speed question

Hello,

I'm using sisc in my project to replace java gui code with scheme one.
And I noticed that application startup time had increased significantly.
I've written a simple benchmark (attached) to compare speed of SISC and
mzScheme interpreters. mzScheme appeared to be ten times faster than
SISC. I've also tested Kawa and SISC interpreters that are build in
SchemeScript. Benchmark results are presented below:


PLT Scheme 301 :
loading files...
timer: (load sxpathlib.scm) 70.0 ms
timer: (load sxpath-ext.scm) 146.0 ms
timer: (load xpath-parser.scm) 400.0 ms
timer: (load sxpath.scm) 283.0 ms
timer: (load txpath.scm) 208.0 ms
done!

SISC 1.16.5 (J2RE 1.5.0_01-b08) :
loading files...
timer: (load sxpathlib.scm) 838 ms
timer: (load sxpath-ext.scm) 1832 ms
timer: (load xpath-parser.scm) 3632 ms
timer: (load sxpath.scm) 549 ms
timer: (load txpath.scm) 2486 ms
done!

SchemeScript interpreters:
SISC (1.13.6)
loading files...
timer: (load sxpathlib.scm) 899 ms
timer: (load sxpath-ext.scm) 1750 ms
timer: (load xpath-parser.scm) 3437 ms
timer: (load sxpath.scm) 539 ms
timer: (load txpath.scm) 2426 ms
done!

KAWA
loading files...
timer: (load /home/nikita/temp/scheme/sxpathlib.scm) 194 ms
timer: (load /home/nikita/temp/scheme/sxpath-ext.scm) 318 ms
timer: (load /home/nikita/temp/scheme/xpath-parser.scm) 480 ms
timer: (load /home/nikita/temp/scheme/sxpath.scm) 82 ms
timer: (load /home/nikita/temp/scheme/txpath.scm) 440 ms
done!

I can't imagine why the difference between mzScheme and SISC is so big.
Kawa is also 4-6 times faster. Is that possible to somehow speed up file
loading in SISC?

Best regards,
Nikita

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