Re: dired too SLOW

[Richard Stallman]

    In some cases (the Solaris 2.6 automounter comes to mind), the problem
    can be worked around by doing the stat (or ls) before the statvfs (or df).
    It might be wise to modify Emacs to do that.

Emacs does do the ls first.

      Perhaps the Emacs PROBLEMS section can suggest
    that users use GNU fileutils df on older SVR4 and SunOS 4.x hosts, to
    avoid that problem on those hosts.

If that is what's happening, your proposal seems reasonable.