Thanks for the answer!
At least I'm not alone ;-)
----- Message d'origine -----
De : "Holger Flörke" <[EMAIL PROTECTED]>
À : <xalan-c-users@xml.apache.org>
Envoyé : mardi 30 août 2005 11:11
Objet : Re: xalan-c 1.9 pezrformance issue?
I also have noticed performance degration when using xsl:key for Xalan 1.9.
But I had not the time to analyze the problem deeper for commiting this as
an open issue.
HolgeR
Yves Monier schrieb:
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
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