (with xerces-c 2.1.0) to
xalanc-c 1.9 (xerces-c 2.6.0) for compatibility reasons with some of our
supported linux platforms.
No more compilation/link issues now with version 1.9 but it
appears that this version is MUCH slower than 1.4, at least with the xml &
xsl files I deal with...
I also noticed which sounds like a new bug: the xsl:output
omit-xml-declaration attribute seems to be ignored. My xsl contains it
(value="yes") and xalan-c 1.4 transformation did not generate the xml header, as
expected, whereas version 1.9 still generates the header... Anyway, I can leave this that.
The performance issue is much more problematic.
I did some tests with different sizes for my xml file, using
Xalan.exe from the command line:
92 kb xml: approx. 1.5s for xalan-c 1.9 (approx. 2s for
version 1.4)
491kb: 10s (3s for v1.4)
937kb: 21s (4s)
1128kb: 33s (4s)
1505kb: 1m25s (4s)
...
...
14655kb: 1h27m (22s) !!!
The xsl uses two xsl:key for Muenchian grouping. Nothing
especially tricky, at least for other processors like xalan-c 1.4 and
saxon...
I had a look to the xalan-c mailing list archive and open bugs
but found nothing on performance aspects...
I attached my xsl and a subset of the xml file I
use.
Thanks in advance for any hint!
Yves
|
dict2xelda.xsl
Description: Binary data
small_dict.xml
Description: Binary data
