Updating /seen from concurrent sessions

[Luca Olivetti]

Lawrence Greenfield wrote:

>    Try using skiplist for the seen.db
>    It doesn't really solve the problem but it masks it well enough.
> 
> From my understanding, changing to skiplist really shouldn't change
> the visible behavior at all. But I've been wrong before.
> 
> It would be possible to flush the seen state more often; it's just a
> question of how often and when should other imapds look for it. I've
> never actually seen this problem happen whenever I've fooled around
> with OE so I've never looked at the code to figure out what to do.

I don't use OE but I experienced the same (or similar) problem with 
mozilla: since it uses many concurrent connections to the server, seen 
messages came back as unseen various times, and it was very annoying.
Switching to skiplist almost solves the problem (at least it did for 
me): since I switched to skiplist I had seen messages come back as 
unseen only 2 or 3 times.
At the times I tried various things (see 
http://asg.web.cmu.edu/archive/message.php?mailbox=archive.info-cyrus&msg=14304) 
but the definitive solution was to use skiplist. Maybe it's linux specific.

Bye
-- 
Luca Olivetti
Wetron Automatización S.A. http://www.wetron.es/
Tel. +34 93 5883004      Fax +34 93 5883007