Simon Josefsson <jas@extundo.com> writes:

> Profiling results of
> `nnfolder-request-update-info' and `nnfolder-request-set-mark' for
> largish groups would be interesting.

Ok, attached are the results from a enter and the results from an
exit, done as you suggested.

One oddity:  The first time I hit SPC after elp-reset-all, I get

  Retrieving newsgroup: nnfolder:geg...
  Key sequence A P uses invalid prefix characters

The second time I hit SPC, Gnus enters the group without a problem.
That's why the results show two calls to some functions.  So take the
elapsed time, not the average time, for these functions.

If I do elp-results after the error message, then when I hit SPC
a second time, emacs dies!  Completely reproducible.