[RCD] [PATCH] Threaded messagelist view patch rev5 (against r3022)

Chris January chris at atomice.net
Wed Oct 7 13:40:23 CEST 2009

On Wed, 07 Oct 2009 13:26:43 +0200, "A.L.E.C" <alec at alec.pl> wrote:
> Chris January wrote:
>>>> Sorting by anything but the default order (i.e. index_sort=true) is
>>>> incredibly slow with 30,000 or so messages.
>>> THREAD command returns messages (threads) sorted by date, it's not 
>>> possible to speed this up. Index_sort option will not help and we have

>>> two possibilities:
>>> - re-sort by root message index if index_sort=true,
>>> - forget about index_sort option when using threads
>> This is why there is a 'default' sort order in the threading patch. The
>> THREAD command returns, as you say, messages sorted by date. Roundcube
>> then
>> sorts them again which can be very slow with lots of messages. So the
>> threading patch introduces the 'default' sort order, which could be
>> better
>> called the 'unsorted' sort order, i.e. the messages aren't sorted at
>> but kept in the same order they are returned by the server.
> But re-sorting by message index shouldn't be very slow, since we don't 
> fetch any data from IMAP server. I still force to not use this 'default'

> stuff.

Sorting ~30,000 threads with ~60,000 messages in them takes in the order
of minutes on my machine. This is unacceptably slow, that's why I added the
'default' option.


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