RE: slow IMAP connection

Sorry I haven't been able to reply as our system has been very slow
with lots of calls going on right now.

I'll take a look at the size of the INBOXES to see if that's the issue.
What would be the tool/process for converting from mbx to mix?

Thanks again for all the replies,
Troy


-----Original Message-----
From: [email protected] on behalf of Mark Crispin
Sent: Tue 3/16/2010 12:34 PM
To: Bob Atkins
Cc: Mabry Tyson; UW IMAP Software Interest List
Subject: Re: [Imap-uw] slow IMAP connection
 
Although I agree with Bob's conclusion (use mix format), I think that it
overstates the issue to say that "mbx format is only marginally better"
than mbox".

mbx is a major jump up from mbox, and is handled much better than mbox.
mbx scaled very well for the demands of 1996 when it was designed; it's
just that we no longer live in that world.

mix was designed in 2006 to be as much of a jump from mbx as mbx is a jump
from mbox.  mix is the ONLY choice for a mailbox >2GB in size; mbx and
mbox will not work at all.  Although mbx will work with a mailbox of
40,000+ message, it would be painful; and mbox would be unusable.

I think that a way of looking at it is that if mbox is a "1", then mbx is
a "10" and mix is a "100".

On Tue, 16 Mar 2010, Bob Atkins wrote:
> The only way to fix the slow I/O problem, especially with large mail
> boxes is to convert to mix format. mbx format is only marginally better
> than mbox from a performance standpoint. This is from my personal
> experience of having mail boxes with 40,000+ messages and >2GB in size.
> Today's users have no idea how much space their mail is consuming, nor
> would they care if they did. Our only option as administrators is to
> implement the fastest and most scalable solution that we can. We
> converted our systems to mix format about a year ago and oh what a
> different it made. Much happier users and even happier admins  ;-)

-- Mark --

http://panda.com/mrc
Democracy is two wolves and a sheep deciding what to eat for lunch.
Liberty is a well-armed sheep contesting the vote.
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