Re: slow nnimap moves due do many SELECTs

[Ted Zlatanov <tzz@lifelogs.com>]

On Wed, 22 Sep 2010 13:09:39 -0400 Michael Welsh Duggan <md5i@md5i.com> wrote: 

MWD> Lars Magne Ingebrigtsen <larsi@gnus.org> writes:
>> Ted Zlatanov <tzz@lifelogs.com> writes:
>> 
>>> Moving N articles results in:
>>> 
>>> 09:00:37 190 SELECT "INBOX"
...
>>> 09:00:37 195 SELECT "INBOX.ding"

>> Hm.  Well, the thing is that we need to select the group we moved to to
>> find out what the article number we got was.  Because Gnus needs that to
>> copy over the marks and other stuff.  So copying an article from group A
>> to group B involves at least to SELECTs.

MWD> You may not need to copy over the marks.  The spec says: "The flags and
MWD> internal date of the message(s) SHOULD be preserved, and the Recent flag
MWD> SHOULD be set, in the copy."  If the SHOULD is bothersome, it would be
MWD> nice to have a per-server variable we can set if we know that that
MWD> server handles this correctly. 

I hope that's well-supported, because SELECTs are very expensive on at
least Courier IMAP and probably most other IMAP servers.

Ted