initial slowness

[Andrew Morgan]

On Tue, 24 Feb 2009, Iv Ray wrote:

> Hello everyone,
>
> A few weeks ago I wrote to the list about slow Cyrus IMAP, and I
> received a couple of answers, however I am still struggling.
>
> What I noticed now is that even the command line login -
>
> cyradm -u cyrus localhost
>
> takes about 25 seconds, after the password is entered, to show the
> localhost> prompt (and the server load is close to zero).
>
> I did reconstruct several times and once quota -f, but this does not
> seem to help.
>
> I read about rebuilding of the mailboxes.db - but I am a bit scared.
>
> The server is running FreeBSD 6.x with latest Cyrus IMAP and has,
> usually, load close to zero.
>
> I also noticed that the add/edit mailbox operations done with a php
> script take very long (perhaps around 25 seconds, as well).
>
> Some hints what might be wrong and/or steps to clean up/improve the
> situation will be greatly appreciated!

Are all operations slow, or only authentication?

Your best tool for testing is imtest.  You can issue raw IMAP commands and 
see how long they take.

 	Andy