Is there some information about benchmarking about XSL processor

[Kyong-ha Lee <bart@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>]

I've found some information about existing XSL processor as follows:

 saxon, koala XSL processor, XSL:P/ ,  xt,, lotusXSL processor, and
Datachannel-MS java Parser( supporting XSL templates)

Is there any Information about benchmarking of XSL processors?
When I try to making new html documents with some sample xml and xsl
documents
There exists some ambiguous points in processing templates.
for examples, <xsl:value-of  /> is well transformed in SAXON  but not in
Koala XSL. In Koala XSL, It transform define xsl:value-of as
xsl:value-of  expr=""

If you have some benckmark or any comparsons about XSL processors, let
me know pleases

thanks in advance

begin:vcard 
n:Lee;Kyong-ha
tel;cell:019-482-7449
x-mozilla-html:FALSE
org:Database Lab.;Dep't of Computer Engineering Chungnam Univ. 
adr:;;220 Gung-dong yusong-Ku, Taejon, Republic of Korea.;;;305-764;
version:2.1
email;internet:bart@xxxxxxxxxxxxxxxxxxxxx
title:Kyong-ha Lee(Bart)
fn:Kyong-ha Lee
end:vcard