On Sun, 2008-08-17 at 12:33 -0700, Jack Stewart wrote: > Hi, > > Is there an IMAP performance difference using Maildir between using > version 3 and version 1 of the dovecot-uidlist (either dovecot 1.0.7 or > 1.1.2)?
There are two differences in version 3: 1. It's extensible, so it allows some extra metadata fields. If the file name doesn't already contain size/vsize then it might write the sizes to uidlist to optimize some usage patterns (pop3 mainly). 2. New data may be appended to dovecot-uidlist instead of the entire file being recreated all the time. This will surely make the performance better. In any case Dovecot v1.0 will always write only v1 files while Dovecot v1.1 will always write only v3 files, so you won't be able to choose between them.
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