bug#3252: 23.0.93; extremely slow to open file on windows network drive

[Chris Withers]

Eli Zaretskii wrote:
> > > > > Finally, does "C-x d" of the same directory take the same time as
> > > > > drag-n-drop?
> > > > No, the one file I tried took over a minute before I got bored of counting.
> > > Sorry, I don't understand: is "C-x d" faster or slower than
> > > drag-n-drop?
> > Slower.
>
> Ah, now I get it: you need to wait 11 seconds for visiting
> _a_single_file_ in that directory, is that right?

No, the 11 seconds is for dragging and dropping a single file from 
Windows Explorer into Emacs.

For a single file in that directory using C-x d, I waited for over a 
minute and then gave up counting. The file did eventually open some time 
later...

> Try in 'emacs -Q".  After invoking "emacs -Q", manually set
> `vc-handled-backends' to nil, and then drag-n-drop that file.
>
> And trying this in "emacs -Q" is a good idea anyway, since the source
> of the slowdown may be in your ~/.emacs.

My .emacs is pretty sparse nowadays ;-)

What does emacs -Q mean? How do I do this on Windows? runemacs.exe -Q in 
a DOS box or something else?

cheers,

Chris

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