Courier does have a performance issue with large mailboxes. Dovecot
works well with large volumes though. If you're interested in getting
help with Dovecot on your toaster, please contact me directly.
Guidi, ColliniConsulting S.a.s. wrote:
Hello,
The cpu and ram are ok, the slowness and random occurs when all users
are in the office.
In addition I have seen that there is a mailbox that contain huge
amounts of mail.
Thanks in advance.
Erik Guidi
Support Specialist
____________________________________
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Via Cervese 1424 - 47023 Cesena (FC)
Tel. +39 0547 632314 Fax +39 0547 635019
E-mail: [email protected]
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*Da:* Phil Leinhauser [mailto:[email protected]]
*Inviato:* venerdì 19 giugno 2009 18.33
*A:* [email protected]
*Oggetto:* Re: [qmailtoaster] imap connections very slow
Hey Jake,
Looks like a really good topic for the videos. I personally would like
to see tuning hints and tips for things like IMAP, Squirrel / httpd, etc.
Currently I'm inundated by HTTPd sessions dragging the server down. I
have to reboot every couple weeks to clear it out.
Phil
> Guidi, ColliniConsulting S.a.s. wrote:
>> Hello to all,
>> To solve the problem of slow connections imap I was told to do the tune
>> of courier-imap, how do I tune to the courier-imap?
>> I searched in google but I have not found anything that gives an
>> indication.
>> Thank you
>>
>>
>> Erik Guidi
>>
>> Support Specialist
>>
>
> Tuning is somewhat of an art. You need to find where the bottleneck or
> limited resource is, then change the configuration to eliminate the
> constraint.
>
> When things run slowly, it's often the result of the application waiting
> for something. It could be waiting for a variety of things. The first
> and easiest things to check are cpu and memory. 'top' shows you much of
> what's going on in those arenas.
>
> Next I'd check the imap and imap-ssl logs for indications of a problem
> or wait of some kind.
>
> If you only experience slowness when the number of users is large, then
> it's possible that each use is using a resource that is limited, such as
> a mysql connection (for authentication). I'm not sure where you'd look
> to see what's going on there, but the mysql log would be a good place to
> start looking.
>
> How many users are connected at once when you experience this slowness?
> --
> -Eric 'shubes'
>
>
>
---------------------------------------------------------------------------------
> Qmailtoaster is sponsored by Vickers Consulting Group
> (www.vickersconsulting.com)
> Vickers Consulting Group offers Qmailtoaster support and
> installations.
> If you need professional help with your setup, contact them today!
>
---------------------------------------------------------------------------------
> Please visit qmailtoaster.com for the latest news, updates, and
> packages.
>
> To unsubscribe, e-mail:
> [email protected]
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> [email protected]
>
>
>
--
-Eric 'shubes'
---------------------------------------------------------------------------------
Qmailtoaster is sponsored by Vickers Consulting Group
(www.vickersconsulting.com)
Vickers Consulting Group offers Qmailtoaster support and installations.
If you need professional help with your setup, contact them today!
---------------------------------------------------------------------------------
Please visit qmailtoaster.com for the latest news, updates, and packages.
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
