On Mon, 23 Jun 2003, Charlie Brady wrote:

Now things seem to work, and mostly fast, but Date header seems not to be indexed by default. I have > 60second sorting by Date, with every message read. This seems new behaviour post 0.99.8.4. Is it intentional?

From example conf:

Different IMAP clients work in different ways, that's why Dovecot by default

only caches MessagePart which speeds up most operations. Whenever client

does something where caching could be used, the field is automatically marked

to be cached later. For example after FETCH BODY the BODY will be cached

for all new messages. Normally you should leave this alone, unless you know

what most of your IMAP clients are. Caching more fields than needed makes

the index files larger and generate useless I/O.

It seems that this cache optimization which applies to FETCH is not applied to SORT. The client said:

000c sort (DATE) US-ASCII ALL 1:10912

and all message files are read.

--

Charlie