Re: IMAP Performance

[prj@po.cwru.edu (Paul Jarc)]

Karl Kleinpaste <karl@charcoal.com> writes:
> Russ Allbery <rra@stanford.edu> writes:
> > Moving and copying messages is rather slow in nnml too.  I'd love to see
> > that fixed.  It really shouldn't take hours, or even minutes, to move a
> > few thousand messages between nnml groups if one can use rename() in the
> > underlying file system

nnmaildir uses add-name-to-file and delete-file.  Well, sometimes -
nnmaildir-request-move-article binds nnmaildir--file to the article
filename in a (let), puts the message in a buffer, and proceeds to
eval the foorm passed by Gnus.  nnmaildir-request-accept-article then
checks nnmaildir--file and tries add-name-to-file before falling back
to copying the buffer.  But I think sometimes Gnus arranges things so
that -request-accept-article isn't called until after
-request-move-article returns, so nnmaildir--file no longer holds the
filename.  This ought to be solved by fixing the backend interface, I
think.

> Messages can't simply be renamed because e.g. Xref headers must be rebuilt.

nnmaildir generates Xrefs on the fly, so this isn't a problem.  At
present, the generates Xrefs are fairly useless, but is fixable.


paul