Re: Fwd: Serious performace problems on Windows XP with new(!) GNU Emacs v22 (both patched and unpatched EmacsW32 were tried)

[Peter Tury]

2006/11/1, martin rudalics <address@hidden>:
> OK.  Attached find my latest version of whitespace.el.  Please try it
> for all five sorts of whitespace bemoaned by that program and whether
> the cleanup routines fix it in the expected manner.

Interesting things again! I tried this latest whitespace.el and found
the followings:

1. whitespace-buffer on slowtst.el takes ~9 seconds (=the same result
what I got with your previous fix) IF point is at the beginning of the
buffer. If point is somewhere down (e.g. at (point-max))
whitespace-buffer finishes in ~2 seconds!?

2. newest whitespace-buffer on my "original most problematic" file
needs ~ 55 seconds (before fix this was ~3(?) minutes and unexpected
delay occured also at file opening and at file closing
"automatically"; now file opening and closing is normal fast
(=immediate)) IF point is at top of the buffer. If point is at about
the middle, whitespace-buffer needs ~25 seconds to finish. If point is
at (point-max), whitespace-buffer finishes in 3 seconds!

So if you could find the reason of this strange difference related to
(point), then there would be no performace problem with whitespace.

Thanks again,
P