Excellent suggestions, thanks Mark. You're correct that I've been
working mainly from UID's, so I'll see if I can move away from that a
bit to try and improve the situation. And yeah, Exchange2K3 doesn't
seem to support SORT :-(.
Andrew
(and apologies for spamming the mailer with multiple copies of the
original post)
Mark Crispin wrote:
Hello -
The c-client mailing list has been renamed to the imap-uw mailing list.
The fundamental problem is that your server does not implement the
IMAP SORT extension. You would not have this problem with a server
that offers SORT.
Next, what options are you giving to mail_sort()? If you are setting
SE_UID, then the code does not (can not) do any prefetching. This is
because c-client's cache is completely implemented by message sequence
number, not by UID. In general, options such as SE_UID and FT_UID
should be avoided, especially when doing multiple message operations.
Instead, get the sequence numbers, and then afterwards translate them
to UIDs (if that is what you want) via mail_uid(). This may sound
backwards to someone who is thinking in terms of UIDs, but trust me,
c-client cache will be happier and will reward you for your cooperation.
You may find the use of sequence numbers to be beneficial in other
ways as well; use UIDs just for synchronization and do everything else
with sequence numbers. c-client will reward you for that as well.
-- Mark --
http://staff.washington.edu/mrc
Science does not emerge from voting, party politics, or public debate.
Si vis pacem, para bellum.
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