On Thu, 5 May 2011, Timo Sirainen wrote:
On 5.5.2011, at 10.04, Becker, Ronny wrote:
I did some debugging and found that a lsub "" "*" that is used by Thunderbird
takes > 5 minutes.
Something's very wrong. I just tested with 1000 folders in a
subscriptions file and it lists it in less than a second.
Interesting. I just converted a system from Courier IMAP to Dovecot, and
found a massive performance increase. My own personal account has 655
subscribed folders containing about 1.3 million messages. An LSUB "" "*"
command takes of the order of about 0.1 second (the IMAP server has SATA
disks and an Xeon E5345's at 2.33 GHz). Using alpine as client, a full
scan of all messages to find unread messages (";puz") takes about 10
seconds - with Courier, this takes over a minute. I don't know of a way to
do the same test in tbird.
Steve
