> forgot to mention, it happens also when using the empty.html freshly
> downloaded. (that's as far as my debugging talents go, alas..)

When using an empty.html and the built-in importer, the only overhead
that could be caused by loading a remote document would be due to
server response time, file size and transfer rate, because the
plugins, scripts, etc in that document are simply being read in as
*tiddler data* and are not invoked in any way.

Of course, when you directly view the document on-line, the same
server-induced transmission delays can still be present... *and* the
document's plugins, script, etc. *are* also invoked... so the startup
time should, in theory, be at least the same as, if not longer than,
the overhead when importing.

One technical difference between the two methods that might account
for *some* difference in the response time: the importer uses the
browser's XMLHttpRequest() function to fetch the file via javascript,
while viewing the hosted document directly by entering a URL uses the
browser's regular http: protocol handler.  Thus, it's possible that
the XMLHttpRequest() handling has other processing overhead that isn't
part of the direct URL handling.

In any case, while I don't doubt your observations, based on the
symptoms you described it seems very unlikely that any code
TiddlyTools.com could be creating the delays you are reporting.
Nonetheless, I will try some timing experiments to see if I can spot a
pattern and deduce a possible cause.

-e

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